Extron electronic Network Card RGB 320 User Manual

RGB 320 Switching Interface  
Six Input, Two Output System  
68-341-01  
Printed in the USA  
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Contents  
Contents  
Legend of Icons .................................................................................................................ii  
Revision Information ..........................................................................................................ii  
Chapter One • Introduction to Switching Interface  
What is a Switching Interface? .................................................................................................... 1-1  
Function ......................................................................................................................... 1-1  
Controlling the RGB 320 Interface.................................................................................. 1-2  
Features......................................................................................................................... 1-3  
Specifications ................................................................................................................. 1-3  
RGB 322, RGB 324, RGB 326 and RGB 340 Input Buffers ........................................................ 1-5  
Chapter One Illustrations  
Figure 1-1. Example of an RGB 320 System Using Four Possible Buffer Types Installed in a Conference  
Room............................................................................................................................................................ 1-1  
Figure 1-2. The RGB 322 and RGB 324 Can Be Installed in Walls.............................................................. 1-2  
Chapter Two Rear Panel Connections  
Connecting the RGB 320 Switching Interface ............................................................................. 2-1  
Rear Panel Connectors .................................................................................................. 2-2  
Audio Input Connections ................................................................................................ 2-3  
Audio Output Connections ............................................................................................. 2-3  
Choosing Cables for Remote Inputs ........................................................................................... 2-4  
RGB 322/324/326/340 Input Buffer Connections ........................................................... 2-4  
Composite Cables.......................................................................................................... 2-4  
Buffer Input Cables ........................................................................................................ 2-5  
Chapter Two Illustrations  
Figure 2-1. The RGB 320 as a Computer Video Switching Interface to a Line-quadrupling System ........... 2-1  
Figure 2-2. The Rear Panel Has Connectors for Six Inputs and Two Outputs ............................................. 2-2  
Figure 2-3. Audio/Comm/Power Input Connectors with Captive Screws ..................................................... 2-3  
Figure 2-4. Examples of Round Audio Cable Connectors ........................................................................... 2-3  
Figure 2-5a. Wiring the Input Audio Connectors Using RGB 324/326/340 Buffers...................................... 2-3  
Figure 2-5b. Wiring the Input Audio Connectors Not Using RGB 324/326 Buffers ...................................... 2-3  
Figure 2-6a. Three Methods of Wiring Audio Output.................................................................................... 2-3  
Figure 2-6b. Both Halves of the Output Connector Are Configured the Same ............................................ 2-3  
Figure 2-7. Installation Cables Connected to Inputs 1, 3 and 5 ................................................................... 2-4  
Figure 2-8. One Installation Cable Can Be Used for Each Input and Each Output ..................................... 2-4  
Figure 2-9a. Installation Cable Wired for the RGB 320 ................................................................................ 2-5  
Figure 2-9b. Installation Cable Wired for the RGB 322/324/326/340 (RGB 322 Has No Audio) ................. 2-5  
Chapter Three Operating the RGB 320 Panel  
Controlling the RGB 320 Interface .............................................................................................. 3-1  
Memory Functions (store/recall/clear) ............................................................................ 3-1  
LCD Display ................................................................................................................... 3-1  
Front Panel Controls ...................................................................................................... 3-2  
Using the RGB 320 Front Panel Buttons ..................................................................................... 3-3  
Making Input Adjustments from the RGB 320 Front Panel .......................................................... 3-4  
Four Video and Audio Adjustments ................................................................................ 3-4  
Diagnostic LEDs ............................................................................................................ 3-5  
Rear Panel Switches................................................................................................................... 3-5  
Peaking Switch .............................................................................................................. 3-5  
DIP Switches: Sync Options and Serration Pulses......................................................... 3-5  
Chapter Three Illustrations  
Figure 3-1. The RGB 320 Front Panel.......................................................................................................... 3-1  
Figure 3-2. The Front Panel LCD Display..................................................................................................... 3-2  
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Figure 3-3. RGB 322/324/326/340 Differences ............................................................................................ 3-2  
Figure 3-4. RGB 320 Front Panel A/V Mode and Input Selection Buttons................................................... 3-3  
Figure 3-5. Select the A/V Mode by Pressing the Button on the RGB 320 Front Panel.............................. 3-3  
Figure 3-6. Select the Desired Input by Pressing Its Button ........................................................................ 3-3  
Figure 3-7. Example of the Input Frequencies Being Displayed on the Default Screen .............................. 3-4  
Figure 3-8. Turn the Appropriate Knob to Adjust an Input Function; the LCD Displays the Action .............. 3-4  
Figure 3-9. The Appropriate Display Will Appear on the LCD Screen ......................................................... 3-4  
Figure 3-10. Six Diagnostic LEDs on the Front Panel .................................................................................. 3-5  
Figure 3-11. Peaking Switch & DIP Switches Are Located in the Lower-right Section of the Rear Panel ... 3-5  
Chapter Four Using Windows® Control Program  
Installing Windows Control Software ........................................................................................... 4-1  
Normal Windows Control Panel...................................................................................... 4-2  
Executive Mode Panel.................................................................................................... 4-2  
RGB 320 Help................................................................................................................ 4-3  
Chapter Four Illustrations  
Figure 4-1. Connect the PC to the RGB 320 Switching Interface ................................................................ 4-1  
Figure 4-2. Extrons Program Group ............................................................................................................ 4-1  
Figure 4-3. Control Panel Functions............................................................................................................. 4-2  
Figure 4-4. Executive Mode Uses a Limited Panel....................................................................................... 4-2  
Figure 4-5. RGB 320 Help............................................................................................................................ 4-3  
Appendix A Programming the RGB 320  
Remote Control Port (RS-232 and Contact Closure) ..................................................................A-1  
Contact Closure Operation.............................................................................................A-1  
Host-to-RGB 320 Instructions .....................................................................................................A-1  
Command/ResponseTable ............................................................................................A-2  
RGB 320-Initiated Messages .........................................................................................A-3  
Appendix A Illustrations  
Figure A-1. The Serial Port Connector Wired for Both RS-232 and Contact Closure .................................. A-1  
Figure A-2. Example of a Touch Panel Connected to the RS-232 Port........................................................ A-1  
Appendix B Reference Material and Glossary of terms  
Related Parts ..............................................................................................................................B-1  
Glossary of Terms .......................................................................................................................B-2  
Index ...........................................................................................................................................B-7  
Legend of Icons  
The following icons may be used in this manual:  
_________ Important information an action or a step that must be done before proceeding.  
_________ A Warning possible dangerous voltage present.  
_________ A Warning possible damage could occur.  
________ A Note, a Hint, or a Tip that may be helpful.  
________ Additional information may be referenced in another section or document.  
68-341-01 D  
Printed in the USA  
02 00  
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RGB 320 Switching Interface System Users Manual Extron  
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RGB 320 Switching Interface System  
Users Manual  
Chapter One  
Introduction to Switching Interface  
What is a Switching Interface?  
Features  
Specifications  
1
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Chapter 1 Introduction to the RGB 320 Switching Interface System  
What is a Switching Interface?  
Extrons RGB 320 combines an interface and a switcher with six inputs and two  
outputs. It was designed as a system solution for installation environments such  
as conference or training rooms and command/control centers. The six inputs can  
use RGsB, RsGsBs, RGBS, RGBHV and line level audio. There are two buffered  
outputs. One, for example, may go to a projector (the main presentation display)  
and the other to a viewing monitor located near a podium.  
Figure 1-1. Example of an RGB 320 System Using Four Possible Buffer Types in a Conference Room  
The RGB 320, together with the RGB 322, RGB 324, RGB 326 and RGB 340  
input buffers, acts as a switching interface system, with up to six remote (or local)  
buffer modules as inputs. These buffers can be installed in various convenient  
places in a room, such as in a wall, or under a podium or a table. They transfer  
the individual computer-video and audio signals (RGB 322 does not include  
audio) to the RGB 320, where they are switched to a display device, a system  
switcher or a line doubler, etc. The RGB 320 can be mounted in a rack with other  
A/V components.  
Figure 1-1 shows an example of a custom A/V installation in a conference room.  
An RGB 320 is mounted in the rack outside the room. Inside the room, an  
RGB 324 has been installed in the wall (top right), an RGB 326 in the left wall,  
and an RGB 322 is mounted in the right wall, next to the document camera. An  
RGB 340, mounted in the podium, accommodates the presenters laptop  
computer.  
The RGB 322 buffer has Horizontal Shift adjustment and Show Me. The RGB 326  
has video and audio inputs, a termination switch and an LED that indicates when  
this buffer is the active input.  
Function  
While the interface functions are processed within the RGB 320, virtual  
interfacingcan be done from the RGB 322, RGB 324 or RGB 340 buffers. The  
Show Mebutton on these buffers requests that its signal(s) be switched to the  
RGB 320 output device. It can also initiate communication with the RGB 320 to  
allow the following adjustments to be made from the panel:  
1-1  
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Chapter 1 Introduction to the RGB 320 Switching Interface System  
horizontal shift (from RGB 322, RGB 324 & RGB 340)  
vertical shift (from RGB 324 & RGB 340)  
video level (from RGB 324 & RGB 340)  
audio level (from RGB 324 & RGB 340)  
The RGB 320 saves these adjustments in a memory associated with each input.  
The RGB 320 has 15 memory blocks for each of the six inputs. The memory  
blocks store the picture controls needed for an application or installation. When an  
input buffer is selected, with a computer connected, the RGB 320 searches for a  
match for that scan rate and automatically recalls the appropriate input settings  
for that device. This eliminates having to recalibrate the settings each time a  
specific computer is selected. Ten of the most popular computer scan rates are  
permanently programmed into the RGB 320s memory so programming may not  
be necessary.  
Figure 1-2. The RGB 322 and RGB 324 Can Be Installed in Walls  
The RGB 320 has features that help to maintain the original signal integrity and  
enhance overall system performance. A video level control is provided to  
compensate for weak signal source or signal loss due to cables or other system  
components. For example, if the signal from input #1 is weak, this control can  
boost it; if the signal from input #3 is strong, it can be attenuated. Each setting is  
stored for that input.  
The RGB 320 also provides LCD sync processing that ensures a stable image for  
LCD and DLP presentation devices.  
Controlling the RGB 320 Interface  
The RGB 320 can be controlled from front panel control buttons, from the  
RGB 322, RGB 324 and RGB 340 buffers with virtual interfacingor with Extrons  
Windows® Control Program software. An RS-232 serial port allows control by a  
third party control system. Extrons software allows control of the RGB 320 from a  
remote PC with a graphic interface.  
The six inputs to the RGB 320 can originate from remote input buffers or from a  
(local) device in the rack, such as another switcher, a line doubler, a dedicated  
audio system or a computer interface. The RGB 322, 324, 326 or 340 input  
buffers may be located in various places around a room. The RGB 320 switches  
the signals to a display device, a system switcher or a line doubler, etc.  
Extron Users Manual RGB 320 Switching Interface System  
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Chapter 1 Introduction to the RGB 320 Switching Interface System  
Features  
High bandwidth The RGB 320 provides a 220 MHz bandwidth for effective  
transmission of high resolution computer video and audio signals.  
Central controlThe RGB 320 interfaces and switches input sources from buffers  
throughout the room to two displays for professional presentations.  
RS-232 control Allows for third party control system (such as AMX® or  
Crestron®) integration via the RS-232 serial port.  
Universal compatibility The RGB 320 accepts RGsB, RsGsBs, RGBS and  
RGBHV video signals, ensuring compatibility with all types of computer inputs.  
Rack mountable The RGB 320 is housed in a 17 inch wide, 2U high metal  
enclosure, with a 19-inch rack-mount face and mounting hardware.  
Digital Sync processing Provides image stability for all CRT, LCD and DLP  
projection devices.  
System diagnostics Operations are monitored by LEDs on the front panel.  
Peaking The RGB 320 has peaking control to maintain the original signal  
integrity over long cable runs.  
Horizontal & vertical centering This allows position (shift) control of the image.  
Audio gain & attenuation Audio levels may be set for each input in increments of  
1 dB, from -15 dB to +9 dB.  
Video levels The RGB 320 provides adjustment for all RGB video levels via the  
front panel buttons or remote PC with RS-232 control.  
Memory blocks Ensures that each computers settings are saved, storing  
horizontal & vertical centering, audio and video levels.  
Audio follow & breakaway The RGB 320 allows audio to be switched with video  
(follow) or switched separately from video (breakaway).  
Specifications  
Video input  
Number/type _ 6 analog RGBHV, RGBS, RGsB, RsGsBs  
Connector _ 5 BNC female x 6  
Nominal level(s) _ Analog 0.3V to 1.45V p-p  
Impedance _ 75 ohms  
Horizontal frequency _ 15 kHz to 150 kHz (optimum 15 kHz to 62 kHz)  
Vertical frequency _ 30 Hz to 170 Hz  
Return loss _ -30 dB @ 5 MHz  
Video throughput  
Video outputs  
Routing _ 6 X 1, 2 distributed outputs  
Gain _ 0.5V to 1.45V p-p  
Peaking 0%, 50%, 100% (switch-selectable)  
Bandwidth _ 220 MHz (-3dB)  
Number/type/format _ 2 analog RGBHV, RGBS, RGsB  
Connectors _ 2 x 6 BNC female  
Nominal level _ 0.5V to 1.45V p-p  
Impedance _ 75 ohms  
Return loss _ -30 dB @ 5 MHz  
Sync  
Input type _ Autodetect RGBHV, RGBS, RGsB, RsGsBs  
Output type _ RGBHV at all times, RGBS at all times,  
RGsB switch-selectable  
Input level _ 2.0V to 5.5V p-p with 0.2VDC offset max.  
Output level _ 4.0V to 5.0V p-p  
Input impedance _ 10 kohms  
Output impedance _ 75 ohms  
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Chapter 1 Introduction to the RGB 320 Switching Interface System  
Sync  
Max. propagation delay _ 88 nS  
Max. rise/fall time _ 3.2 nS  
(continued)  
Polarity _ Positive, negative  
Audio input  
Number/type _ 6 stereo, balanced/unbalanced  
Connectors _ 6 3.5 mm captive screw terminal, 5 conductor  
Impedance _ Balanced  
25 kohms, DC coupled  
Unbalanced 50 kohms, DC coupled  
Maximum level _ +19.5dBu, balanced or unbalanced  
Input gain adjustment _ 15.0dB to +9.0dB, adjustable per input  
Routing _ 6 X 1, 2 distributed outputs  
Audio throughput  
Gain _ Unbalanced 0dB, balanced +6dB  
Frequency response _ 0.05dB 20 Hz to 20 kHz  
THD + Noise _ 0.03% @1 kHz, 0.3% @ 20 kHz  
+15dBu input, +21dBu output  
Balanced input and output  
S/N _ >90dB, output 21dBu, balanced  
Adjacent input crosstalk _ >65dB @ 20 kHz, >80dB @1 kHz,  
>80dB below 60 kHz  
Stereo channel separation _ >80dB @1 kHz, >60dB @ 20 kHz  
CMRR _ >75dB 20 Hz to 20 kHz  
Audio output  
Number/type _ 2 stereo (2 channel), balanced/unbalanced  
Connectors _ 2 3.5 mm captive screw terminals, 5 conductor  
Impedance _ Unbalanced 50 ohms, balanced 100 ohms  
Gain error _ 0.1dB channel to channel  
Drive (HI-Z) _ >+21.0dBu, balanced at stated %THD+N  
Drive (600 ohm) _ > +15.0dBu, balanced at stated %THD+N  
Control/Remote —  
Serial control port _ RS-232 9-pin female D connector  
Pin configurations _ 2 = TX, 3 = RX, 5 = GND  
switching interface  
Baud rate and protocol _ 9600, 8-bit, 1 stop bit, no parity  
Contact closure _ 9-pin female D connector  
Pin configurations _ 1 = input 1, 4 = input 2, 5 = GND, 6 = input 3,  
7 = input 4, 8 = input 5, 9 = input 6  
Program control _ Extrons control program for Windows®  
Extrons Simple Instruction Set- SIS™  
Power _ 100VAC to 240VAC, 50/60 Hz, 20 Watts, internal,  
auto-switchable  
General  
Temperature/humidity _ Storage -40° to +158°F (-40° to +70°C) / 10% to 90%  
Operating +32° to +122°F (0° to +50°C) / 10% to 90%  
Rack mount _ Yes  
Enclosure type _ Metal  
Enclosure dimensions _ 3.50H x 19.00W* x 9.50D  
8.89 cm H x 48.26 cm W x 24.13 cm D  
*includes attached rack ears  
Shipping weight _ 16 lbs (7.2 kg)  
DIM weight 25  
Vibration _ NSTA 1A in carton (National Safe Transit Association)  
Approvals _ UL, CE, FCC Class A  
MTBF _ 30,000 hours  
Warranty _ 2 years parts and labor  
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Chapter 1 Introduction to the RGB 320 Switching Interface System  
RGB 322, RGB 324, RGB 326 and RGB 340 Input Buffers  
The RGB 322, 324 and 326 are each mounted on a two-gang wall plate that can  
be installed in a wall, conference table, podium, etc., while the RGB 340 mounts  
under a table or shelf. Each buffer has a 9-pin input connector compatible with  
computers that output analog RGsB, RsGsBs, RGBS and RGBHV.  
________ These buffer units have their own Users Manual  
(68-338-01).  
A Show Mebutton on the RGB 322, RGB 324 and  
RGB 340 buffer units allows the user to select their  
buffer as the active source and present their output  
onto the main display via the RGB 320. This is  
called virtual interfacingcontrol of the RGB 320.  
Virtual interfacing also allows interface adjustments  
to be made from certain buffer models. Thus, users  
may interact with the main display directly from their buffer locations.  
All buffers are available in gray, and the 2-gang wall plates are also available in  
black or white face plates, so they can blend into walls, podiums, tables, etc.  
Control can be via the RGB 320 front panel buttons, RS-232 control and Extrons  
control program for Windows®.  
Virtual interfacingAllows you to make various video  
and audio adjustments that are passed to the RGB  
320, which then executes the adjustments and stores  
them in memory.  
Show Me buttonYou can remotely select your own  
buffer to become the active input source and, via the  
RGB 320, display their information on the  
presentation devices.  
Horizontal Shift (centering)This adjusts the  
horizontal position of the image on the video display.  
Remote connectionThe buffers provide remote input connection for a  
permanent A/V installation that requires more than one interface location.  
Universal compatibilityThe buffers output analog  
RGsB, RsGsBs, RGBS and RGBHV video signals,  
ensuring compatibility with all types of analog  
computer inputs.  
The RGB 324 and RGB 340 have all of the features of  
the RGB 322 as well as these:  
Show Me buttonWith the RGB 324 and RGB 340,  
the Show Me button acts not only as the buffers  
source selector, but also as the primary switch that  
allows video and audio level adjustments to be made.  
Vertical shift (centering)This allows vertical movement of the video image for a  
centered presentation display.  
Video & audio levelThe RGB 324 and RGB 340 allow you to make video and  
audio level adjustments right from the buffer.  
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RGB 320 Switching Interface System  
Users Manual  
Chapter Two  
Rear Panel Connections  
Connecting the RGB 320 Switching Interface  
Rear Panel Connectors  
Choosing Cables  
Composite Cables  
2
Buffer Input Cables  
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Installing RGB 320 Switching Interface Components Chapter 2  
Connecting the RGB 320 Switching Interface  
The RGB 320 has six inputs and two outputs, plus connections for RS-232  
controls. Figure 2-1 shows an example of the types of equipment that may be part  
of the interface system.  
Each RGB 320 input has five BNC connectors to allow for RGsB, RGBS or  
RGBHV input. There are also connectors for stereo audio. Although different  
devices can be used as inputs to the RGB 320, it was designed to be the center  
of a switching interface system, using buffer devices mounted in a wall, a table or  
a podium. Extron makes three types of buffer units that provide remote input to  
the RGB 320. In addition, the RGB 320 is a switcher, allowing one of six inputs to  
be displayed through a projector or monitor.  
The two buffered outputs are identical, with six BNC connectors and 2-channel  
stereo audio. For example, one output may be used for the main display device (a  
projector or data monitor), while the other may go to a rack or podium mounted  
monitor. Switching and controls affect both output devices the same.  
Figure 2-1. The RGB 320 as a Computer Video Switching Interface to a Line-quadrupling System  
The example in Figure 2-1 includes a System 4LQex as the device that feeds the  
projector, with the RGB 320 as its fourth input. This allows for six remote  
computer video inputs, through the RGB 322, 324, 326 and 340 buffers, and three  
System 4 inputs for other video input signals to be line-quadrupled.  
The main focus of the procedures described here will be for using these input  
buffers: RGB 322, RGB 324, RGB 326 and RGB 340. A Users Manual  
(P/N 68-338-01), which gives details on installation and operation of the buffers,  
is also shipped with each buffer.  
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Chapter 2 Installing the RGB 320 Switching Interface Components  
Rear Panel Connectors  
Each of the six inputs has the following connectors:  
5 BNCs  
Red video (R)  
Green video (G)  
Blue video (B)  
Horizontal sync, or composite (H/HV)  
Vertical sync (V)  
3.5 mm 10-pole captive screw (left 5 for audio)  
Left channel audio +  
1
L
1
R
Left channel audio –  
Ground (common to both left and right channels)  
Right channel audio +  
Right channel audio –  
3.5 mm 10-pole captive screw  
(the right-most 5 are for communication and power between the input buffer and  
the RGB 320, and are labeled A, B, C, D and E )  
OUTPUTS  
A
S
B
6
1
2
3
4
5
AUDIO  
REMOTE  
L
1
R
L
2
R
L
3
R
L
4
R
L
5
R
L
6
R
L
R
L
R
A
B
Figure 2-2. The Rear Panel Has Connectors for Six Inputs and Two Outputs  
Each of the two outputs (A and B) has the following connectors:  
OUTPUTS  
6 BNCs  
Red video (R)  
Green video (G)  
Blue video (B)  
Composite sync (S)  
Horizontal sync (H)  
Vertical sync (V)  
A
B
S
AUDIO  
RE  
L
R
L
R
A
B
3.5 mm 10-pole captive screw (5 for audio A, 5 for audio B)  
Left channel audio +  
Left channel audio –  
Ground (common to both left and right channels)  
Right channel audio +  
Right channel audio –  
_______ Seven 3.5 mm 10-pole captive screw connectors (P/N 10-319-11) are included  
with each RGB 320. Six are for the inputs (audio/communications/power), and  
one is for the output (audio A and audio B). One of these connectors is also  
included with each RGB 322/324/326/340 input buffer.  
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Installing RGB 320 Switching Interface Components Chapter 2  
Audio Input Connections  
The 10-pole receptacles are located on the rear panel below the BNC connectors.  
Inputs are on the left side, and outputs are on the right. Each input receptacle has  
five poles on its left labeled for left (L) and right (R) stereo, and the input number  
is also labeled. Polarity (+/-) and ground are marked below. The right five poles  
are labeled COM and PWR for use with an RGB 322/324/326/340 input buffer.  
Input  
Cable connectors are supplied with the RGB 320, one for each input and output.  
L
2
R
The wires are secured using the captive screws inside the  
Input  
connectors. (See Figure 2-3.) Each connector is then  
L
2
R
plugged into the appropriate input channel position on  
the rear panel. If you are not using RGB 322/324/326/  
340 input buffers, the right five poles are not used.  
Figure 2-3. Audio/Comm/Power Input Connectors with Captive Screws  
When making connections for the RGB 320 from existing audio cables, see  
Figures 2-5a and 2.5b. The round audio connectors are shown with the top one  
(tip and sleeve only) for unbalanced audio and the bottom one (tip, ring and  
sleeve) for balanced audio. The ring, tipand sleevemarkings are also used  
on the captive screw audio connector diagrams in Figure 2-5a and 2-5b. These  
examples can be used together as a guide for making audio cables.  
Tip  
Sleeve  
Tip (+)  
Ring (-)  
Ring (-)  
Sleeve  
Figure 2-4. Examples of Round Audio Cable Connectors  
Balanced Input (high impedance)  
Three methods of wiring the connectors for audio input are listed and shown here.  
Only the first method is used with RGB 324/326/340 input buffers.  
Tip  
Left  
Ring  
Gnd  
Sleeve(s)  
Tip  
Balanced High Impedance (High Z) Stereo Tip, Ring (Left & Right stereo)  
Right  
Ring  
See Figure 2-8 for wiring RGB 324/326/340 buffers.  
Balanced Input (600 ohms)  
other half of connector  
Tip  
Ring 600 ohm  
Left  
Figure 2-5a. Wiring the Input Audio Connectors Using RGB 324/326/340 Buffer  
Gnd  
Sleeve(s)  
Tip  
Right  
Input  
Ring  
600 ohm  
If you are not using RGB 324/326/340 for audio  
L
2
R
other half of connector  
inputs, any of the three methods can be used.  
Unbalanced Input (high impedance)  
Tip  
Balanced 600 ohm input Impedance Stereo Tip,  
Ring (Left & Right)  
Left  
Sleeve  
Gnd  
Unbalanced High Impedance (High Z) Stereo Tip,  
Ring, Ground (Left & Right)  
Tip  
Right  
Sleeve  
Figure 2-5b. Wiring the Input Audio Connectors Not Using RGB 324/326/340 Buffer  
other half of connector  
Audio Output Connections  
There are two audio outputs in one 10-pole connector. The left half is output A,  
and the right half is output B. They can be wired in one of three ways.  
Balanced Output (high impedance)  
Unbalanced Output (high impedance)  
Tip  
Balanced Output (600 ohms)  
Tip  
Tip  
Left  
Left  
Ring  
See warning.  
Sleeve(s)  
Left  
Ring  
Gnd  
Sleeve(s)  
Tip  
Gnd  
Sleeve(s)  
Tip  
Ring  
Gnd  
other half of connector  
Output  
Tip  
See warning.  
Right  
Right  
Right  
Ring  
other half of connector  
other half of connector  
Figure 2-6a. Three Methods of Wiring Audio Output  
L
A
R
L
B
R
_________ If using the Unbalanced Output example in Figure 2-6a  
(left-most example), connect the sleeve(s) to Ground  
(Gnd). Connecting the sleeve(s) to a negative (-)  
terminal will damage audio output circuits.  
Figure 2-6b. Both Halves of the Output Connector Are Configured the Same  
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Chapter 2 Installing the RGB 320 Switching Interface Components  
Choosing Cables for Remote Inputs  
With the RGB 320 as the center of a computer video interface system, the input  
connectors have specific functions, and the connectors must not be misused. The  
ideal installation will use the RGB 322, RGB 324, RGB 326 or RGB 340 as inputs  
through an installation (or composite) cable. Most of the examples used in this  
manual will make this assumption. The Users Manual for the RGB 322,  
RGB 324, RGB 326, and RGB 340 gives detailed instructions for installing those  
devices. (P/N 68-338-01)  
_________ Regardless of which cables are used, their connectors must be wired the same  
way on both ends. Any crossing of lines could damage the electronic circuits in  
the buffer unit or in the RGB 320.  
Inputs  
Output(s)  
Figure 2-7. Installation Cables Connected to Inputs 1, 3 and 5  
RGB 322/324/326/340 Input Buffer Connections  
Figure 2-8 shows the  
wiring for the audio,  
communications  
No audio on  
RGB 322  
Shielded twisted pair  
(braided shield separated)  
White to L +  
Black to L -  
Shield to ground  
Heat shrink over shield  
and power  
connector for the  
buffer. Note that the  
wire and contact  
Single, 20-gauge wires:  
Brown to C  
Violet to D  
assignments must  
match those on the  
RGB 320 end of the  
cable shown in  
Figures 2-9a and  
2-9b.  
Shield to ground  
Shielded twisted pair  
(braided shield separated)  
Red to R +  
Black to R -  
Heat shrink over shield  
Gray to E  
Shielded twisted pair  
Black to A  
Orange to B  
(with braided shield trimmed)  
Figure 2-8. One Installation Cable Can Be Used for Each Input and Each Output  
Composite Cables  
Composite cables, such as Extrons Installation Cable, make installation easier,  
because one jacketed cable can be dedicated to one input or to one output.  
_______ Installation Cable includes a combination of several types of cables that are  
enclosed in one jacket. The combination can carry video, audio, power,  
communications, etc. If you will be making cables, follow the guidelines in  
Appendix A of the RGB 322, 324,326 and 340 Users Guide.  
Extron Users Manual RGB 320 Switching Interface System  
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Installing RGB 320 Switching Interface Components Chapter 2  
Buffer Input Cables  
Computer video signals coming through a buffer unit (RGB 322/324/326/340) use  
the red, green, blue, horizontal and vertical sync connectors. The audio,  
communications and power (to the buffer) come through the 3.5 mm, 10-pole  
connectors below the BNC connector.  
Red  
White  
Green  
Blue  
Black  
Yellow  
Grn/Blk  
White  
Black  
Shields  
Red  
Black  
Black  
Orange  
Brown  
Violet  
Gray  
Figure 2-9a. Installation Cable Wired for the RGB 320  
Electrical  
box  
Mini Coax  
Blue  
Green  
Red  
White  
Bend radius  
approximately  
3.5 inches  
No audio on  
RGB 322  
twisted pair and would probably be neater. It  
Black  
Yellow  
Grn/Blk  
Clamp  
(not too  
tight)  
White  
Black  
Shields  
Red  
Black  
Black  
Orange  
Brown  
Violet  
Gray  
Figure 2-9b. Installation Cable Wired for the RGB 322/324/326/340 (RGB 322 Has No Audio)  
The type of adapter cable used to connect the computer to an input buffer will  
depend on the brand and type of computer. It must adapt to the 9-pin, male  
connector on the RGB 322, 324, 326, or 340 buffer unit.  
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RGB 320 Switching Interface System  
Users Manual  
Chapter Three  
Operating the RGB 320 Panels  
Controlling the RGB 320 Interface  
Input Buffer Control (RGB 322/324/326/340)  
Using the RGB 320 Front Panel Buttons  
Making Adjustments from the RGB 320 Front Panel  
3
Rear Panel Switches  
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Operating the RGB 320 Panels Chapter 3  
Controlling the RGB 320 Interface  
The RGB 320 can be controlled from the front panel, from an input buffer, from an  
external RS-232 device or from Extrons Windows® based control software. This  
includes selecting video, audio or both from one of six inputs, adjusting horizontal  
and vertical centering or adjusting the video and audio levels. See Chapter 4 for  
Windows® software and Appendix A for RS-232 programming.  
Figure 3-1. The RGB 320 Front Panel  
Memory Functions (store/recall/clear)  
Although the interface functions are processed within the RGB 320, virtual  
interfacingcan be done from an RGB 322, RGB 324 or RGB 340 buffer by  
pressing the Show Mebutton on its panel. The button requests that the  
RGB 320 display the input signal from that buffer to the output display device(s),  
and also initiates communication with the RGB 320 to allow adjustments to be  
made from the buffer panel. These include horizontal shift, vertical shift, video  
levels and audio levels. See the users manual 68-338-01 for details.  
Adjustments for all inputs (buffers or other devices) can be made from the front  
panel, or from an RS-232 host device. Regardless of where they were made,  
these settings are saved in memory blocks associated with each input.  
________ Memory blocks for each input can be cleared from the front panel by holding the  
Video/Audio button while pressing the Input button for the channel to be reset.  
The input LEDs blink and then are steady onwhen memory has been cleared.  
When an input is selected, the RGB 320 searches for a configuration that  
matches that computer, and it automatically recalls the appropriate video scan  
rate. It may not be necessary to recalibrate the settings when a computer is  
selected from an input. Ten of the most popular computer scan rates are  
permanently programmed into the RGB 320s memory.  
LCD Display  
The front panel LCD screen displays  
five functions:  
The default display shows the scan rate  
for the selected input (if no video is  
connected to the selected input, both  
frequencies will appear as 00.00)  
Horizontal shift (see page 3-4)  
Vertical shift (see page 3-4)  
Video level (see page 3-4)  
Audio level (see page 3-4)  
Figure 3-2. The Front Panel LCD Display  
________ When switching from one input to another, regardless of where it is from, the LCD  
display blinks while lockingin on the new input. For RS-232 programming, the  
message reconfigwill appear during this time. If adjustments are made during  
this transition time, they may not be stored.  
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Chapter 3 Operating the RGB 320 Panels  
Front Panel Controls  
There are panel controls for adjusting four functions for the selected input. These  
will be explained later in this chapter. Although the knobs can be turned endlessly  
(no physical limit), the adjustment level will stop at its highest or lowest value.  
Input buffer control (RGB 322/324/326/340)  
Before going into the operation of the RGB 320 panel, here is an overview of the  
input buffers that can be used with the RGB 320. Details on installing and  
operating the buffer units are in the RGB 322/324/326/340 Users Manual  
(68-338-01). The buffer unitsfeatures are summarized as follows:  
Feature/Buffer model  
Power LED  
Video In  
Audio In  
75 Ohm/Hi Z  
Horizontal shift adjust  
Vertical shift adjust  
Show me/Select button  
Show me/Select light  
Mount in wall/furniture  
Mount under table/shelf  
Available in three colors  
Type  
322  
yes  
yes  
no  
yes  
yes  
no  
yes  
yes  
yes  
no  
324  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
no  
326  
yes  
yes  
yes  
yes  
no  
no  
no  
no  
yes  
no  
340  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
no  
indicator  
connector  
connector  
switch  
control  
control  
control  
indicator  
design  
design  
yes  
no  
design  
yes  
yes  
yes  
Figure 3-3. RGB 322/324/326/340 Differences  
All buffers except the RGB 326 have some  
control of the RGB 320, as initiated by the  
Show Mebutton. Pressing this button initiates communication with the RGB 320  
for the following:  
Request that the image from this buffer be displayed on the output device(s).  
The Show Melight on the buffer indicates when the input is selected, and it  
blinks for audio breakaway.  
On the RGB 322, if Show Meis lit, use the H. Shift knob for horizontal centering.  
With either the RGB 324 or 340, if Show Meis lit, press the Show Mebutton  
again and observe which of the four green LEDs is lit for the four adjustments:  
H Shift, V. Shift, Video Level and Audio Level. Press the Show Mebutton until  
the desired function is selected. Turn the Adjustknob to make the adjustment.  
The buffers power light shows power onand blinks when the RGB 320 is busy.  
Although the RGB 326 cannot request that its input be displayed, it has an active  
light to show that it has been selected by the RGB 320 from another source.  
Adjustable horizontal and vertical shift (centering) for the selected input.  
Extron Users Manual RGB 320 Switching Interface System  
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Operating the RGB 320 Panels Chapter 3  
Using the RGB 320 Front Panel Buttons  
Of the seven buttons on the front panel shown in Figure 3-4, the left-most button  
(A/V Mode) determines what will be selected (audio, video or both), and the other  
six buttons are used to select an input.  
Figure 3-4. RGB 320 Front Panel A/V Mode and Input Selection Buttons  
The A/V Mode button has two LEDs next to it. The top one (red) is for video and  
the bottom one (green) is for audio. Press the button for one of three modes:  
Video and audio (audio follow)  
Video only (breakaway)  
Audio only (breakaway)  
The two LEDs will light  
according to the active  
mode. Before selecting an  
input, if you do not want the  
mode that is indicated, press  
the button until the LEDs  
indicate the mode you want.  
Example: If both LEDs are lit,  
both video and audio will be  
switched. If you want video only  
from input #6, press the mode switch  
until the video LED is lit and the audio  
LED is unlit. (See Figure 3-5.)  
________ This button is also used to clear memory blocks.  
See note on Page 3-1.  
Figure 3-5. Select the A/V Mode by Pressing the Button on the RGB 320 Front Panel  
Press the input #6 button. Because you selected the video-only mode, the video  
LED #6 (next to button #6) will light, but the audio LED #6 will not light.  
When the RGB 320  
switches to input #6, the  
horizontal and vertical  
frequencies for the  
computer video from that input will be  
displayed in the LCD default screen. (See  
Figure 3-7.)  
The audio input LED will remain lit for the  
last input selected with audio. For this  
example, input #3 had been selected  
previously, and it had audio; therefore,  
the input #3 audio LED will remain  
on, as will the input #6 video LED.  
Figure 3-6. Select the Desired Input by Pressing Its Button  
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Chapter 3 Operating the RGB 320 Panels  
Making Input Adjustments from the RGB 320 Front Panel  
When adjustments are being made from the front panel, an input buffer or an  
RS-232 device, the results are displayed on the LCD screen. Otherwise, the  
default screen displays the horizontal and vertical frequencies. See Figure 3-7.  
________ Do not make adjustments immediately after switching inputs. Wait for the Horz  
and Vert frequency values on the LCD panel to stabilize, or for the image on the  
output display to stabilize. If adjustments are made before that time, they may not  
be stored.  
Turn any of the four adjustment knobs to adjust the current setting for that  
function, for the selected input if it is not currently being adjusted from another  
source. This appears on the LCD screen as the adjustment is being made. When  
the adjustment is complete, release the knob and, after a 7.5 second time-out, the  
Tx LED blinks and the LCD once again displays the default screen.  
Figure 3-7. Example of the Input Frequencies Being Displayed on the Default Screen  
________ The LCD display will also show an adjustment that is being made from a remote  
buffer unit or an RS-232 device.  
However, the buffer unit has  
priority over the panel and  
the RS-232 device. (For  
example, if an RGB 324  
has V. Shift selected,  
turning a knob on the  
panel does nothing  
until after the time-  
out.  
Figure 3-8. Turn the Appropriate Knob to Adjust an Input Function; the LCD Displays the Action  
Four Video and Audio Adjustments  
Following is a description of each of the four adjustments. The LCD screen  
displays the high and low limits for the adjustments, as well as the current value.  
Adjustments  
Horizontal shift Moves the displayed image left and right on the screen. This is also  
affect both of the  
called Horizontal Centering.  
RGB 320 outputs;  
therefore, for best  
results, observe the  
primary display  
Vertical shift Moves the displayed image up and down on the screen. This is also  
called Vertical Centering.  
(projector), instead of  
the secondary display  
(a monitor in a rack or  
podium), while making  
the adjustment.  
Video level A video level control is provided to compensate for a weak or strong  
video signal. For example, if the signal from input #1 is weak and the signal from  
input #3 is strong, each signal can be adjusted and stored to memory. This allows  
for better balance when switching from one input to another. (Unity gain is the  
middle of the range, at 128.)  
Audio level Adjusts the audio level for the selected input and saves it to memory.  
________ In breakaway mode, the  
audio and video  
adjustments will be for  
different inputs.  
Figure 3-9. The Appropriate Display Will Appear on the LCD Screen  
Extron Users Manual RGB 320 Switching Interface System  
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Operating the RGB 320 Panels Chapter 3  
Diagnostic LEDs  
The front panel has six diagnostic LEDs. The right-most pair monitor +15 and -15  
voltages, and the middle pair monitors +8 and -8 voltages. If any of these four  
LEDs are not lit, the system will malfunction.  
The left-most pair of LEDs will blink during  
RS-232 communication with a controlling  
device. Tx is transmit and Rx is receive.  
________ Tx blinks each time a panel change has  
been completed to notify the host of a  
change in status.  
Figure 3-10. Six Diagnostic LEDs on the Front Panel  
Rear Panel Switches  
Switches on the rear panel affect all the video signals that come from the  
RGB 320.  
Peaking Switch  
To the left of the DIP switches is a three-position toggle switch. If the RGB 320 is  
driving long cables, this switch allows  
compensation for cable capacitance. The  
middle position is Normal and does not alter  
the output load. The lower position provides  
50% peaking, and the upper position provides  
100% peaking. Set the switch in the position  
that provides the best image on the output  
display device.  
Figure 3-11. Peaking Switch and DIP Switches are Located in the Lower-right Section of the Rear Panel  
DIP Switches: Sync Options and Serration Pulses  
The DIP switches are located in the lower-right section of the rear panel. The  
factory settings are all Off. Their functions are as follows:  
1 LCD Select  
Use the on position for an LCD output device or other digital device. In this  
position, the horizontal and vertical shift (centering) controls are not active. Use  
the off position for non-LCD or analog devices.  
________ Because this switch disables the RGB 320 centering controls, when adjusting  
centering from the projector, turn this switch on before adjusting the projectors  
centering controls.  
2 Ser. Remove  
Use the on position to remove serration pulses. In the off position, the RGB 320  
will allow serration pulses, or it will add them if they are not already present.  
3 V. Sync Pulse  
In the on position, this switch increases the width of the vertical sync pulse to  
approximately twice its original duration. The actual sync width will depend upon  
the frequency of the incoming signal. Use the off position for normal width.  
4 Neg. Sync  
Use the on position for negative sync. This setting would depend upon the  
requirements of the output display device (projector).  
5 SOG  
In the on position, sync on green is forced. Because the RGB 320 has three BNC  
connectors for output sync, there is always one output with composite and two for  
separate horizontal and vertical sync.  
6 Spare  
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RGB 320 Switching Interface System  
Users Manual  
Chapter Four  
Using Windows® Control Program  
Installing Windows® Software Control  
Normal Windows Control Panel  
Executive Mode Panel  
RGB 320 Help  
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Using Windows® Control Software  
Installing Windows® Control Software  
This chapter is dedicated to using Extrons Windows Control Program for  
RGB 320 via RS-232software. Extron supplies this software that runs in the  
Windows® operating system, version 3.1 or later. Communication between the  
computer software and the RGB 320 is established after connecting the computer  
to the RS-232 port on the rear panel of the RGB 320.  
1. Connect the PCs serial port  
to the RS-232 connector on  
the back of the RGB 320.  
2. Power up the RGB 320 and  
the PC, and load Windows.  
3. To install the software from  
the 3.5floppy disk onto the  
hard disk, run Setup.exe from  
the floppy disk. (Its just like  
any other Windows  
application.)  
_______ The floppy disk has instructions  
printed on the label. The software  
can be run from the floppy drive, or  
it can be loaded onto the hard drive  
PC with Windows®  
Operating System  
and run from there.  
Figure 4-1. Connect the PC to the RGB 320 Switching Interface  
4. Installation of the software creates a program group (Windows 3.1) or a folder  
(Windows 95®) called Extron Electronics. Icons for the control program and the  
help program are installed in that group or folder. The window in Figure 4-2 shows  
an Extron program group. This example is from Windows 3.1, and it includes  
Extrons VTG 200 Control Program; your system may not have the VTG 200  
software. (VTG = Video Test Generator.)  
Figure 4-2. Extrons Program Group  
5. Double-click on the RGB 320 icon to start the program. You will be asked to  
select the serial port. After selecting the serial port, the software looks for the  
RGB 320, readsits configuration, and then displays it in a window called  
Extrons RGB 320 Interface Control Program.  
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Using Windows® Control Software  
Normal Windows Control Panel  
Figure 4-3 shows an example of the normal Windows control panel. In addition to  
the six input switches, there are:  
Audio Mute button  
Scan rate display screen (same information as on the front panel LCD screen)  
Video and Audio check boxes (right side) this allows control for switching video  
and audio, or either video or audio (breakaway).  
The four controls have the  
same functions as the four  
knobs on the front panel. The  
up/down nudge buttons  
change the value of the  
function, while the numeric  
value is displayed in the  
window next to the set of  
buttons.  
Figure 4-3. Control Panel Functions  
Executive Mode Panel  
Executive Mode allows a limited control panel so that the video and audio  
adjustments cannot be changed. Only input switching and audio mute are  
available from this panel.  
See Figure 4-4.  
After the adjustments have been set from  
the normal Windows control panel (Figure  
4-3), switch to Executive Mode by selecting  
the Executive Mode pull-down menu.  
Figure 4-4. Executive Mode Uses a Limited Panel  
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Using Windows® Control Software  
RGB 320 Help  
Double-click on the Help icon (or press F1 at any time) to open the Help window.  
Below is an example of what this might look like.  
As with all Windows® help files, clicking on the underlined words will give more  
detailed help.  
Extron’s RGB 320 Control Program Help Contents  
To learn how to use Help, press F1 or choose Using Help from the Help menu.  
The RGB 320 Control program communicates with the Extron RGB 320  
Switching Interface through the units RS-232 port. (Defaults to 9600 baud, 8-  
bit, 1 stop, no parity). It represents the same functions found on the units front-  
panel, but in an interactive graphical interface.  
RGB 320 Main Screen (Normal mode):  
RGB 320 Main Screen (Executive mode):  
For Help on specific buttons and controls, click the appropriate item above.  
Note that pressing F1 within the program will provide context-sensitive help.  
Figure 4-5. RGB 320 Help  
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RGB 320 Switching Interface System  
Users Manual  
Appendix A  
Programming the RGB 320  
Remote Control Port (RS-232 and Contact Closure)  
Host-to-RGB 320 Instructions  
Command/Response Table  
RGB 320-Initiated Messages  
A
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RS-232 Programming Appendix A  
Remote Control Port (RS-232 and Contact Closure)  
Figure A-1 shows the RS-232 port connector. This is used to connect to a host, or  
to an external controlling device, such as a computer or control panel, that can  
generate the proper command codes and can recognize the RGB 320 responses.  
In addition to having RS-232 connections (pins 2, 3 and 5), there are also six  
contact closure inputs that share the ground on pin #5.  
Contact Closure Operation  
A third party contact closure device can supply momentary contact between a  
designated input pin and ground (pin #5), causing the RGB 320 to switch to that  
input. Momentary contact is defined as having a duration of 250 to 500  
milliseconds, e.g., touching pin #4 to pin #5 for the required time causes the  
RGB 320 to switch to input #2.  
_________ When connecting to RS-232, do not connect devices that use pins 1, 4, 6, 7, 8 or  
9 for other signals or voltages. This will cause the RGB 320 to malfunction.  
The RS-232 connector is a 9-pin D female connector with the following pin  
designations:  
Pin  
1
2
RS-232  
Usage  
Contact Closure  
RS-232 Transmit Data  
REMOTE  
Input #1  
Tx  
3
4
5
6
7
Rx  
Input #2  
Gnd  
Input #3  
Input #4  
RS-232 Receive Data  
RS-232/CONTACT  
Contact Closure  
Signal Ground (both)  
Contact Closure  
Contact Closure  
8
9
Input #5  
Input #6  
Contact Closure  
Contact Closure  
Figure A-1. Serial Port Connector Wired for Both RS-232 and Contact Closure  
Commands and responses for programming the RGB 320 Switching Interface  
from a host system connected to the RS-232 port are listed on the next page.  
The RS-232 protocol is 9600 baud, 8-bit, 1 stop bit and no parity.  
Host-to-RGB 320 Instructions  
The RGB 320 will  
recognize certain ASCII  
characters as instructions.  
It then responds to those  
characters with  
appropriate information.  
Unrecognizable codes will  
get an error code with the  
response.  
Touch-panel with  
RS-232 control  
Figure A-2. Example of a Touch Panel Connected to the RS-232 Port  
A-1  
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Appendix A RS-232 Programming  
Command/Response Table  
Definitions and abbreviations:  
= CR/LF  
= input #1 through 6, or 0 = input disconnected  
= 0 thru 255 (enhancement control range)  
= xxx.xx (frequency in Hz or kHz)  
= 0 thru 9 (10 steps of audio gain)  
= numeric value -15 thru +09  
= controller software version to 2nd decimal place  
= 0 or 1, 0 = Off, 1 = On  
= 15 thru 1 (15 steps of audio attenuation)  
= space (If indicated, the space must be there.)  
·
Ah = this is a hexadecimal number  
ph = phase: Hph - horiz shift; Vph - vert shift  
rt = rate: Hrt - horiz frequency rate; Vrt - vert frequency rate  
mt= mute: Amt - audio mute  
brt= brightness - video level  
Command from Host  
Host Code  
Resp  
Examples  
Description  
ASCII HEX  
to Host  
Com. Response  
Action/Explanation  
Select input channel (aud & vid)  
Select input channel (audio only)  
Select input channel (video only)  
!
$
&
h21h  
h24h  
h26h  
C
A
V
5!  
3$  
4&  
C5  
A3  
V4  
Select input channel #5(aud & vid)  
Select audio input channel #3  
Select video input channel #4  
Set hor. shift value (Hph) to  
Increment horizontal shift value  
Decrement horizontal shift value  
H
h48h Hph  
Hph  
}H 7Dh48h Hph  
39H  
{H  
}H  
Hph039  
Hph040  
Hph039  
Set horizontal shift value to 39  
Increase horizontal shift by 1  
Decrease horizontal shift by 1  
{H 7Bh48h  
Set vert. shift value (Vph) to  
Increment vertical shift value  
Decrement vertical shift value  
/
h2Fh Vph  
7Bh2Fh Vph  
7Dh2Fh Vph  
57/  
{/  
}/  
Vph057  
Vph058  
Vph057  
Set vertical shift value to 57  
Increase vertical shift value by 1  
Decrease vertical shift value by 1  
{/  
}/  
Note: A higher value moves the image downward, and a lower value moves it upward on the screen.  
Set video level value (Brt) to  
Increment video level value  
Decrement video level value  
Y
h59h  
7Bh59h  
Brt  
Brt  
32Y  
{Y  
}Y  
Brt032  
Brt033  
Brt032  
Set video level value to 32  
Increase video level by 1  
Decrease video level by 1  
{Y  
}Y 7Dh59h Brt  
Audio un-mute  
Audio mute  
z
Z
7A  
5A  
Amt0  
Amt1  
z
Z
Amt0  
Amt1  
Mute is off.  
Mute is on.  
Set channel gain (Aud) to  
Set audio channel attenuation  
Increment audio level value  
Decrement audio level value  
G
g
h47h Aud  
h67h Aud  
7G  
1g  
{G  
}G  
Aud+07  
Aud-01  
Aud+08  
Aud+06  
Set audio value to +7 dB  
Set audio value to 1 dB  
Increase audio level by 1  
Decrease audio level by 1  
{G 7Bh47h  
}G 7Dh47h Aud  
Aud  
Information request (Same as I)  
Information request  
i
I
69h  
49h  
V
V
·A ·Amt ·Hph ·Vph ·Brt ·Aud ·Hrt ·Vrt ·Max6  
·A ·Amt ·Hph ·Vph ·Brt ·Aud ·Hrt ·Vrt ·Max6  
Where: V=video channel; A=audio channel; Amt=aud mute; Hph = horiz shift; Vph=vert shift; Max=highest channel#  
Response example: V2·A2·Amt0·Hph000·Vph255·Brt127·Aud+03·Hrt015.75·Vrt059.93·Max6  
Request part number (Same as N)  
Request part number  
n
N
6Eh  
4Eh  
N60-232-01  
N60-232-01  
(60-232-01 = RGB 320)  
(60-232-01 = RGB 320)  
Query software version (Same as Q) q  
71h  
51h  
QVER  
QVER  
q
QVER1.23  
(1.23 is example only)  
Query software version  
Q
Error Response  
Code  
Description  
Invalid channel number  
Invalid command  
Invalid value  
E01  
E10  
E13  
E16  
Input number requested could be greater than 6 (too large).  
Command code not recognized.  
Specified number could be out of range. (e.g., set video level to 256)  
Adjustments are being made from an RGB 322/324/340 buffer.  
Busy  
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RS-232 Programming Appendix A  
RGB 320-Initiated Messages  
When a local event takes place, such as a front panel operation, the RGB 320  
responds by sending a message to the host. These RGB 320-initiated messages  
are listed below.  
(C) COPYRIGHT 1997, EXTRON ELECTRONICS RGB 320, VX.XX  
Power-on message:  
The AC power has been applied. (x.xx is the software version number.)  
RECONFIG  
A change has been detected: from the front panel or from an RGB 322/324/340  
buffer, a change in scan rate frequency has been detected, or an operation has  
occurred that requires a new memory block to be written. No response is  
expected from the host, but, for example, the host program may want to request  
new status (I or i command).  
Ci or Ai or Vi (where iis the input channel number)  
The input has just been switched. A=audio; V=video; C = both audio & video.  
________  
A-3  
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RGB 320 Switching Interface System  
Users Manual  
Appendix B  
Reference Material  
Related Product Lists  
Glossary of Terms  
B
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Reference and Glossary Appendix B  
Related Parts  
Monitor Breakout Cables  
MBC VGA/XGA HR  
MBC Mac/Quadra  
MBC SUN Sparc HR  
26-162-01  
26-018-02  
26-424-01  
Laptop Breakout Cables  
LBC VGA HR 3’  
26-224-02  
26-224-01  
26-224-03  
26-363-03  
26-363-01  
26-363-04  
26-413-04  
26-413-01  
26-413-05  
LBC VGA HR 6’  
LBC VGA HR 12’  
LBC Mac HR 3’  
LBC Mac HR 6’  
LBC Mac HR 12’  
LBC SUN HR 3(61 kHz)  
LBC SUN HR 6(61 kHz)  
LBC SUN HR 12(61 kHz)  
LBC SUN HR 3(71 kHz)  
LBC SUN HR 6(71 kHz)  
LBC SUN HR 12(71 kHz)  
LBC SUN HR 3(81 kHz)  
LBC SUN HR 6(81 kHz)  
LBC SUN HR 12(81 kHz)  
26-413-06  
26-413-02  
26-413-07  
26-413-08  
26-413-03  
26-413-09  
LBC Mac/VGA 35 HR  
26-394-01  
Laptop Breakout Cables with Audio  
LBC VGA HR 3A  
26-441-01  
26-441-02  
26-441-03  
LBC VGA HR 6A  
LBC VGA HR 12A  
LBC Mac HR 3A  
LBC Mac HR 6A  
LBC Mac HR 12A  
LBC SUN HR 3A (61 kHz)  
LBC SUN HR 6A (61 kHz)  
LBC SUN HR 12A (61 kHz)  
26-442-01  
26-442-02  
26-442-03  
26-443-01  
26-443-02  
26-443-03  
LBC SUN HR 3A (71 kHz)  
LBC SUN HR 6A (71 kHz)  
LBC SUN HR 12A (71 kHz)  
LBC SUN HR 3A (81 kHz)  
LBC SUN HR 6A (81 kHz)  
LBC SUN HR 12A (81 kHz)  
26-444-01  
26-444-02  
26-444-03  
26-445-01  
26-445-02  
26-445-03  
Cable and Connectors  
Hi-Res Installation Cable (500 ft.)  
Hi-Res Installation Cable (1,000 ft.)  
22-111-03  
22-111-04  
3.5 mm 10-pole captive screw connectors 10-319-11  
BNC connectors for mini-high-res cables 100-074-51  
Red heat shrink, for mini-hi-res cable (1 ft.) 39-010-03  
Green heat shrink, for mini-hi-res cable(1 ft.) 39-011-03  
Blue heat shrink, for mini-hi-res cable (1 ft.) 39-012-03  
Yellow heat shrink, for mini-hi-res cable(1 ft.)39-013-03  
Black heat shrink, for mini-hi-res cable(1 ft.) 39-018-03  
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Appendix B Reference and Glossary  
Glossary of Terms  
For a complete glossary, see Extrons web site (http://www.extron.com)  
AC –  
Alternating current. The flow of electrons that changes direction alternately.  
AC reset –  
The status that changes when power is removed from a device. Many electronic  
devices have live power inside, even after power offhas been initiated from a  
panel or remote control device. This is not the same as AC reset, when power is  
removed at the AC cord.  
Amp –  
Ampere. The international base unit of electric current. Symbolized by A. 1 amp  
is equal to the steady current produced by 1 volt applied across a resistance of 1  
ohm.  
Analog –  
A continuous action or movement that takes time to make a transition from one  
level to another. Standard audio and video signals are analog. An analog signal  
has an infinite number of levels between its highest and lowest value. (Changes  
are not made by steps, such as with digital.)  
ANSI –  
ASCII –  
American National Standards Institute. The organization that sets standards for  
US A/V equipment.  
American Standard Code for Information Interchange. The standard code  
consisting of 7-bit coded characters (8 bits including parity check), utilized to  
exchange information between data processing systems, data communication  
systems and associated equipment. The ASCII set contains control characters  
and graphic characters.  
Attenuation –  
Audio follow –  
To reduce the amplitude (strength) of a signal or current.  
A term used when an audio signal is tied to the video signal and they are switched  
together; the opposite of breakaway.  
Balanced audio –  
Bandwidth –  
Audio circuits that use three conductors for one audio signal: plus (+), minus (-)  
and ground. The ground conductor is strictly for shielding, and does not carry any  
signal. Also called differential audio.  
A frequency range, or bandof frequencies, between the limits defined by the  
half power points, where the signal loss is -3dB. In audio and video, it is this  
band of frequencies that can pass through a device without significant loss or  
distortion. The wider the bandwidth, the better the quality that results, such as a  
sharper picture, better sound, etc. The higher the bandwidth number, the better  
the performance. (300 MHz is better than 250 MHz.) When a signal passes  
through a path with more than one device (including cables), the limiting factor  
(bottleneck) in that path is the device with the narrowest bandwidth.  
Blooming –  
Most noticeable at the edges of images on a CRT, bloomingis when the light  
hitting the screen is too intense and overdrives the phosphors. The edges of an  
image seem to exceed its boundaries. Thin lines and sharp edges may look thick  
and fuzzy. This may be caused by the brightness being set too high, or by a high  
voltage problem.  
BNC –  
Breakaway –  
Buffer –  
A cylindrical bayonet connector that operates with a twist-locking motion. Two  
curved grooves in the collar of the male connector are aligned with two  
projections on the outside of the female collar. This allows the connector to be  
locked in place without tools.  
The ability to separate video and audio signals for the purpose of switching them  
independently. For example, an audio and video signal from the same source  
may be broken awayand switched to different destinations. This is the opposite  
of audio follow.  
Generally referred to as a unity gain amplifier, a buffer is used to isolate the signal  
source from the load. A buffer can be used for digital or analog signals. The  
RGB 322, 324, 326 and 340 are input buffers to the RGB 320 switching interface.  
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Reference and Glossary Appendix B  
Cable equalization –  
Capacitance –  
The method of altering the frequency response of a video amplifier to compensate  
for high frequency losses in cables that it feeds. See peaking.  
The storing of an electrical charge. Capacitance is a condition that exists between  
conductors in a cable. At high frequencies, this represents an impedance called  
capacitive reactance (Xc), which can cause signal loss or distortion.  
Chroma –  
The characteristics of color information, independent of luminance intensity. Hue  
and saturation are qualities of chroma. Black, gray and white objects do not have  
chroma characteristics.  
Chrominance signal –  
Coaxial cable –  
Part of a television signal containing the color information. Abbreviated as C.  
A two-conductor wire in which one conductor completely wraps the other  
conductor, with the two separated by insulation. Constant impedance  
transmission cable. Abbreviated as coax.  
Component video –  
Our color television system starts with three channels of information; red, green,  
& blue (RGB). In the process of translating these channels to a single composite  
video signal, they are often first converted to Y, R-Y, and B-Y. Both 3-channel  
systems, RGB and Y, R -Y, B -Y, are component video signals. They are the  
components that eventually make up the composite video signal. Higher quality  
program production is possible if the elements are assembled in the component  
domain.  
Composite sync –  
A signal combining horizontal and vertical sync pulses and equalizing pulses, with  
no picture information and no signal reference level. Sometimes called C, S (as in  
RGBS) or HV.  
Composite video –  
Contact closure –  
Contrast –  
An all-in-one video signal comprised of the luminance (black and white),  
chrominance (color), blanking pulses, sync pulses and color burst.  
A device that provides electrical contact between a designated input pin and  
ground, causing a device, such as a switcher, to do a particular function.  
The range of light and dark values in a picture, or the ratio between the maximum  
and the minimum brightness values. Low contrast is shown mainly as shades of  
gray, while high contrast is shown as blacks and whites with very little gray. It is  
also a TV monitor adjustment that increases or decreases the level of contrast of  
a displayed picture. Also called white level.  
Crosstalk –  
Interference between two audio or video signals, usually from an adjacent  
channel, that adds an undesired signal to the desired signal. Crosstalk is caused  
by magnetic/capacitative coupling or electrostatic induction, and can occur when  
there are grounding problems or improper cable shielding. Video symptoms  
include noise/ghosting, and audio symptoms include signal leakage.  
Crosstalk isolation –  
D connector –  
Attenuation of an undesired signal introduced by crosstalk.  
A connector with rounded corners and angled ends, taking on the shape of the  
letter D. Commonly used in computers and video.  
dB –  
Decibel. The standard unit used to express gain or loss of power. It indicates the  
logarithmic ratio of output power divided by input power. A power loss of 3 dB is  
an attenuation of half of the original value. The term 3 dB downis used to  
describe the half power point.  
DC –  
Decibel –  
Decoder –  
Direct current. The flow of electrons in one direction.  
See dB.  
A device used to separate the RGBS (red, green, blue and sync) signals from a  
composite video signal.  
Differential audio –  
See balanced audio.  
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Appendix B Reference and Glossary  
Distribution amplifier –  
DA. A device that allows connection of one input source to multiple, isolated  
(buffered) output sources such as monitors or projectors.  
FCC –  
Field –  
Federal Communications Commission. The US governmental agency that  
controls and makes all policy for the use of broadcast airwaves.  
One half of a standard television frame, containing every other line of information.  
Each standard video frame contains two interlaced fields, sometimes referred to  
as field 1 and field 2.  
Flicker –  
An alternating change of light intensity, typically perceived at a rate of a few hertz  
to 60 Hz when viewing static images such as text. Flicker can occur when the  
electron gun paints the screen too slowly, giving the phosphors on the screen  
time to fade before they are refreshed.  
Frame –  
Frequency range –  
Gain –  
One complete picture in interlaced video. A video frame is made up of two fields,  
or two sets of interlaced lines.  
The low-to-high limits of a device such as a computer, projector or monitor. See  
bandwidth.  
A general term used to denote an increase in signal power or voltage produced  
by an amplifier. The amount of gain is usually expressed in decibels above a  
reference level. Opposite of attenuation.  
Hertz –  
Hz. The international term for cycles per second.  
High impedance  
Hi Z or High Z. In video, when the signal is not terminated it is said to have a Hi Z  
load. Hi Z is typically 800-10k ohms or greater.  
Horizontal rate –  
Horizontal frequency. The number of complete horizontal lines (trace and retrace)  
scanned per second. Typically measured in kHz.  
Horizontal resolution –  
Hue –  
The number of vertical lines that can be perceived in a video device.  
Tint control. The parameter of color that allows us to distinguish between colors.  
Impedance –  
Z. The opposition or loadto a signal, measured in ohms and abbreviated or  
Z. In video, typical low impedance circuits (low Z) are 600 ohms or less, and high  
impedance circuits (high Z) may be 10k ohms or greater. Video termination  
impedance is 75 ohm. Also see high impedance and low impedance.  
Interlaced –  
IRE scale –  
K –  
The process of scanning the picture onto a video screen whereby the lines of one  
scanned field fall evenly between the lines of the preceding field.  
An oscilloscope scale that applies to composite video levels. Typically there are  
140 IRE units in one volt (1 IRE = 7.14 mV).  
kilo. An abbreviation for 1,000. A kilobyte is 1,000 bytes. Because numbers used  
in computer RAM sizes are in binary, the closest number is used. When talking  
about memory size, etc., the numbers are rounded off (e.g., 1k byte is really  
1,024 bytes.)  
kHz –  
LED –  
Kilohertz. One thousand cycles per second.  
Light-emitting diode. A low-power, long-life light source, usually red, green or  
yellow in color. Some LEDs can produce two colors.  
Level control –  
The level control on some interface products is similar to the contrast control on a  
data monitor. It can either increase or decrease the output signal level from the  
interface to a data monitor or projector. This results in more or less contrast in the  
picture.  
Low impedance –  
The condition where the source or load is at a lower impedance than the  
characteristic impedance of the cable. Low source impedance is common; low  
load impedance is usually a fault condition.  
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Reference and Glossary Appendix B  
Luminance –  
The photometric radiance of a light source. The signal that represents brightness  
in a video picture. Luminance is any value between black and white. Luminance is  
abbreviated as Y. Also see chrominance.  
MHz –  
Megahertz. One million cycles per second.  
NTSC –  
National Television Standards Committee. The television standard, for North  
America and parts of South America, having 525 lines/60 Hz (60 Hz refresh). Two  
fields per frame and 30 frames per second.  
Output –  
PAL –  
The product of an operation by a device going to some external destination, such  
as another device, a video screen, image or hard copy.  
Phase Alternate Line. The phase of the color carrier is alternated from line to line.  
It takes four full pictures for the color to horizontal phase relationship to return to  
the reference point. This alternation helps cancel phase errors. For this reason,  
the hue control is not needed on a PAL TV set. PAL, in many forms, is used in  
Australia, England, Scandinavia, South Africa and Western Europe. PAL uses a  
625-line, 50-field composite color transmission system.  
Peak-to-peak –  
Peaking –  
p-p. The amplitude (voltage, for example) difference between the most positive  
and the most negative excursions (peaks) of a signal.  
A means of compensating for mid and high frequency RGB video bandwidth  
response in data monitors and projectors, and for signal losses due to cable  
capacitance. The higher the frequency and the greater the cable length, the more  
peaking may be required.  
Phantom power –  
Pin out –  
Power supplied to a microphone using the shield of a balanced audio connection.  
Microphones using phantom power must be condenser style microphones  
designed for use with phantom power systems. Damage can result to other types  
of audio components from the improper use of phantom power.  
An illustration or table that names signals, voltages, etc. that are on each pin of a  
connector or cable.  
Plenum cable –  
PLUGE –  
Cable having a covering that meets the UL specifications for resistance to fire.  
Picture line up generation equipment. The name of a test pattern that assists in  
properly setting picture black level. PLUGE can be part of many test patterns. The  
phrase and origination of the test signal are both credited to the BBC.  
Power (electrical) –  
Resolution –  
The dissipation of heat by passing a current through a resistance. Measured in  
Watts (W), it is expressed by Ohms law from the three variables: Voltage (E) and  
Current (I) and Resistance (R), i.e., P = I2xR, or, P = E2/R or P = ExI.  
The density of lines or dots for a given area that make up an image. Resolution  
determines the detail and quality in the image. A measure of the ability of a  
camera or video system to reproduce detail. A measure of the amount of detail  
that can be seen in an image. Often expressed as a number of pixels, but more  
correctly it is the bandwidth. We say that a sharp, clear picture has high  
resolution.  
RGB –  
Red, green, blue. The chrominance information in a video signal. The basic  
components of the color television system. They are also the primary colors of  
light in the additive color process.  
RGB video –  
A form of color video signal (red, green, blue) distinctly different from the  
composite color video used in standard television sets. RGB can be displayed  
only on an RGB monitor, which has a separate electron gun for each of these  
primary colors. Some color television sets use only one gun. RGB monitors are  
noted for their crisp, bright colors and high resolution.  
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Appendix B Reference and Glossary  
RS-232 –  
An Electronic Industries Association (EIA) serial digital interface standard  
specifying the characteristics of the communication path between two devices  
using D-type connectors. This standard is used for relatively short range  
communications and does not specify balanced control lines. A serial control  
standard with a set the number of conductors, data rate, word length and type of  
connector to be used. Also specifies component connection standards with regard  
to computer interface. Also called RS-232-C, which is the third version of the  
RS-232 standard, which is functionally identical to the CCITT V.24 standard.  
SECAM –  
Sequential Couleur Avec Memoiré, translated as Sequential Color with Memory.  
A composite color transmission system that potentially eliminates a need for both  
a color and hue control on the monitor. One of the color difference signals is  
transmitted on one line and the second is transmitted on the second line. Memory  
is required to get both color difference signals for color decoding. SECAM is used  
in France, Africa, Asia, Russia, Saudi Arabia and many Eastern European  
countries. Similar to PAL, but it produces color signals in a different manner. 625  
horizontal scan lines, 50 fields per second (625/50).  
Serial port –  
SMPTE –  
An input/output connection on the computer that allows it to communicate with  
other devices in a serial fashion data bits flowing on a single pair of wires. The  
serial port is used with RS-232 protocol.  
Society of Motion Picture and Television Engineers. A global organization, based  
in the United States, that sets standards for baseband visual communications.  
This includes film as well as video standards.  
SMPTE pattern –  
The video test pattern consisting of color, black and white bands used as a  
standard for setting up video equipment.  
Software –  
Switcher –  
The programs used to instruct a processor and its peripheral equipment.  
Term often used to describe a special effects generator, which allows the  
operator to switch between video camera signals. Switchers are often used in  
industrial applications to switch between video cameras monitoring certain areas  
for display on a monitor or system of display devices.  
Sync –  
In video, a means of synchronizing signals with timing pulses to insure that each  
step in a process occurs at exactly the right time. For example, horizontal sync  
determines exactly when to begin each horizontal line (sweep) of the electron  
beam. Vertical sync determines when to bring the electron beam to the top-left of  
the screen to start a new field. There are many other types of sync in a video  
system. (Also called sync signal or sync pulse.)  
S-VHS –  
S-video –  
Super-Video Home System. A high band video recording process for VHS that  
increases the picture quality and resolution capability. See S-Video.  
The composite video signal is separated into the Luminance (Y; black and white)  
and the Chrominance (C; color).  
Terminal –  
A device, typically having a keyboard and display, that is capable of sending text  
to and receiving text from another device, a network, etc.  
Termination –  
A load, or impedance, at the end of a cable or signal line used to match the  
impedance of the equipment that generated the signal. The impedance absorbs  
signal energy to prevent signal reflections from going back toward the source. For  
video signals, termination impedance is typically 75 ohms.  
Vertical interval –  
Z –  
The synchronizing information that is presented between fields, and then signals  
the picture monitor to return to the top of the screen to start another vertical scan.  
A symbol for impedance.  
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Reference and Glossary Appendix B  
RS-232  
E
and control device A-1  
and control priorities 3-4  
and front panel LEDs 3-5  
defined B-6  
feature 1-3  
serial comm port 4-1  
Index  
Executive mode  
Windows control panel 4-2  
A
H
H. shift  
same as horizontal shift  
Horizontal shift  
Adjustments  
from front panel 3-4  
warning (making too soon) 3-4  
S
Attenuation  
from front panel 3-4  
Scan rate  
stored for video input 1-2  
audio/video level 1-3  
RS-232 programming A-2  
defined B-2  
Audio follow  
feature 1-3  
I
Serration pulses  
rear panel switch 3-5  
Show Me  
Installation cable  
how to use 2-4  
L
front panel indicators 3-3  
defined B-2  
buffer feature 1-1, 1-5, 3-2  
interacts with RGB 320 3-1  
LCD display (front panel)  
adjustment levels 3-4  
scan rates 3-1  
Audio level  
features 1-2, 1-5  
SOG  
See sync on green  
from RS-232 control A-2  
operation from buffer 3-1  
operation from RGB 320 3-4  
operation from software 4-2  
LCD display (projectors)  
see LCD sync 3-5  
Sync  
BNC connectors 2-2  
defined B-6  
feature - digital processing 1-3  
LCD sync  
rear panel switch 3-5  
Sync on green  
rear panel switch 3-5  
Line doubler/line quadrupler  
used with RGB 320 2-1  
B
Boost  
Sync options  
rear panel switches 3-5  
video level 1-2  
M
Breakaway  
Memory blocks  
feature 1-3  
T
feature 1-2  
function/description 3-1  
clearing for input channel 3-1  
from front panel 3-3  
from Windows software 4-2  
from buffer panel 3-2  
separate control 3-4  
defined B-2  
Termination  
defined B-6  
switch on buffers 1-2  
Mode (audio/video)  
see breakaway  
V
V. shift  
same as vertical shift  
Buffers (input-  
N
RGB 322/324/326/340)  
features 1-1, 1-5  
overview 3-2  
priority over RGB 320 panel 3-4  
also see 68-338-01 users manual  
Negative sync  
rear panel switch 3-5  
Vertical shift  
front panel control 3-4  
Normal Windows control panel  
Windows software 4-2  
Vertical sync pulse  
width control switch 3-5  
P
Video level  
feature 1-2  
front panel control 3-4  
C
Cables  
Peaking  
how to use rear panel switch 3-5  
Program group  
choosing 2-4  
also see 68-338-01 users manual  
Virtual interfacing  
feature 1-2  
from input buffer 1-5  
Windows 3.1 software 4-1  
Communication  
serial/RS-232 control 4-1  
R
Contact closure  
W
Wall plate  
buffer mounting 1-5  
Remote control  
Contact closure A-1  
RS-232 A-1  
Remote control A-1  
D
RGB 320 help  
Windows  
software control program 4-1  
Diagnostic  
Windows software 4-3  
panel LEDs 3-5  
RGB 32/3404  
features 1-5  
DLP display (projectors)  
see LCD sync 3-5  
B-7  
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FCC Class A Notice  
Note: This equipment has been tested and found to comply with the limits for a Class A digital  
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable  
protection against harmful interference when the equipment is operated in a commercial  
environment. This equipment generates, uses and can radiate radio frequency energy and, if not  
installed and used in accordance with the instruction manual, may cause harmful interference to  
radio communications. Operation of this equipment in a residential area is likely to cause harmful  
interference, in which case the user will be required to correct the interference at his own expense.  
Note: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be  
used with the unit to ensure compliance.  
Extron’s Warranty  
Extron Electronics warrants this product against defects in materials and workmanship for a period  
of two years from the date of purchase. In the event of malfunction during the warranty period  
attributable directly to faulty workmanship and/or materials, Extron Electronics will, at its option,  
repair or replace said products or components, to whatever extent it shall deem necessary to restore  
said product to proper operating condition, provided that it is returned within the warranty period,  
with proof of purchase and description of malfunction to:  
USA, Canada, South  
America, Central  
Europe, Africa, and the  
Middle East:  
America, and Asia:  
Extron Electronics, Europe  
Beeldschermweg 6C  
3821 AH Amersfoort  
The Netherlands  
Extron Electronics  
1230 South Lewis Street  
Anaheim, CA 92805, U.S.A.  
This Limited Warranty does not apply if the fault has been caused by misuse, improper handling  
care, electrical or mechanical abuse, abnormal operating conditions or non-Extron authorized  
modification to the product.  
If it has been determined that the product is defective, please call Extron and ask for an Applications  
Engineerat(714)491-1500(USA),31.33.453.4040(Europe),or65.226.0015(Asia)toreceiveanRA#(Return  
Authorization number). This will begin the repair process as quickly as possible.  
Units must be returned insured, with shipping charges prepaid. If not insured, you assume the risk  
of loss or damage during shipment. Returned units must include the serial number and a  
description of the problem, as well as the name of the person to contact in case there are any  
questions.  
Extron Electronics makes no further warranties either expressed or implied with respect to the  
product and its quality, performance, merchantability, or fitness for any particular use. In no event  
will Extron Electronics be liable for direct, indirect, or consequential damages resulting from any  
defect in this product even if Extron Electronics has been advised of such damage.  
Please note that laws vary from state to state and country to country, and that some provisions of  
this warranty may not apply to you.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
EXTRON ELECTRONICS, EUROPE  
Beeldschermweg 6C, 3821 AH Amersfoort  
+31.33.453.4040 FAX +31.33.453.4050  
The Netherlands  
EXTRON ELECTRONICS, ASIA  
41B Kreta Ayer Road, Singapore 089003  
+65.226.0015 FAX +65.226.0019  
Singapore  
EXTRON ELECTRONIC INFORMATION  
EXTRONFAX™: 714.491.0192  
EXTRON ELECTRONICS/RGB SYSTEMS, INC.  
1230 South Lewis Street, Anaheim, CA 92805  
800.633.9876 714.491.1500 FAX 714.491.1517  
U.S.A.  
24-hour access—worldwide!  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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