Extron electronic Switch SW8 12 VGA User Manual

SW8 VGA Ars  
SW12 VGA Ars  
SW8/12 VGA Ars  
Computer Video and Audio Switchers  
68-1513-01 Rev. B  
03 09  
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FCC Class A Notice  
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. Operation is subject to  
the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference  
that may cause undesired operation. The Class A 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.  
This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used with the unit to ensure compliance with FCC emissions limits.  
N
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Table of Contents  
SW8/12 VGA Ars • Table of Contents  
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i
SW8/12 VGA Ars  
Chapter One  
1
Introduction  
About This Manual  
About the SW8/12 VGA Ars Switchers  
Features  
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Introduction  
About This Manual  
This manual describes the function, installation, operation, and control of the  
SW8 VGA Ars and SW12 VGA Ars, 8- or 12-input, 2-output, computer video (VGA)  
and audio switchers.  
About the SW8/12 VGA Ars Switchers  
The Extron SW8/12 VGA Ars switchers support audio video (A/V) systems that  
require 8 or 12 high resolution VGA-QXGA video and audio inputs to be switched  
to 1 or 2 outputs.  
Video and audio outputs are buffered. Selected input signals are delivered to both  
video outputs and both audio outputs simultaneously.  
8 ohm Ceiling  
Speakers  
in Parallel  
Extron  
MPA 122  
Mini Power  
A
122  
MP  
Amplifier  
OUTPUTS  
R
4/8 Ohms SPEAKERS  
L
US  
C
TE  
REMO  
INPUTS  
10V  
OL/MUTE  
V
R
L
L
WER  
PO  
R
s
Ar  
A
G
V
SW12  
RS-232  
E
ARIABL  
R
V
L
1
2
FIXED  
R
L
O
U
T
11  
P
U
T
12  
S
System Control  
9
10  
7
8
5
6
3
4
1
2
I
z
N
P
U
T
100-240V  
S
X
1.2A MA  
Extron  
SW12 VGA Ars  
VGA w/ Audio  
Switcher  
Projector  
Local  
Monitor  
ME  
ME  
W
O
W
O
SH  
SH  
I
UDIO  
UDIO  
A
E
AAP  
E
C
AAP  
I
A
C
A
A
INTERF  
INTERF  
R
R
COM
COM
Extron  
VSW I AAP  
Architechtural Adapter Plate  
Extron  
VSW I AAP  
Architechtural Adapter Plate  
Laptop  
Laptop  
Figure 1-1 A typical SW12 VGA Ars switcher application  
SW8/12 VGA Ars • Introduction  
1-2  
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Features  
SW8/12 VGA Ars switcher features include:  
8 or 12 video inputs with 15-pin HD connectors  
8 or 12 3.5 mm stereo mini jacks for audio  
Two 15-pin HD output connectors for video  
Two captive screw output connectors for audio  
Compatible with VGA-QXGA and HDTV component video signals  
350 MHz (-3 dB) RGB video bandwidth  
Automatically detects which inputs have an active signal and reports this  
information through the RS-232 port  
Balanced / unbalanced audio outputs  
Variable / fixed audio outputs  
Autoswitching capabilities  
Executive mode (front panel lockout)  
Multiple control options — front panel, autoswitch, RS-232, IR via IR 102  
VSW I AAP compatibility  
Internal international power supply  
Multiple mounting options — rack, under desk, through desk, tabletop  
SW8/12 VGA Ars • Introduction  
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1-3  
 
Introduction, cont’d  
SW8/12 VGA Ars • Introduction  
1-4  
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SW8/12 VGA Ars  
Chapter Two  
2
Installation and Operation  
Mounting the SW8/12 VGA Ars Switcher  
Rear Panel  
Cable Connections  
Front Panel  
Operating the SW8/12 VGA Ars Switchers  
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Installation and Operation  
Mounting the SW8/12 VGA Ars Switcher  
The SW8/12 VGA Ars can be placed on a desktop or easily mounted:  
In a rack  
Under a desktop  
Through a desktop  
Desktop placement  
Affix the four included rubber feet to the bottom of the unit and place it in any  
convenient location.  
Rack mounting  
UL guidelines for rack mounting  
The following Underwriters Laboratories (UL) guidelines pertain to the installation  
of an SW8/12 VGA Ars switcher unit onto a rack.  
1.  
Elevated operating ambient — If installed in a closed or multi-unit rack  
assembly, the operating ambient temperature of the rack environment may be  
greater than room ambient. Therefore, consider installing the equipment in an  
environment compatible with the maximum ambient temperature specified  
by Extron (Tma = +32 to +122 °F [0 to +50 °C]).  
2.  
Reduced air flow — Installation of the equipment in a rack should be such  
that the amount of air flow required for safe operation of the equipment is not  
compromised.  
3.  
4.  
Mechanical loading — Mounting of the equipment in the rack should be such  
that a hazardous condition is not achieved due to uneven mechanical loading.  
Circuit overloading — Consideration should be given to the connection of the  
equipment to the supply circuit and the effect that overloading of the circuits  
might have on overcurrent protection and supply wiring. Appropriate  
consideration of equipment nameplate ratings should be used when  
addressing this concern.  
5.  
Reliable earthing (grounding) — Reliable earthing of rack-mounted  
equipment should be maintained. Particular attention should be given to  
supply connections other than direct connections to the branch circuit (such as  
the use of power strips).  
SW8/12 VGA Ars • Installation and Operation  
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Mounting instructions  
Rack mounting requires the included MBD 149 1U, through-desk and rack  
mounting kit (part #70-077-03).  
Rack mount an SW8/12 VGA Ars unit as follows:  
1.  
2.  
If present, remove the four rubber feet from the bottom of the unit.  
Use four supplied 8-32 x 5/16" long screws to secure a mounting bracket to  
each side of the unit (figure 2-1).  
3.  
Use four supplied 10-32 x 3/4" long screws to secure the bracket to the rail.  
Mounting  
Screws  
Rack Mount  
Bracket  
Mounting  
Bracket  
Screws  
Screws  
Figure 2-1 Rack mounting the switcher  
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2-3  
 
Installation and Operation, cont’d  
Mounting under a desktop  
Under-desk mounting requires the optional MBU 149 1U, under-desk mounting kit  
(part #70-222-01).  
Mount an SW8/12 VGA Ars under a desktop as follows:  
1.  
2.  
3.  
4.  
5.  
Install the mounting brackets on the unit’s sides with the eight machine  
screws provided in the kit.  
Hold the unit (with brackets attached) against the underside of the desk.  
Mark each bracket's hole location on the underside of the desk.  
Drill 1/4" (6.4 mm) deep, 3/32" (2 mm) diameter pilot holes from the  
underside of the desk at the marked hole locations.  
Insert the four wood screws into the pilot holes and tighten until  
approximately 1/4" (6.4 mm) of the screw's head is protruding.  
Install the mounting brackets, with the unit attached, over the protruding  
screw heads.  
6.  
7.  
Slide the unit slightly to lock it in place.  
Tighten all four screws to secure it in place.  
Mounting Screws  
(2 Plcs)  
Each Side  
#8 Screw  
(4 Plcs)  
Each Side  
Optional Furniture Mounting Bracket  
Figure 2-2 Mounting the switcher under a desktop  
SW8/12 VGA Ars • Installation and Operation  
2-4  
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Mounting through a desktop  
Through desktop mounting requires the included MBD 149 1U, through-desk and  
rack mounting kit (part #70-077-03).  
Mount an SW8/12 VGA Ars unit through a desktop as follows:  
1.  
2.  
3.  
If present, remove the four rubber feet from the bottom of the unit.  
Cut an appropriately sized hole in the desktop.  
Loosely install the mounting brackets on the unit’s sides with four machine  
screws provided in the kit.  
4.  
5.  
6.  
7.  
8.  
9.  
Hold the unit (with brackets attached) against the underside of the desk.  
Mark each bracket's hole location on the underside of the desk.  
Drill 1/4" (6.4 mm) deep, 3/32" (2 mm) diameter pilot holes from the  
underside of the desk at the marked hole locations.  
Hold the unit in place so the mounting bracket holes line up with the pilot  
holes in the desktop.  
Install the four supplied wood screws through the mounting brackets and into  
the pilot holes.  
Tighten the wood screws to secure the mounting brackets to the underside of  
the desktop.  
Slide the switcher up or down inside the mounting brackets to achieve the  
desired height above the desktop.  
10. Tighten the machine screws to secure the switcher in position.  
Figure 2-3 Mounting the switcher through a desktop  
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2-5  
 
Installation and Operation, cont’d  
Rear Panel  
The SW8/12 VGA Ars switcher rear panel connectors are described below.  
1
2
3
4
5
6
7
100-240V  
50/60Hz  
O
U
T
P
U
T
I
1
2
3
4
5
6
7
8
1
2
SW8 VGA Ars  
RS-232  
N
P
U
T
S
FIXED  
VARIABLE  
L
R
L
R
S
1.2A MAX  
Figure 2-4 SW8 VGA Ars rear panel  
1
2
3
4
5
6
7
100-240V  
50/60Hz  
O
U
T
P
U
T
I
1
2
3
4
5
6
7
8
9
11  
12  
1
2
SW12 VGA Ars  
RS-232  
N
P
U
T
S
FIXED  
VARIABLE  
L
R
L
R
10  
S
1.2A MAX  
Figure 2-5 SW12 VGA Ars rear panel  
AC power receptacle — Plug a standard IEC power cord into this receptacle  
a
b
to connect the switcher to a 120/240 VAC, 50/60 Hz power source.  
Computer video input connectors — 8 or 12 15-pin HD female connectors.  
Connect computer video inputs (VGA, SVGA, XGA, SXGA, WXGA, SXGA+,  
UXGA, QXGA, or HDTV).  
Audio input connectors — Eight or twelve 3.5mm TRS jacks. Connect  
c
d
e
f
unbalanced audio inputs.  
Video output connectors — Two 15-pin HD female connectors deliver  
simultaneous buffered video output.  
Fixed audio output connector — One 3.5mm 5-pole captive screw connector  
delivers a fixed volume stereo balanced/unbalanced audio output.  
Variable audio output connector — One 3.5mm 5-pole captive screw  
connector delivers a variablevolume stereo balanced/unbalanced audio  
output. Volume is variable via the RS-232 control port. The volume  
adjustment range is 0 (-84 dB) through 100 (0 db). The default volume setting  
is 100 (0 dB).  
RS-232 Control port — A 9-pin D female connector for serial connection to a  
PC or controller.  
g
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Cable Connections  
Power connection  
When you are ready to apply power to your SW8/12 VGA Ars unit, connect the  
female end of the power cord to the AC outlet at the left edge of the rear panel,  
and connect the male end of the power cord to a 120/240 VAC power outlet.  
When power is applied all front panel LEDs light for one second, then go out.  
The LED for the previously selected input then comes on and remains lit until the  
current input is de-selected.  
100-240V  
50/60Hz  
I
1
2
3
4
N
P
U
T
S
1.2A MAX  
Power connector  
Figure 2-6 Power connector  
Computer video input connections  
Depending on the model (SW8 or SW12) there are 8 or 12 video input ports on the  
rear panel.  
Each 15-pin HD female connector supports computer video signals with resolutions  
from VGA - QXGA and HDTV signals.  
10  
5
1
6
15  
11  
Female  
Figure 2-7 Video input connectors  
SW8/12 VGA Ars switchers monitor each input port for the presence of a  
horizontal sync pulse, which indicates the presence of a video signal. When  
detected, the video signal’s presence is reported on the switcher’s RS-232 control  
port. See chapter 3, “Operation and Control” for information on the Simple  
Instruction Set (SIS) commands which can be used to communicate through the  
RS-232 port.  
The SIS command 0S requests the switcher to report the status of all inputs at once.  
The SIS command xS requests the status of specific port “x”.  
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Installation and Operation, cont’d  
Audio input connections  
The switchers have 8 or 12 3.5mm female audio jacks adjacent to the corresponding  
computer video input port.  
Pin  
Name  
Connection  
3.5mm Stereo Connector  
Tip (L+)  
Sleeve (Gnd)  
1
Tip  
left channel  
2
Ring  
right channel  
signal ground  
Ring (R+)  
Tip (L+)  
3
Sleeve  
Sleeve (Gnd)  
100-240V  
50/60Hz  
I
1
2
3
4
N
P
U
T
S
Audio input ports  
1.2A MAX  
Figure 2-8 Audio input ports  
Video output connections  
The SW8/12 VGA Ars switchers have two output ports that provide simultaneous,  
buffered video output of the selected video input signal.  
Outputs are delivered on two 15-pin HD female connectors (identical to the input  
connectors). The output signal type follows the input signal type.  
10  
5
1
6
15  
11  
Female  
Figure 2-9 Video output connectors  
ID bits associated with pins 4, 11, 12, and 15 are routed from the input 1 to output 1.  
The output device must be powered on prior to the input device for the ID bits to  
be properly routed to the output device.  
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Audio output connections  
The switcher have two 3.5mm 5-pole captive screw audio output ports.  
The Fixed port delivers a fixed volume, stereo balanced/unbalanced audio output.  
The Variable port delivers a variable volume, stereo balanced/unbalanced audio  
output. The volume range is 0 (-84 dB) through 100 (0 dB). The default volume  
setting is 100 (0 dB). Volume is controllable only via the RS-232 port.  
O
1
SW12 VGA Ars  
U
T
P
U
T
S
FIXED  
VARIABLE  
RS-232  
L
R
L
R
2
Audio output ports  
Figure 2-10 Audio output ports  
Wire the captive screw connectors as shown below.  
Connect the sleeve to ground (_). Connecting the sleeve to a  
negative (-) terminal will damage the audio output circuits.  
C
Tip  
Tip  
Ring  
NO GROUND HERE.  
Sleeve(s)  
Tip  
Tip  
NO GROUND HERE.  
Ring  
Unbalanced  
Stereo Output  
Balanced  
Stereo Output  
Do not tin the wires!  
Figure 2-11 Captive screw connectors  
A balanced audio output provides a +6 dB gain. An unbalanced audio output  
provides a 0 dB gain.  
N
Remote control connection  
An RS-232 serial control port at the right edge of the rear panel is used for computer  
or infrared (IR) remote control of the device. The switcher’s firmware can be  
upgraded through the RS-232 port. See chapter 3, “Operation and Control”.  
The RS-232 port communications protocols are: 9600 baud, 8 data bits, 1 stop bit,  
no parity, and no flow control.  
IR remote control requires use of the IR 102 Remote Control Kit (part #70-224-01)  
For computer or infrared remote control, only pins 2 (transmit data), 3 (receive  
data), and 5 (ground) are required. Disconnect all other conductors in the  
attachment cable for proper operation.  
5
1
O
U
T
P
U
T
1
2
SW12 VGA Ars  
FIXED  
VARIABLE  
RS-232  
L
R
L
R
9
6
DB9 Pin Locations  
Female  
S
RS-232 control port  
Figure 2-12 RS-232 control port  
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Installation and Operation, cont’d  
VSW I AAP connection  
The VSW I AAP (part #70-529-11, -21, -51) is an optional Architectural Adapter Plate  
that provides remote input connection and selection for some Extron switchers.  
The VSW I AAP can be connected to the SW8/12 VGA Ars input ports for input  
selection control.  
The VSW I AAP is equipped with a “Show Me” button for input selection, a female  
15-pin HD VGA connector, and a 3.5 mm stereo audio jack.  
SHOW ME  
AUDIO  
VSW I AAP  
COMPUTER  
Figure 2-13 VSW I AAP  
When the “Show Me” button is pressed, pin 5 on the switcher’s 15-pin HD input  
is momentarily shorted to ground. This overrides the switcher’s current input  
selection, and directs video and audio from the VSW I AAP’s connected device to  
the switcher’s output ports.  
For the VSW I AAP to operate with a switcher, the VSW I AAP PCB jumper must be  
set properly, and the switcher must be configured via its RS-232 control port.  
The VSW I AAP can be mounted into any Extron mounting frame with a single  
space AAP opening.  
The illustration on the following page shows a typical SW8 VGA Ars switcher  
application with four VSW I AAP units connected to the switcher’s input ports.  
To use a VSW I AAP with a switcher:  
1.  
Confirm that jumper J5 is removed and jumper J6 is in place on the  
VSW I AAP’s printed circuit board.  
J5  
J6  
Figure 2-14 — VSW I AAP jumpers  
2.  
3.  
4.  
Apply power to the switcher.  
Connect a host computer to the switcher’s RS-232 control port.  
Open a hyperterminal session on the host computer, and use a Simple  
Instruction Set (SIS) command to configure the switcher to operate with a  
VSW I AAP (see chapter 3, “Operation and Control”).  
5.  
Connect a VGA cable from the VSW I AAP’s output connector (on the rear of  
the unit) to one of the switcher’s input ports.  
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6.  
Connect a VGA cable from an input device to the Computer input port on the  
front of the VSW I AAP.  
7.  
8.  
Apply power to the display device, the switcher, and then the input source.  
Press the “Show Me” button on the VSW I AAP. The video input to the  
VSW I AAP is directed to the switcher’s output ports and should now be  
present on the display device.  
9.  
If desired, connect an audio input to the VSW I AAP, and use the “Show Me“  
button to test its output to the system’s audio output device.  
2
12  
S
M
U
T
R
S
T
P
A
K
E
P
E
S
R
4
US  
C
T
E
O
TS  
PU  
IN  
REM  
V
/
1
L
V
O
R
L
L
E  
O  
R
2
X
A  
Extron  
MPA 122  
SHOW ME  
AUDIO  
VSW I AAP  
COMPUTER  
Extron  
VSW I AAP  
125  
-
/0  
H
HSA  
400  
H
.
S
H
I
ELEC  
IFT  
S
PUT  
T
C
OMP  
A
DI  
T
R
RG  
B
58  
0xi  
SI  
AP  
125  
-
50  
/6  
0
H
z
5
125  
-
50/60  
H
z
5
A
HSA  
400  
H
.
S
H
I
F
T
S
INPUT  
ELEC  
T
P  
A
UDI  
O
T
R
RG  
B
5
HSA 400  
S
AP  
CO  
M
PUTE  
R
125  
-
50/60  
H
z
5
A
HSA  
400  
H
.
S
H
IFT  
S
INPUT  
ELEC  
T
C
OMP  
A
UD  
IO  
UTE  
R
RG  
B
5
80x  
i
AP  
Extron  
HSA 400  
125  
-
50/60  
H
z
5
A
HSA  
400  
H
.
S
H
IN  
ELEC  
IFT  
S
U
U
UE  
RG  
B
i
AP  
Conference Room  
s
Ar  
A
G
V
SW8  
232  
RS-  
E
IABL  
R
A
R
V
L
1
2
D
FIXE  
R
L
O
U
T
P
U
T
S
7
8
5
6
3
4
1
2
I
z
50/60H  
N
P
U
T
-240V  
100  
S
Extron  
SW8 VGA Ars  
AX  
1.2A  
M
Figure 2-15 A typical switcher application with VSW I AAP units  
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2-11  
Installation and Operation, cont’d  
IR 102 remote control connection  
The SW8/12 VGA Ars switcher can be controlled via its RS-232 port and an infrared  
signal. The IR 102 Remote Control Kit (part #70-224-01) is required.  
To connect an IR 102 Receiver to an SW8/12 VGA Ars switcher:  
1.  
Connect a 9-pin serial cable, with only conductors 2, 3, and 5 connected, to the  
RS-232 output port on the IR 102 receiver.  
2.  
Connect the serial cable to the RS-232 port on the switcher’s rear panel.  
SW12 VGA Ars Switcher  
100-240V  
50/60Hz  
O
I
1
2
3
4
5
6
7
8
9
11  
1
SW12 VArs  
RS-232  
U
T
P
U
T
S
N
P
U
T
S
Power  
Supply  
FIXED  
VARIABLE  
L
R
L
R
10  
12  
2
1.2A MAX  
6.5' Cable  
6' Cable  
IR-102  
IR 102 Remote  
Control Receiver  
IR Detector  
IR 102 Remote Control  
RS-232  
Control  
Figure 2-16 — A typical switcher application w/IR 102 remote control  
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Front Panel  
The SW8/12 VGA Ars switcher front panel controls are described below.  
1
2
1
2
3
4
5
6
7
8
AUTO SWITCH  
ACTIVE  
MODE  
NORMAL  
AUTO  
SW8 VGA Ars  
3
4
5
Figure 2-17 — SW8 VGA Ars front panel  
1
2
1
2
3
4
5
6
7
8
9
10  
11  
12  
AUTO SWITCH  
ACTIVE  
MODE  
NORMAL  
AUTO  
SW 12 VGA Ars  
3
4
5
Figure 2-18 — SW12 VGA Ars front panel  
Auto switch active LED — Lights when the auto switch mode is enabled.  
a
b
Input buttons and LEDs— Depending on the model there are eight or twelve  
input buttons and corresponding LEDs. To select an input, press the desired  
input button. The adjacent LED lights.  
Mode (Input 1) button The Mode button functions in conjunction with  
other buttons as shown in the table below. Mode is a secondary function of  
the Input 1 button.  
c
Hold  
Press  
Description and Result  
Mode  
Normal  
Enable Normal mode — Front panel input buttons operate normally.  
Auto Switch Active LED is off.  
Mode  
Auto  
Enable Auto switch mode — Front panel input buttons are locked out.  
Switcher outputs highest number input that has a sync signal present. If  
no sync signal is present, input #1 is selected by default.  
Auto Switch Active LED is on.  
Mode  
Input button  
#4 for 3 sec.  
Enable/disable Executive mode — All LEDs flash 3 times. All front panel  
input buttons are locked out. Attempts to select an input button causes  
all LEDs to flash.  
Input selections via RS-232 and VSW IAAP still function.  
Disable Executive mode — All LEDs flash three times, and the front  
panel input buttons return to operation.  
Mode - while applying  
Perform factory reset — Reset unit to its factory settings.  
power  
Normal (Input 2) button — Hold Mode and press Normal to have the front  
panel input buttons operate in manual mode - press an input button to select  
an input signal.  
d
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2-13  
   
Installation and Operation, cont’d  
Auto (Input 3) button — Hold Mode and press Auto to lock out the front  
e
panel input buttons and have the switcher select the highest number input  
with a sync signal present as its output. If no sync signal is present, input #1  
is selected by default.  
Operating the SW8/12 VGA Ars Switchers  
After power-on the following operations are available:  
Video / audio input selection — Press an input selection button to send the  
connected video and audio input signals to the output devices. When an input is  
selected, the adjacent LED lights.  
The SW8 VGA Ars has 8 input selection buttons.  
The SW12 VGA Ars has 12 input selection buttons.  
Mode selection — See the front panel descriptions on the previous page.  
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SW8/12 VGA Ars  
Chapter Three  
3
Control  
Remote control via Simple Instruction Set (SIS)  
Updating Firmware  
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Control  
Remote Control via Simple Instruction Set (SIS)  
The SW8/12 VGA Ars switchers can be controlled via RS-232 using Extron’s Simple  
Instruction Set (SIS) commands.  
The RS-232 port communications protocols are: 9600 baud, 8 data bits, 1 stop bit,  
no parity, and no flow control. Cable pinouts are shown in the table below.  
Only pins 2, 3, and 5 are required. Disconnect all other conductors in the  
attachment cable for proper operation.  
Pin  
1
RS-232  
Description  
RS-232 Control Port Connector  
2
Tx  
Transmit data  
3
Rx  
Receive data  
5
1
4
5
Gnd  
Signal ground  
9
6
6
DB9 Pin Locations  
Female  
7
8
9
Rules governing SIS commands include:  
SIS commands consist of one or more characters per field.  
No special characters are required to begin or end a command sequence.  
When a command is valid, the switcher executes the command and sends a  
response to the host device.  
All responses from the switcher to the host end with a carriage return and a  
line feed (CR/LF = ), which signals the end of a response character string.  
]
A string is one or more characters.  
Switcher-initiated (unsolicited) messages  
When a local event, such as a front panel operation or error condition, occurs, the  
switcher responds by sending a message to the host. Switcher-initiated messages  
are listed below:  
]
(C) Copyright 2008, Extron Electronics SWy VGA Ars, Vx.xx  
The switcher issues the copyright message when it first powers on.  
y = the number of inputs (8 or 12, depending on the model)  
x.xx = the firmware version number  
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Error responses  
When the switcher receives a valid command, it executes the command and sends  
a response to the host device. If the unit is unable to execute the command because  
the command contains invalid parameters, it returns an error response to the host.  
Error response codes are:  
E01 — Invalid input channel number (out of range)  
E06 — Invalid input channel change (auto-switch mode active)  
E09 — Invalid function (mode) parameter  
E10 — Invalid command  
E13 — Invalid value (out of range)  
Timeout  
A pause of 10 seconds or longer between command ASCII characters results in a  
timeout. The command operation is aborted with no other indication.  
Using the command/response table  
The command/response table is on the following pages. Lowercase letters are  
allowed in the command field only as indicated. Symbols are used throughout  
the table to represent variables in the command/response fields. Command and  
response examples are shown throughout the table. The ASCII to HEX conversion  
table below is for use with the command/response table.  
ASCII to HEX Conversion Table  
Space  
Figure 3-1 ASCII-to-HEX conversion table  
Symbol definitions  
]
}
= CR/LF (carriage return/line feed)  
= Carriage return (no line feed)  
= Space character  
X!  
= Input number  
SW8 = 0 through 8  
SW12 = 0 through 12  
0 = output mute  
X@= Indicates signal presence  
0 = signal not present  
1 = signal is present  
X#  
= On/off status  
0 = off  
1 = on  
X$= Volume value/range  
X%  
0 - 100  
= Switch mode  
1 = normal mode  
2 = auto switch mode  
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Control, cont’d  
Command/Response Table for SIS commands  
Command  
ASCII (Telnet)  
Response  
Additional description  
(host to switcher) (switcher to host)  
Input Selection  
Select video and  
audio  
X!  
!
X! ]  
In All  
X!  
Select input video and audio.  
Select video only  
X!  
X!  
X! ]  
X! ]  
In Aud  
X!  
X!  
&
In Vid  
Select input  
Select input  
video only.  
audio only.  
Select audio only  
$
Auto Switch  
Normal switch mode 1#  
Set switch mode to normal.  
Set switch mode to auto.  
]
]
F1  
F2  
Auto switch mode  
2#  
0S  
0S  
Input video sensing  
Request all inputs’  
status  
X@ X@ X@]  
X@  
response is the signal status  
Sig•  
...  
Each  
X!  
from each input ’s signal status.  
Example: (SW8)  
The input signal is present on inputs  
1,2,3,4,6, and 7. No signal is present  
on inputs 5 and 8.  
]
Sig•1•1•1•1•0•1•1•0  
Request specific  
input’s status  
X!  
S
X@]  
X!  
X@  
’s signal status = .  
Video mute  
These commands mute and unmute both video outputs.  
N
Mute video  
1B/b  
0B/b  
B/b  
Video mute on.  
Video mute off.  
Video mute status.  
X#]  
X#]  
X#]  
Vmt  
Unmute video  
Read mute status  
Audio mute  
Vmt  
These commands mute and unmute both audio outputs.  
N
Mute audio  
1Z/z  
0Z/z  
Z/z  
Audio mute on.  
Audio mute off.  
Audio mute status.  
X#]  
X#]  
X#]  
Amt  
Unmute audio  
Amt  
Read mute status  
Output Volume Control (variable audio output)  
Set audio volume to  
a specific level  
X$  
V
X$]  
Vol  
Example:  
Sets output volume to 75.  
]
Vol75  
75V  
Increment volume  
Decrement volume  
View volume  
+V  
-V  
V
X$]  
X$]  
X$]  
Vol  
Vol  
VSW I AAP Compatibility Mode  
Enable/disable  
single input  
Enable/disable all  
inputs  
EX! X#  
}
X# X# X# X#]  
X!  
X#  
*
VSWE  
Vswe•  
......•  
is an input (1-8 or 1-12).  
E X#  
}
X# X# X# X#]  
Vswe• ......•  
0* VSWE  
is the enabled/disabled status  
from each input (0 = disabled,  
1 = enabled).  
View current status  
E
}
VSWE  
X# X# X# X#]  
Vswe• ......•  
Front panel lockout  
Turn front panel  
lockout on  
Turn front panel  
lockout off  
1X/x  
0X/x  
X/x  
Front panel lockout on.  
Front panel lockout off.  
Front panel lockout status.  
X#]  
Exe  
Exe  
X#]  
View front panel  
lockout status  
X#]  
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Command/Response Table for SIS commands (continued)  
Command  
ASCII (Telnet)  
Response  
Additional description  
(host to switcher) (switcher to host)  
View information, part number, and firmware requests  
Information request  
I/i  
X! X! X%  
X#  
X#]  
V
•A •F •Vmt •Amt  
Current video/audio selection/  
switch mode /mute status.  
x = part number  
Request part number N/n  
]
60-xxx-21  
Query firmware  
revision  
Q/q  
y.yy = firmware to two decimals  
]
y.yy  
Upload firmware  
Upload firmware  
“Upl” appears after the upload is  
complete.  
E
E
}
]
...go ... Upl  
Upload  
Reset  
Reset switcher to  
factory settings  
Reset audio output  
level  
}
]
]
zXXX  
Zpx  
Reset output volume to 100.  
E }  
zV  
Zpv  
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Control, cont’d  
Updating Firmware  
Firmware updates for the SW8/12 VGA Ars are available on the Extron Web site,  
www.extron.com. The Firmware Loader software is also available from the Extron  
site.  
Use the SIS “Q” command to determine the switcher’s current firmware level.  
Downloading the firmware  
To obtain the latest version of firmware for your SW8/12 VGA Ars switcher:  
1.  
Visit the Extron Web site, www.extron.com, click the Download tab, then click  
the Firmware link on the left sidebar menu.  
Figure 3-2 — Extron Web site Download Center  
2. On the Download Center screen, click the SW8/12 VGA Series Download link.  
Figure 3-3 SW8/12 VGA Ars firmware  
3. Complete the Personal Information form and click the Download button.  
Figure 3-4 Personal information form  
SW8/12 VGA Ars • Control  
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4.  
Follow the instructions on the rest of the download screens to save the  
executable firmware file to your computer. Note the folder to which you save  
the file.  
5.  
6.  
In the Windows Explorer or other file browser, locate the downloaded  
executable file, and double-click on it to open it.  
Follow the instructions on the Installation Wizard screens to install the new  
firmware on your computer. A Release Notes file, giving information on  
what has changed in the new firmware version, and a set of instructions for  
updating the firmware are also loaded.  
Loading the firmware to the switcher  
To load a new version of firmware to your SW8/12 VGA Ars switcher, use the  
Firmware Loader software. Your computer’s serial port must be connected to the  
switcher’s serial port. See chapter 2, “Installation,” for more information.  
1.  
Download the Firmware Loader installer executable file to your  
computer, as follows:  
a. On the Extron Web page, click the Download tab.  
b. On the Download Center page, click Software on the left sidebar menu.  
c. Locate the “Firmware Loader” line and click the Download link at the far  
right.  
d. Follow the instructions on the download screens to save the installer file  
to your computer.  
2.  
3.  
In the Windows Explorer or other file browser, locate the Firmware Loader  
executable file in your computer’s file system and double-click on it to open it.  
Follow the instructions on the Installation Wizard screens to install the  
Firmware Loader on your computer. Unless you specify otherwise, the  
installer program places the Firmware Loader file, “FWLoader.exe” at  
c:\Program Files\Extron\FWLoader  
(If the Extron and FWLoader folders do not yet exist in your Program Files  
folder, the installer creates them.)  
4.  
Access the FWLoader.exe file via your desktop Start menu by making the  
following selections:  
Start > All Programs > Extron Electronics > Firmware Loader >  
Firmware Loader  
5.  
On the first screen that appears, select the RS-232 tab.  
Although the screen also has a TCP/IP tab, the switcher does not have a LAN  
port. Do not select the TCP/IP tab.  
N
6.  
From the drop-down menus on the RS-232 screen, select the appropriate Com  
port number (obtained from your system administrator) and baud rate (the  
default is 9600). (The Device selection is optional.)  
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Control, cont’d  
Figure 3-5 Extron firmware loader screen  
7.  
Click OK. The firmware selection screen appears.  
8.  
On the firmware selection screen, click Browse to open the Choose Firmware  
File window, and locate the firmware file that you downloaded. (By default,  
the firmware file is placed at c: Program Files\Extron\Firmware\SW when  
downloaded from the Extron Web site, www.extron.com.)  
The firmware file must have a .s19 extension. Uploading any other file  
type could cause the switcher to stop functioning.  
C
Figure 3-6 Choose firmware file screen  
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9.  
On the Choose Firmware File window, double-click on the new firmware  
file to open it. The Choose Firmware File window closes, and the path to the  
selected firmware file is displayed in the “Select a firmware file” field on the  
firmware file selection screen.  
Figure 3-7 Extrons rmware loader screen  
10. Click the Upload button. A status bar, which shows the progress of the  
upload, appears in the Firmware Loader window. The firmware upload to the  
switcher may take several minutes. Once the status bar has progressed fully  
from left to right, the firmware loader utility resets the switcher.  
In addition, messages appear on the firmware file selection window indicating  
when the unit is uploading the firmware, then resetting itself.  
When the firmware upload process is completed, the message “Transfer  
Complete!” is displayed, and the new firmware version number appears in  
the Current Unit Information field.  
11. Click Exit to close the Firmware Loader.  
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Control, cont’d  
SW8/12 VGA Ars • Control  
3-10  
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SW8/12 VGA Ars  
Appendix A  
A
Specifications, Part Numbers,  
Accessories  
Specifications  
Part Numbers and Accessories  
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Specifications, Part Numbers, Accessories  
Specifications  
Video  
Gain................................................. Unity  
Bandwidth...................................... 350 MHz (-3 dB)  
Crosstalk......................................... -68 dB @ 10 MHz  
Video input  
Number/signal type..................... 8 or 12 (depending on the model) VGA-QXGA RGBHV, RGBS, RGsB,  
RsGsBs computer video, and HDTV component video  
Connectors ..................................... 8 or 12 female 15-pin HD  
Nominal level ................................ 1.0 Vp-p for Y of component video  
0.7 Vp-p for RGB and for R-Y and B-Y of component video  
Minimum/maximum levels........ Analog: 0.3 V to 1.5 Vp-p with no offset  
Impedance...................................... 75 ohms  
Horizontal frequency.................... 15 kHz to 145 kHz  
Vertical frequency.......................... 30 Hz to 170 Hz  
Return loss...................................... -40 dB @ 5 MHz  
Input coupling............................... DC  
Video output  
Number/signal type..................... 2 VGA-QXGA RGBHV, RGBS, RGsB, RsGsBs computer video, and HDTV  
component video (follows input type)  
Connectors ..................................... 2 female 15-pin HD  
Nominal level ................................ 1.0 Vp-p for Y of component video  
0.7 Vp-p for RGB and for R-Y and B-Y of component video  
Minimum/maximum levels........ 0.3 V to 1.5 Vp-p (follows input)  
Impedance...................................... 75 ohms  
Return loss...................................... -43 dB @ 5 MHz  
DC offset......................................... ±5 mV with input at 0 offset  
Sync  
Input type....................................... RGBHV, RGBS, RGsB, RsGsBs, bi-level and tri-level sync  
Output type.................................... RGBHV, RGBS, RGsB, RsGsBs, bi-level and tri-level sync (follows input)  
Input level ...................................... 1.0 V to 5.0 Vp-p  
Output level................................... TTL: 5.0 Vp-p, unterminated  
Input impedance ........................... 510 ohms  
Output impedance........................ 75 ohms  
Max. propagation delay  
SW2/4/6 VGA Series ....... 47 ns  
SW8/12 VGA Series.......... 54 ns  
Max. rise/fall time  
SW2/4/6 VGA Series ....... 4.2 ns  
SW8/12 VGA Series.......... 4.7 ns  
Polarity............................................ Positive or negative (follows input)  
SW8/12 VGA Ars • Specifications, Part Numbers, Accessories  
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Audio  
Gain................................................. Unbalanced output: +0 dB; balanced output: +6 dB  
Frequency response ...................... 20 Hz to 20 kHz, ±0.05 dB  
THD + Noise.................................. 0.01% @ 1 kHz at nominal level  
S/N.................................................. >90 dB at maximum output (unweighted)  
Crosstalk......................................... -45 dB @ 1 kHz, fully loaded  
Stereo channel separation ............ >80 dB 1 kHz  
Audio input  
Number/signal type..................... 8 or 12 (depending on the model) stereo, unbalanced  
Connectors ..................................... 8 or 12 (depending on the model) 3.5 mm female stereo mini jacks; tip (L),  
ring (R), sleeve (Gnd)  
Impedance...................................... >10k ohms unbalanced, DC coupled  
Nominal level ................................ -10 dBV (316 mV)  
Maximum level.............................. +14 dBV, (unbalanced) at 1% THD+N  
0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV 2 dBu  
N
Audio output  
Number/signal type..................... 2 stereo, balanced/unbalanced  
Connectors ..................................... (2) 3.5 mm captive screw connectors, 5 pole  
Impedance...................................... 50 ohms unbalanced, 100 ohms balanced  
Nominal level ................................ +4 dBu (1.23 Vrms), balanced  
-10 dBV (316 mVrms), unbalanced  
Variable output’s volume range.. 0 to 100 (-84 dB to 0 dB), default = 100 = 0 dB  
Gain error ....................................... ±0.1 dB channel to channel  
Maximum level (Hi-Z) ................. +28 dBu, balanced; +20 dBV, unbalanced at 1%THD+N  
Maximum level (600 ohm)........... +21 dBm, balanced; +18 dBm, unbalanced at 1%THD+N  
Control/remote — switcher  
Serial control port.......................... RS-232, 9-pin female D connector  
Baud rate and protocol................. 9600 baud, 8 data bits, 1 stop bit, no parity  
Serial control pin configurations. 2 = TX, 3 = RX, 5 = GND  
“Show Me” contact closure.......... Pin 5 of each VGA input connector. The input is active (selected) when pin 5  
momentarily goes to ground.  
Program control............................. Extron’s control/configuration program for Windows®  
Extron’s Simple Instruction Set (SIS)  
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A-3  
Specifications, Part Numbers, Accessories, cont’d  
General  
Power.............................................. 100 VAC to 240 VAC, 50/60 Hz, 10 watts, internal  
Temperature/humidity................ Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing  
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing  
Cooling ........................................... Convection, no vents  
Mounting  
Rack mount........................ Yes, with included MBD 149 bracket kit, 70-077-03  
Furniture mount................ Yes, with optional under-desk mounting kit, part #70-077-01 (MBU 125), or  
through-desk mounting kit, part #70-077-02 (MBD 129)  
Enclosure type ............................... Metal  
Enclosure dimensions................... 1.75" H x 17.5" W x 9.5" D (1U high, full rack wide)  
(4.4 cm H x 44.4 cm W x 24.1 cm D)  
(Depth excludes connectors)  
Product weight .............................. 6.3 lbs (2.9 kg)  
Shipping weight ............................ 11 lbs (5 kg)  
Vibration......................................... ISTA 1A in carton (International Safe Transit Association)  
Regulatory compliance  
Safety................................... CE, C-tick, CUL, UL  
Compliances....................... CE, C-tick, FCC Class A, ICES, VCCI  
MTBF............................................... 30,000 hours  
Warranty......................................... 3 years parts and labor  
All nominal levels are at ±10%.  
N
N
Specifications are subject to change without notice.  
SW8/12 VGA Ars • Specifications, Part Numbers, Accessories  
A-4  
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Part Numbers and Accessories  
SW8/12 VGA Ars switchers  
Model  
Part number  
60-902-21  
SW8 VGA Ars  
SW12 VGA Ars  
60-946-21  
Included parts  
Description  
Part number  
70-077-03  
MBD 149 rack mount and through desk mounting kit  
5-pole, 3.5mm captive screw connector w/strain relief (10)  
100-457-01  
Rubber feet (4)  
IEC power cord  
Software CD (disk B)  
Audio wiring card  
Tweeker  
Cables and Adapters  
Description  
Part number  
26-490-xx  
VGA-A M-M cable w/audio  
SYM BNCF 15-pin HD male to BNC female mini HR cable  
SYM BNCM 15-pin HD male to BNC male mini HR cable  
26-531-xx  
26-533-xx  
Accessories  
Description  
Part number  
70-529-11  
VSW I AAP architectural adapter plate (black)  
VSW I AAP architectural adapter plate (white)  
VSW I AAP architectural adapter plate (RAL9010 white)  
MBU 149 1U full rack under-desk mounting ki  
IR 102 remote control kit  
70-529-21  
70-529-51  
70-222-01  
70-224-01  
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A-5  
 
Specifications, Part Numbers, Accessories, cont’d  
SW8/12 VGA Ars • Specifications, Part Numbers, Accessories  
A-6  
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Extron’s Warranty  
Extron Electronics warrants this product against defects in materials and workmanship for a period  
of three 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,  
and Central America:  
Extron Electronics  
1001 East Ball Road  
Anaheim, CA 92805  
Japan: Extron Electronics, Japan  
Kyodo Building, 16 Ichibancho  
Chiyoda-ku, Tokyo 102-0082  
Japan  
U.S.A.  
Europe, Africa, and the Middle East:  
Extron Europe  
Hanzeboulevard 10  
3825 PH Amersfoort  
The Netherlands  
China:  
Extron China  
686 Ronghua Road, Songjiang  
District  
Shanghai 201611  
China  
Asia:  
Middle East:  
Extron Asia  
Extron Middle East  
Dubai Airport Free Zone  
F12, PO Box 293666  
United Arab Emirates, Dubai  
135 Joo Seng Road, #04-01  
PM Industrial Bldg.  
Singapore 368363  
Singapore  
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  
Engineer at (714) 491-1500 (USA), 31.33.453.4040 (Europe), 65.383.4400 (Asia), or 81.3.3511.7655 (Japan)  
to receive an RA# (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.  
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tron USA - West Extron USA - East Extron Europe  
Extron Asia  
Extron Japan  
Extron China  
Extron Middle East  
adquarters  
+800.633.9876  
+800.3987.6673  
+800.7339.8766  
+81.3.3511.7655  
+81.3.3511.7656 FAX  
+400.883.1568  
+971.4.2991800  
+971.4.2991880 FAX  
Inside USA / Canada Only  
Inside Europe Only  
Inside Asia Only  
Inside China Only  
00.633.9876  
de USA / Canada Only  
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