Extron electronic Switch VSW 2VGA A User Manual

User’s Manual  
VSW 2VGA A  
2-Input, 1-output VGA and Audio Switcher  
68-1111-01 Rev. D  
11 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  
Chapter One • Introduction ................................................... 1-1  
About this Manual .................................................................... 1-2  
About the VSW 2VGA A.......................................................... 1-2  
Daisy Chaining the VSW 2VGA A......................................... 1-3  
Features ........................................................................................ 1-4  
Chapter Two • Installation and Operation ................. 2-1  
Installation Overvieꢀ............................................................... 2-2  
Mounting the VSW 2VGA A................................................... 2-2  
Rack shelf mounting.............................................................. 2-3  
UL rack mounting guidelines.................................................2-3  
Rack mounting instructions...................................................2-3  
Under-desk mounting............................................................ 2-6  
Through-desk mounting........................................................ 2-6  
Front Panel Features................................................................. 2-8  
Rear Panel Features................................................................... 2-9  
Setting the VSW 2VGA A Jumpers...................................... 2-10  
Poꢀer connection ................................................................ 2-13  
Operation................................................................................... 2-14  
Input selection...................................................................... 2-14  
Using the VSW I AAP ........................................................... 2-14  
Setting the VSW I AAP jumpers...........................................2-14  
Single sꢀitcher example......................................................2-14  
Daisy chain configuration ................................................... 2-15  
Loop configuration...............................................................2-15  
Loop configuration example ...............................................2-16  
Tree configuration................................................................2-18  
Tree configuration example.................................................2-18  
Appendix A • Specifications, Part Numbers, and  
Accessories ........................................................................................A-1  
Specifications..............................................................................A-2  
Included Parts .............................................................................A-5  
Accessories...................................................................................A-5  
All trademarks mentioned in this manual are the properties of their respective owners.  
VSW 2VGA A • Table of Contents  
i
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Table of Contents, cont’d  
VSW 2VGA A • Table of Contents  
ii  
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VSW 2VGA A  
Chapter One  
1
Introduction  
About this Manual  
About the VSW 2VGA A  
Daisy Chaining the VSW 2VGA A  
Features  
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Introduction  
About this Manual  
This manual contains information about the Extron  
VSW 2VGA A switcher. The terms “VSW 2VGA A” and  
“switcher” are used interchangeably in this manual. The Extron  
VSW I AAP interface (part # 70-529-xx), an optional accessory  
used when several VSW 2VGA A switchers are daisy chained  
together, is also discussed.  
About the VSW 2VGA A  
The Extron VSW 2VGA A is a compact and economical two-  
input, one-output VGA switcher with unbalanced stereo  
audio and 300 MHz (-3 dB) video bandwidth. It accepts two  
VGA-QXGA, RGBHV, RGBS, RGsB, RsGsBs, component video,  
or HDTV component video inputs. The switcher has two  
unbalanced stereo audio inputs and one unbalanced stereo  
audio output. It also features a buffered local monitor output  
for Input 1.  
A front panel toggle switch, a contact closure controller, or the  
autoswitching option can be used for input selection.  
VSW 2VGA A • Introduction  
1-2  
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Daisy Chaining the VSW 2VGA A  
Up to ten VSW 2VGA A switchers can be daisy chained together  
with each switcher's input separately fed and controlled by an  
optional accessory interface, the VSW I AAP (part #70-529-xx).  
Figure 1-1 is an example of how several such switcher-interface  
combinations can be daisy chained together in a boardroom  
environment.  
Extron  
VSW 1 AAP  
Extron  
VSW 2VGA A  
VGA Switcher  
SHOW ME  
AUDIO  
VSW I AAP  
COMPUTER  
Extron  
VSW I AAP  
Expandable, economical presentation chain for  
conference rooms and library study rooms.  
Projector  
Extron’s pre-made  
VGA with audio cable  
assemblies.  
SHOW ME  
SHOW ME  
SHOW ME  
AUDIO  
AUDIO  
AUDIO  
COMPUTER  
VSW  
I
AAP  
COMPUTER  
VSW  
I
AAP  
COMPUTER  
VSW I AAP  
VSW I  
AAP  
VSW I  
AAP  
VSW I  
AAP  
In 1  
In 1  
INPUT  
In 1  
INPUT  
1
INPUT  
2
INPUT  
1
2
INPUT  
1
INPUT  
2
INPUT  
1
INPUT  
2
In 2  
Out  
In 2  
Out  
In 2  
Out  
1
2
1
2
1
2
1
2
VSW 2VGA  
A
VSW 2VGA  
A
VSW 2VGA  
A
VSW 2VGA  
A
VSW 2VGA A  
VSW 2VGA A  
VSW 2VGA A  
Extron’s pre-made VGA with audio cable assemblies.  
Figure 1-1 — Daisy chaining the multiple switchers  
By default, all switchers are set to input 2 as the active input;  
therefore, in a daisy chain of switchers the VGA and audio  
signals flow from one switcher to input 2 of the next switcher in  
the chain. The switchers are daisy chained in this fashion until  
the last switcher in the daisy chain outputs to a projector and  
audio amplifier.  
Up to ten switchers can be daisy chained together without any  
degradation in picture quality. One power supply powers up to  
five switchers.  
VSW 2VGA A • Introduction  
1-3  
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Introduction, cont’d  
Features  
Autoswitching ability — The VSW 2VGA A can detect active  
sync signals and automatically switch to the highest  
numbered active input.  
Furniture mountable — The VSW 2VGA A can be mounted  
on a rack shelf, under a desk or podium, through a desk  
or furniture, or to a projector mount, using optional  
hardware.  
Daisy chaining — Multiple VSW 2VGA A switchers can be  
daisy chained together to form a presentation system.  
Each switcher can then be separately controlled through  
an Extron VSW I AAP interface.  
Stereo audio — Unbalanced stereo audio inputs and outputs on  
3.5 mm stereo mini jacks.  
VSW 2VGA A • Introduction  
1-4  
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VSW 2VGA A  
Chapter Two  
2
Installation and Operation  
Installation Overview  
Mounting the VSW 2VGA A  
Front Panel Features  
Rear Panel Features  
Operation  
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Installation and Operation  
Installation Overview  
To install and set up the VSW 2VGA A for operation, follow  
these steps:  
Turn all of the equipment off. Make sure that the video  
1
and audio sources (computers, stereos, tape decks, or other  
devices), the VSW 2VGA A, the output devices (projectors,  
speakers), and the contact closure control device are all  
turned off and disconnected from the power source.  
2
If you are going to daisy chain two or more switchers with  
VSW I AAP control panels, identify the revision of the  
VSW 2VGA A board (for configuring the VSW I AAPs)  
and configure the switchers' jumpers. See “Setting the  
VSW 2VGA A Jumpers” on page 2-10.  
3
4
5
If desired, mount the switcher. See “Mounting the  
VSW 2VGA A” in this chapter.  
Attach the cables. See “Front Panel Features" and "Rear  
Panel Features" in this chapter.  
Connect power cords and turn on the devices in the  
following order: output devices, contact closure controller,  
VSW 2VGA A switcher, and input devices.  
6
Select an input using the front panel input toggle switch or  
the contact closure controller.  
7
The image should now display, and sound should be  
audible. If not, ensure that all devices are plugged in and  
receiving power. Check the cabling and make adjustments  
as needed. Select a different input to check for a picture  
and sound.  
Mounting the VSW 2VGA A  
If you are going to daisy chain two or more switchers with  
N
VSW I AAP control panels, identify the revision of the  
VSW 2VGA A board (for configuring the VSW I AAPs)  
and configure the switchers' jumpers before mounting  
on page 2-10.  
The VSW 2VGA A can be mounted in a rack, or under or  
through furniture, using one of the following optional mounting  
kits:  
RSF 123 3 inch rack shelf kit (part #60-190-20)  
RSB 123 3 inch rack shelf (part #60-604-20)  
VSW 2VGA A • Installation and Operation  
2-2  
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RSU 126 6 inch deep universal rack shelf kit (part #60-  
190-10)  
RSB 126 6 inch deep basic rack shelf (part #60-604-10)  
RSU 129 9 inch 1U universal rack shelf kit (part #60-190-  
01)  
RSB 129 9 inch 1U basic rack shelf (part #60-604-01)  
MBU 125 Under-desk mount kit (part #70-077-01)  
MBD 129 Through-desk mount kit (part #70-077-02)  
When mounting the switcher, take cabling and power  
availability into consideration. Follow the appropriate  
mounting procedure on the following pages.  
Rack shelf mounting  
UL rack mounting guidelines  
The following Underwriters Laboratories (UL) guidelines  
pertain to the safe installation of the VSW 2VGA A in a rack.  
1.  
Elevated operating ambient temperature — If installed in  
a closed or multi-unit rack assembly, the operating ambient  
temperature of the rack environment may be greater than  
room ambient temperature. Therefore, install the switcher  
in an environment compatible with the maximum ambient  
temperature (Tma = +122° F, +50° C) specified by Extron.  
2.  
3.  
4.  
Reduced air flow — Install the equipment in a rack so that  
the amount of air flow required for safe operation of the  
equipment is not compromised.  
Mechanical loading — Mount the equipment in the rack  
so that a hazardous condition is not achieved due to  
uneven mechanical loading.  
Circuit overloading — Connect the equipment to  
the supply circuit and consider the effect that circuit  
overloading 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) — Maintain reliable  
grounding of rack-mounted equipment. Pay particular  
attention to supply connections other than direct  
connections to the branch circuit (e.g. use of power strips).  
Rack mounting instructions  
1. If feet were installed on the bottom of the switcher, remove  
them.  
VSW 2VGA A • Installation and Operation  
2-3  
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Installation and Operation, cont’d  
2.  
Mount the VSW 2VGA A on one of the following rack  
shelves:  
RSF 123 rack shelf kit (part #60-190-20)  
RSB 123 rack shelf (part #60-604-20)  
RSU 126 6 inch deep universal rack shelf kit  
(part #60-190-10)  
RSB 126 6 inch deep basic rack shelf (part #60-604-10)  
RSU 129 1U universal rack shelf kit (part #60-190-01)  
RSB 129 1U basic rack shelf (part #60-604-01)  
On the standard rack shelf, the switcher mounts in one  
of four locations to the rear of the rack or in one of four  
locations to the front of the rack.  
3.  
Attach the switcher to the rack shelf using two  
4-40 x 3/16 inch machine screws. Insert the screws from  
the underside of the shelf and securely fasten them into  
diagonally opposite corners, as shown in figure 2-1.  
VersaTools Rack Shelf  
1/4 Rack Width Front  
False Faceplate  
Use 2 mounting holes on  
opposite corners.  
(2) 4-40 x 3/16"  
Screws  
Figure 2-1 — Mounting the VSW 2VGA A on a rack  
shelf  
Since the switcher is 1.0 inch high, there will be a gap of  
0.75 inch above the switcher.  
N
VSW 2VGA A • Installation and Operation  
2-4  
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4.  
Attach the rack shelf to the rack using four  
10-32 x 3/4 inch bolts (provided). Insert the bolts through  
#10 beveled washers, then through the holes in the rack  
ears and rack, as shown in figure 2-2.  
1U Universal Rack Shelf  
(2) 4-40 x 3/16"  
Screws  
Use 2 mounting holes on  
opposite corners.  
Figure 2-2 — Mounting the VSW 2VGA A on a  
standard 1U rack shelf  
VSW 2VGA A • Installation and Operation  
2-5  
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Installation and Operation, cont’d  
Under-desk mounting  
1.  
Attach the under-desk mounting brackets (MBU 125,  
part #70-077-01) to the VSW 2VGA A with the four  
provided machine screws, as shown in figure 2-3.  
Figure 2-3 — Under-desk mounting brackets  
2.  
Hold the switcher with attached brackets against the  
mounting surface. Use a soft pencil to mark the location of  
holes for screws on the desk or other furniture.  
3.  
Drill 1/4 inch (6.4 mm) deep, 3/32 inch (2 mm) diameter  
pilot holes in the table or desk at the marked screw  
locations from the underside/inside (concealed side) of the  
furniture, where the switcher will be located.  
4.  
Attach the VSW 2VGA A to the desk with the provided  
wood screws.  
Through-desk mounting  
1.  
Hold the front panel of the switcher against the furniture.  
Use a soft pencil to mark the rough-in opening on the desk.  
The opening, 1.125 inch x 4.425 inch (2.8 cm x 11.2 cm) will  
be slightly larger than the switcher enclosure.  
2.  
Cut out the material from the rough-in area with a jigsaw.  
Check the opening size by inserting the switcher part way  
through the hole. If needed, use a saw, le, or sandpaper  
to enlarge the hole. Smooth the edges of the hole with  
sandpaper.  
VSW 2VGA A • Installation and Operation  
2-6  
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3.  
4.  
5.  
Attach the through-desk mounting brackets  
(MBD 129, part #70-077-02) to the VSW 2VGA A with the  
four provided machine screws, as shown in the through-  
desk mounting diagram on the next page.  
Hold the switcher with attached brackets up against the  
underside of the desk or table. Use a soft pencil to mark  
the locations of the holes for the screws that will attach the  
brackets to the desk.  
Drill 1/4 inch (6 mm) deep, 3/32 inch (2 mm) diameter  
pilot holes in the desk or table at the marked screw  
locations. The holes should be drilled from the underside  
or inside (concealed side) of the furniture, where the  
switcher will be located.  
6.  
Attach the switcher to the desk or table with the provided  
wood screws, as shown in figure 2-4.  
A
A
2 V G  
S W  
V
T
I
T
I N
2
1
Figure 2-4 — Through-desk mounting  
7.  
To adjust the height of the switcher within the desk,  
slightly loosen the screws that attach the brackets to the  
switcher, adjust the height by sliding the switcher up or  
down, and retighten the screws.  
VSW 2VGA A • Installation and Operation  
2-7  
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Installation and Operation, cont’d  
Front Panel Features  
INPUT 1  
INPUT 2  
1
1
2
2
VSW 2VGA A  
3
4
5
6
7
Figure 2-5 — VSW 2VGA A front panel features  
Input 1 LED indicator — This LED lights green whenever  
input 1 (video and audio) is selected.  
a
b
Input 2 LED indicator — This LED lights green whenever  
input 2 (video and audio) is selected.  
The LEDs  
and  
above also serve as power up  
N
a b  
indicators. When the switcher is powered up, the selected  
input's LED lights green.  
Input select toggle switch Toggling this switch up selects  
input 1; toggling it down selects input 2.  
c
d
Input 1 video — Input VGA-QXGA, RGBHV, RGBS, RGsB,  
RsGsBs, component video, or HDTV component video through  
this female 15-pin HD connector.  
Input 1 audio — Input unbalanced stereo audio through this  
3.5 mm mini audio jack (figure 2-6).  
e
Tip (L)  
Ring (R)  
Sleeve (  
)
3.5 mm Stereo Plug Connector  
(unbalanced)  
Figure 2-6 — Audio input connector  
Input 2 video — Input VGA-QXGA, RGBHV, RGBS, RGsB,  
RsGsBs, component video, or HDTV component video through  
this female 15-pin HD connector.  
f
g
Input 2 audio — Input unbalanced stereo audio through this  
3.5 mm mini audio jack. See figure 2-6.  
VSW 2VGA A • Installation and Operation  
2-8  
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Rear Panel Features  
VSW 2VGA A  
POWER  
12V  
.1A MAX  
VGA IN 1 LOOP  
OUTPUT  
CONTACT  
AUD OUT  
1
2
AUTO-SW  
1
2
3
4
5
Figure 2-7 — VSW 2VGA A rear panel features  
Power connector — Connect the included 12 VDC external  
power supply to the 2-pole, 3.5 mm captive screw connector.  
a
One power supply can power up to five switchers.  
N
See "Power connection" in this chapter.  
Loop Thru Input 1 connector — female 15-pin HD connector for  
buffered local monitor output from Input 1  
b
c
Output — female 15-pin HD connector for output from Input  
1 or Input 2. The output video type follows input type and is  
either VGA-QXGA, RGBHV, RGBS, RGsB, RsGsBs, component  
video, or HDTV component video.  
Audio Output connector — Unbalanced stereo audio is output  
from this 3.5 mm mini audio jack (figure 2-8).  
d
e
Tip (L)  
Ring (R)  
Sleeve (  
)
3.5 mm Stereo Plug Connector  
(unbalanced)  
Figure 2-8 — Audio output connector  
If you are daisy chaining, connect the other end of  
the audio cable to the audio Input 2 connector on the  
downstream switcher.  
N
Contact closure/Autoswitching (Contact/Auto-SW) —  
Contact closure — Connect a contact closure device to this  
3-pole, 3.5 mm captive screw connector.  
Pin 1 selects Input 1 when momentarily connected to  
ground (pin 3).  
VSW 2VGA A • Installation and Operation  
2-9  
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Installation and Operation, cont’d  
Pin 2 selects Input 2 when momentarily connected to  
ground (pin 3).  
1
2
Ground connects to the ground wire (equipment  
ground).  
Simultaneously connecting both pins 1 and 2 to  
ground (pin 3) turns autoswitching mode on.  
N
Autoswitching —  
Autoswitch mode must be disabled when daisy chaining  
VSW 2VGA A switchers. If the autoswitch mode is  
enabled, the switchers cannot be daisy chained.  
N
RGsB and RsGsBs inputs and outputs occur in manual  
mode only.  
N
N
Autoswitching requires TTL level sync on pin 13 of the  
15-pin HD connector.  
Pins 1, 2, and Ground when jumpered/shorted together (as  
shown at right) turn the autoswitching mode on. When  
the autoswitching mode is on, the switcher automatically  
switches to the input that has an active sync signal.  
CONTACT  
1
2
If both inputs have an active sync signal present, input  
2 is selected, and the input 2 LED indicator lights. If no active  
sync signal is present, the input 1 LED indicator still lights to  
indicate that the unit is still powered on.  
When the autoswitch mode is active, both daisy chaining  
and the front panel's input toggle switch are disabled,  
and the input cannot be manually switched. Any attempt  
to toggle the switch while the switcher is in this mode  
results in the flashing of the currently active input's  
LED indicator. Contact closure is also disabled while in  
autoswitch mode.  
N
Setting the VSW 2VGA A Jumpers  
If you plan to use the VSW I AAP and/or create a daisy  
N
chain configuration, you must configure the switchers  
before installing them in a rack or furniture and making  
connections.  
Daisy chaining VSW 2VGA A switchers requires you to check  
and/or set internal jumpers in the switcher.  
1.  
If applicable, disconnect all power to the switcher and any  
attached devices.  
VSW 2VGA A • Installation and Operation  
2-10  
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2.  
Remove the two screws on each side of the switcher  
(figure 2-9). Remove the four connector nuts on the front  
panel of the switcher. Lift the top cover off of the switcher.  
INPU
VSW 2VGA  
A
INPUT  
1
2
Remove (4)  
Screws  
Remove (4)  
Connector Nuts  
Figure 2-9 — Removing the cover  
FRONT PANEL  
JMP4  
JMP3  
JMP1  
JMP5 JMP6  
Figure 2-10 — VSW 2VGA A jumper locations  
3.  
4.  
Set the jumpers for the switcher. See figure 2-11.  
Set the cover in place and resinstall the screws remove in  
step 2.  
There are five jumpers, numbered JMP1, and JMP3 thru JMP6,  
that control daisy chaining on the VSW 2VGA A switcher (figure  
2-10). Both data and power must be daisy chained from one  
switcher to another.  
VSW 2VGA A • Installation and Operation  
2-11  
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Installation and Operation, cont’d  
OPEN  
CLOSED  
All jumpers are set open (disabled) by default.  
Open or close the indicated jumpers in the table below,  
as needed, to adjust the appropriate settings. See “Using  
the VSW I AAP” and “Daisy chain configuration” in this  
chapter for other jumper settings.  
Pin 5 - Control Pin 9 - +5 VDC  
Input 1  
Input 2  
Output  
JMP 1  
JMP 3  
JMP 5  
JMP 4  
JMP 6  
Figure 2-11 — Jumper positions  
These jumpers enable or disable VGA connector pin 5 (control)  
and VGA connector pin 9 (power) of the switcher inputs and  
outputs. Close (install) the jumper for VGA connector pin 5  
to daisy chain data to the next switcher, and close (install) the  
jumper for VGA connector pin 9 to daisy chain power to the  
next switcher.  
When the switchers are not daisy chained together or used  
with the VSW I AAP, all jumpers should be in the default  
(open) position.  
N
VSW 2VGA A • Installation and Operation  
2-12  
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Power connection  
One power supply can power up to five daisy chained  
switchers. Additional switchers require one or more power  
supplies. See "Daisy chain configuration", later in this chapter.  
Figure 2-12 shows how to wire the power connector.  
Smooth  
Ridges  
A
A
SECTION A–A  
3/16” (5 mm) Max.  
(to ground)  
Power Supply  
Output Cord  
Captive Screw  
Connector  
Figure 2-12 — Power connector wiring  
The two power cord wires must be kept separate  
while the power supply is plugged in. Remove  
power before wiring.  
C
When you are connecting the power supply, voltage  
polarity is critical. Applying power with incorrect  
voltage polarity could damage the power supply  
and the VSW 2VGA A. Identify the power cord  
negative (ground) lead by the ridges on the side of  
the cord or a black heat shrink wrapping around it.  
C
Strip the jacket to expose 3/16 inch (5 mm) of the  
conductors. Do not tin the stripped power supply leads  
before installing the captive screw connector. Tinned wires  
are not as secure in the captive screw connectors and could  
be pulled out.  
N
To verify the polarity before connection, check the no load  
power supply output with a voltmeter.  
The maximum number of switchers that can be daisy  
chained is limited by several factors: power consumption,  
cable lengths, and the overall distortion of the video and  
audio signals.  
N
VSW 2VGA A • Installation and Operation  
2-13  
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Installation and Operation, cont’d  
Operation  
Apply power and the input signals. The video and audio  
output connectors, including the Loop Thru Input 1 connector,  
should output signals.  
Input selection  
There are three ways to select between Input 1 and Input 2:  
Toggle the front panel input select switch up (Input 1) or  
down (Input 2).  
Use the rear panel contact closure capability.  
Press the Show Me button on the VSW I AAP to select the  
input on the connected VSW 2VGA A switcher.  
Using the VSW I AAP  
The VSW I AAP can be used on the inputs of a single switcher  
or on the inputs of multiple switchers in a daisy chain  
configuration.  
Setting the VSW I AAP jumpers  
A jumper on the VSW I AAP may need to be shifted from  
jumper J6 (the default position) to J5, depending on the  
application. See the following illustration and table.  
J5  
J6  
Jumper installed Switcher compatibility  
J6  
J5  
VSW 2VGA A (Input 1)  
VSW 2VGA A (Input 2)  
Single switcher example  
The following illustration is an example of a single switcher  
configuration.  
VSW 2VGA A • Installation and Operation  
2-14  
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SHOW ME  
VSW I AAP  
1
2
VSW I AAP  
VSW I AAP  
SHOW ME  
SHOW ME  
AUDIO  
AUDIO  
VSW  
I
AAP  
VSW I AAP  
COMPUTER  
COMPUTER  
Out  
Internal Jumper Settings  
Input 1  
Input 2  
IPUT  
1
PUT  
2
Jumper Setting  
1
2
VSW 2VGA A  
Out  
VSW 2VGA  
A
Closed  
JMP1  
JMP3  
JMP4  
Closed  
Closed  
Open  
12 V Power  
Supply*  
JMP5  
JMP6  
Open  
Figure 2-13 — Single switcher configuration  
Press the Show Me button on the VSW I AAP to select the  
corresponding input on the VSW 2VGA A.  
Daisy chain configuration  
Multiple VSW 2VGA A switchers can be daisy chained together  
in a loop configuration or a tree comfiguration.  
Daisy chaining uses all pins and wires of a standard VGA  
cable. Not all VGA cables include all pins and wires.  
Ensure that the VGA cable that you use has all 15 pins  
connected.  
N
Loop configuration  
In a loop configuration, the output of each VSW 2VGA A is  
connected to Input 2 of the next VSW 2VGA A switcher. This  
repetition of one switcher's output to another switcher's input  
can be repeated for up to a maximum of 10 switchers in a daisy  
chain. The output of the first switcher is connected to a display.  
Source signals are connected to Input 1 of each VSW 2VGA A  
switcher either directly or through the VSW I AAP interface.  
Select the source by toggling to Input 1 on the VSW 2VGA  
A's front panel (or through contact closure on the rear panel)  
or by pressing the VSW I AAP's Show Me button for the  
corresponding switcher.  
Up to 10 switchers can be daisy chained in this  
configuration without any signal degradation.  
A power supply is required for every 5 switchers.  
VSW 2VGA A • Installation and Operation  
2-15  
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Installation and Operation, cont’d  
Configure the jumpers on each VSW 2VGA A according to  
the following example.  
The VSW I AAP is configured for a loop configuration by  
default.  
In a loop configuration, the "show me" feature can be used  
without a VSW I AAP control panel. Select Input 1 using  
N
either the front panel toggle switch (see item in "Front  
c
Panel Features") or the rear panel contact closure control  
(see item in "Rear Panel Features") to issue the "show  
e
me" control signal.  
Loop configuration example  
The illustration on the following page is an example of daisy  
chaining using a loop configuration.  
VSW 2VGA A • Installation and Operation  
2-16  
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Figure 2-14 — Loop configuration  
VSW 2VGA A • Installation and Operation  
2-17  
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Installation and Operation, cont’d  
Tree configuration  
In a tree configuration, the output of each VSW 2VGA A  
switcher is connected to input 1 or input 2 of the next switcher.  
This repetition of one switcher's output to another switcher's  
input can be repeated for up to a maximum of 10 switchers in  
a daisy chain. The output of the last switcher is connected to a  
display.  
Source signals are connected to input 1 and input 2 of each VSW  
2VGA A switcher at the top of the tree through a VSW I AAP  
interface. Select the source by pressing the VSW I AAP's Show  
Me button for the corresponding switcher.  
Switchers can be daisy chained in this configuration up to  
ten levels deep without any signal degradation.  
A power supply is required for each switcher in the  
chain that has its output connected to input 1 of the next  
switcher.  
Sources can only be selected and connected to the  
switcher through the VSW I AAP interface.  
Each VSW I AAP must be configured for the tree  
configuration. See "Using the VSW I AAP" in this chapter  
for additional information.  
Tree configuration example  
The following illustration is a simple example of daisy chaining  
using a tree configuration.  
VSW 2VGA A • Installation and Operation  
2-18  
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1
2
3
4
VSW I AAP  
VSW I AAP  
VSW I AAP  
VSW I AAP  
SHOW ME  
SHOW ME  
SHOW ME  
SHOW ME  
AUDIO  
AUDIO  
AUDIO  
AUDIO  
VSW  
I
AAP  
VSW I AAP  
COMPUTER  
COMPUTER  
VSW  
I
AAP  
VSW I AAP  
COMPUTER  
COMPUTER  
Out  
Out  
Input 1  
Input 2  
Input 1  
Input 2  
PUT  
1
INPUT  
2
INPUT  
1
IPUT  
2
1
2
1
2
B
B
VSW 2VGA  
A
VSW 2VGA  
A
Out  
12 V Power  
Supply*  
Input 1  
Input 2  
INPUT  
1
NPUT  
2
1
2
A
VSW 2VGA  
A
VSW 2VGA A Out  
12 V Power  
Supply  
* Every switcher connected  
to Input 1 of another  
switcher must have its  
own power supply.  
Projector  
Internal Jumper Settings  
A
B
Jumper Setting  
Jumper Setting  
Closed  
Closed  
JMP1  
JMP3  
JMP4  
JMP1  
JMP3  
JMP4  
Closed  
Closed  
Closed  
Closed  
Closed  
Closed  
Open  
JMP5  
JMP6  
JMP5  
JMP6  
Open  
Figure 2-15 — Tree configuration  
VSW 2VGA A • Installation and Operation  
2-19  
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Installation and Operation, cont’d  
VSW 2VGA A • Installation and Operation  
2-20  
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VSW 2VGA A  
Appendix A  
A
Specifications, Part Numbers,  
and Accessories  
Specifications  
Included Parts  
Accessories  
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Specifications, Part Numbers, and Accessories  
Specifications  
Video  
Gain................................................. Unity  
Bandwidth...................................... 300 MHz (-3 dB)  
Video input and loop through  
Number/signal type..................... 2 VGA-QXGA RGBHV, RGBS, RGsB*,  
RsGsBs*, HDTV component video* input  
1 VGA-QXGA RGBHV, RGBS, RGsB,  
RsGsBs, HDTV component video* local  
monitor loop-through  
RGsB, RsGsBs, and HDTV component video inputs and  
outputs work in manual mode only. Autoswitching requires  
TTL level sync on pin 13 of the 15-pin HD connector.  
N
Connectors ..................................... 3 female 15-pin HD  
Pin connections.............................. ID bits on pins 4, 11, 12, 15 from inputs 1  
and 2: passed to main output  
Pin 9 of input 1: floating  
Pin 9 of input 2: used for the Show-Me  
feature  
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: 0.4 V to 1.8 Vp-p with no offset  
Impedance...................................... 75 ohms  
Horizontal frequency.................... 15 kHz to 145 kHz  
Vertical frequency.......................... 30 Hz to 170 Hz  
Video output  
Number/signal type..................... 1 VGA-QXGA RGBHV, RGBS, RGsB*,  
RsGsBs*, HDTV component video*  
(follows input type)  
Connectors ..................................... 1 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........ 0.4 V to 1.8 Vp-p (follows input)  
Impedance...................................... 75 ohms  
ID bits are passed through from VGA inputs to the VGA output.  
N
VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-2  
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Sync  
Input type....................................... RGBHV, RGBS, RGsB*, RsGsBs*, bi-level  
and tri-level (HDTV) component video  
sync  
Output type.................................... RGBHV, RGBS, RGsB*, RsGsBs*, bi-level  
and tri-level (HDTV) component video  
sync (follows input)  
Input level ...................................... 1.8 V to 5.0 Vp-p  
Output level................................... TTL: 5.0 V p-p, unterminated  
Input impedance ........................... 510 ohms  
Output impedance........................ 50 ohms  
Max. input voltage........................ 5.0 Vp-p  
Max. rise/fall time ........................ 40 ns  
Polarity............................................ Positive or negative (follows input)  
Audio  
Gain................................................. Unbalanced output: 0 dB  
Frequency response ...................... 20 Hz to 20 kHz, 0.05 dB  
THD + Noise.................................. 0.002% @ 1 kHz at nominal level (-10 dBV)  
S/N.................................................. 94 dB at maximum output (unweighted)  
Crosstalk......................................... -50 dB @ 20 kHz, -75 dB @ 1 kHz and  
below 60 Hz  
Stereo channel separation ............ 96 dB @ 1 kHz  
Audio input  
Number/signal type..................... 2 stereo, unbalanced  
Connectors ..................................... (2) 3.5 mm mini audio jacks (tip, ring,  
sleeve)  
Impedance...................................... 22k ohms unbalanced, AC coupled  
Nominal level ................................ -10 dBV (316 mVrms)  
Maximum level.............................. +9 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..................... 1 stereo, unbalanced  
Connectors ..................................... (1) 3.5 mm mini audio jack (tip, ring,  
sleeve)  
VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-3  
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Specifications, Part Numbers, and Accessories  
Impedance...................................... 50 ohms unbalanced  
Gain error ....................................... 0.1 dB channel to channel  
Maximum level (Hi-Z) ................. >+9 dBV, unbalanced at 1% THD+N  
Maximum level (600 ohm)........... >+7 dBV, unbalanced at 1% THD+N  
Control/remote — switcher  
Contact closure .............................. (1) 3.5 mm captive screw connector, 3 pole  
for momentary contact  
Contact closure pin configurations. 1 = input 1 select, 2 = input 2 select, 3 =  
GND  
Shorting all three pins together enables  
autoswitch mode.  
Loop signal..................................... Momentary low, 250 µs  
General  
External power supply................. 100 VAC to 240 VAC, 50-60 Hz, external; to  
12 VDC, 1 A (max.), regulated  
Power input requirements........... 12 VDC, 0.1 A  
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 optional 1U rack shelf  
Furniture mount................ Yes, with optional under-desk mounting  
kit or through-desk mounting kit  
Pole mount......................... Yes, with optional pole mount kit  
Enclosure type ............................... Metal  
Enclosure dimensions................... 1.0" H x 4.3" W x 3.0" D (quarter rack  
wide)  
2.5 cm H x 10.9 cm W x 7.6 cm D  
(Depth excludes connectors.)  
Product weight .............................. 0.5 lb (0.3 kg)  
Shipping weight ............................ 3 lbs (2 kg)  
Vibration......................................... ISTA 1A in carton (International Safe  
Transit Association)  
Regulatory compliance  
Listings................................ CE, c-UL, UL  
Compliances....................... CE, C-tick, FCC Class A, ICES, VCCI  
VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-4  
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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.  
Included Parts  
These items are included in each order for a VSW 2VGA A:  
Included parts  
Part number  
to reorder  
VSW 2VGA A  
60-758-01  
12 VDC, 1A external power supply  
3.5 mm 3-pole captive screw connector  
3.5 mm 2-pole captive screw connector  
VSW 2VGA A Setup Guide  
70-775-01  
Accessories  
Accessories  
Part number  
70-529-11  
VSW I AAP — black  
VSW I AAP — white  
VSW I AAP — RAL9010 white  
70-529-21  
70-529-51  
RSB 123 —  
60-604-21  
1U basic rack shelf  
RSF 123 —  
1U rack shelf kit  
60-190-20  
60-190-10  
RSU 126 —  
1U 6" deep universal rack shelf kit  
RSB 126 — 1U 6" deep basic rack shelf  
RSU 129 — 1U universal rack shelf kit  
RSB 129 — 1U basic rack shelf  
60-604-11  
60-190-01  
60-604-02  
70-077-01  
70-077-02  
MBU 125 — 1U under-desk mount kit  
MBD 129 — 1U through-desk mount kit  
VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-5  
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Specifications, Part Numbers, Accessories, cont’d  
Cable Accessories  
Part number  
26-490-xx  
VGA with audio cables  
VGA to BNC-5 female cables  
26-531-xx  
(SY VGA), 0.5' - 100' (0.15 m - 30.4 m)  
VGA to BNC-5 male cables  
26-533-xx  
(SY VGA), 0.5' - 100' (0.15 m - 30.4 m)  
MSR 6 Adapter, 6" (0.15 m)  
26-592-01  
3.5 mm Mini Stereo-HQ/10  
100-331-01  
VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-6  
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VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-7  
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Specifications, Part Numbers, Accessories, cont’d  
VSW 2VGA A • Specifications, Part Numbers, and Accessories  
A-8  
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Extron 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 USA  
1001 East Ball Road  
Anaheim, CA 92805  
U.S.A.  
Japan:  
Extron Japan  
Kyodo Building, 16 Ichibancho  
Chiyoda-ku, Tokyo 102-0082  
Japan  
China:  
Europe, Africa, and the Middle East:  
Extron Europe  
Hanzeboulevard 10  
3825 PH Amersfoort  
The Netherlands  
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), 65.6383.4400  
(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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Extron USA-West Extron USA-East Extron Europe  
Extron Asia  
Extron Japan  
Extron China  
Extron Middle East  
Headquarters  
+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  
+800.633.9876  
Inside USA / Canada Only  
+1.919.863.1794  
+1.919.863.1797 FAX  
+31.33.453.4040  
+31.33.453.4050 FAX  
+65.6383.4400  
+65.6383.4664 FAX  
+86.21.3760.1568  
+86.21.3760.1566 FAX  
+1.714.491.1500  
+1.714.491.1517 FAX  
© 2009 Extron Electronics. All rights reserved.  
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