Extron electronic VEGA AUDIO SW6 User Manual 2

Specifications

VGA connector pin-9 - If your equipment/application requires that the pin-9 signal of the selected input be
passed to output connector pin-9, it will be necessary to add (solder) jumpers (JMP1 = Input 1, JMP2 = Input
2, etc.) onto the inside of the rear panel (see Figure 5-A). Each jumper consists of 2 etch/solder pads
separated by approximately 1/16th inch gap. Connect (solder a wire across) the 2 pads for the desired input/
jumper (example: for Input 1, connect the JMP1 solder pads). Pin-9 pass through may be enabled for as
many inputs as desired. To access the inside of the rear panel, DISCONNECT POWER and remove four
screws from the top of the switcher. The bottom panel can then be removed. Unplug the three cables
connected to the video circuit card enabling it to be removed.

User’s Guide

JMP5

JMP6

F

IGURE

5-A

Specifications

Video

Connectors - Input and Output VGA .. 15 pin HD D-Sub (Female)

Audio

Input Type .. 6 Inputs, Stereo, Balanced or Unbalanced

Throughput Response .. ±.05 dB 20 Hz to 20 kHz

Output Type .. 1 Output, Stereo, Balanced or Unbalanced

General

Part Numbers SW6 VGA Audio Switcher .. 60-260-01

VGA/MAC Adapter (Composite Sync) .. 26-340-01

VGA/MAC HV Adapter (Mac H/V sync) .. 26-340-02

Extron Electronics, USA

1230 South Lewis Street
Anaheim, CA 92805
USA

www.extron.com

714.491.1500
Fax [phone]

Input Video Signal Level .. 0.5 to 2 volts p-p

Video Gain .. Unity
Frequency Range (H. Sync) .. 15-145 kHz
Frequency Range (V. Sync) .. 30-170 Hz

RGB Video Bandwidth .. 350 MHz (-3 dB)

Input Impedance .. 75 Ohms

Output Impedance .. 75 Ohms

Termination Impedance .. 75 Ohms

Sync Input Impedance .. 510 Ohms

Connectors .. 3.5mm Captive screw terminal, 5 conductor

Maximum Level .. 19.5 dBu

Impedance Balanced/Unbalanced .. 25 kohms/50 kohms (DC coupled)

Gain Adjustment .. –15.0 dB to +9.0 dB, adjustable per input

Maximum Channel Gain .. 15.0 dB (Input gain @ max., Balanced, Output)

Connector .. 3.5mm Captive screw terminal, 5 conductor

Impedance .. 50 Ohms unbalanced, 100 ohms balanced

Gain .. Unbalanced: 0 dB, Balanced: +6 dB

Operation Temperature .. 0° to +50° C

Storage Temperature .. –40° to +70° C

Humidity .. 10% to 90% non-condensing

MTBF Demonstrated .. 30,000 Hours

Vibration .. NSTA 1A in carton

Approvals .. CE, UL Listed, FCC Class A

Power Supply .. 100-240 VAC 50/60 Hz, 0.3A max.

.. Internal auto-switchable

Dimensions .. 1.75" H x 17.4" W x 9.5" D

.. 4.45cm H x 44.1cm W x 24.13cm D

Shipping Weight .. 8 lbs. (3.6 kg)

Warranty .. 3 years parts and labor

IR-20 Infrared Remote Control .. 70-036-02

3.5mm Captive screw connector .. 10-319-01
19" 1U Universal Rack Shelf .. 60-190-01

Extron Electronics, Europe

Beeldschermweg 6C
3821 AH Amersfoort
The Netherlands
+31.33.453.4040
Fax [phone]

© 2006 Extron Electronics. All rights reserved.

JMP3

Extron Electronics, Asia

135 Joo Seng Road, #04-01
PM Industrial Building
Singapore 368363
+65.6383.4400
Fax [phone]

JMP1

JMP2JMP4

Refer to the safety instructions
in the literature that came with

this equipment.

Extron Electronics, Japan

Kyodo Building
16 Ichibancho
Chiyoda-ku, Tokyo 102-0082 Japan
+81.3.3511.7655
Fax [phone]

SW6 VGA Audio

6-Input, 1-Output VGA — QXGA and Stereo Audio Switcher

68-377-01 Rev. D

06 06

Installation and Operation

Gnd

Gnd

Tip

S

LEEVE(S)

Tip

UNBALANCED OUTPUT

(high impedance)

NO SLEEVE

L

R

L

R

TIP

TIP

SLEEVE

SLEEVE

UNBALANCED INPUT

(high impedance)

NO SLEEVE

Gnd

BALANCED OUTPUT

(high impedance)

BALANCED INPUT

(high impedance)

Gnd

Gnd

BALANCED OUTPUT

(600 ohms)

Gnd

R

ING

TIP

SLEEVE(S)

R

ING

Tip

R

ING

TIP

SLEEVE(S)

R

ING

Tip

600

BALANCED INPUT

(600 ohms)

600

L

R

L

R

L

R

L

R

RING

TIP

SLEEVE(S)

R

ING

Tip

R

ING

TIP

SLEEVE(S)

R

ING

Tip

The SW6 VGA Audio is a 6 input - 1 output audio/video switcher housed in a rack mountable, 1U high, full
width metal enclosure with internal, universal 100-240 VAC 50/60 Hz power supply. The switcher front and
rear panels are shown in Figure 1-A followed by descriptions of controls and connectors.

F

IGURE

1-A

A Power LED - ON if AC power applied. (also see item F)
B Six Input Select Buttons and LEDs - Used to select an input in Manual mode.

Hold button 1 and press and hold NORM (Normal = Manual) or AUTO (Autoswitch) button to select Mode.
Buttons 5/6 are used to increase/decrease audio setting w/Audio LED ON.

C AUDIO Button/LED - Used to set/indicate audio view/adjust operation.
D ±dB LEDs - Indicates polarity of Audio Level setting.
E IEC AC Power connector - 100-240 VAC 50/60 Hz, 0.3 amps maximum.
F Power LED - ON if AC power applied. (also see item A)
G Six VGA input connectors - Up to six VGA inputs may be connected.
H VGA output connector - Selected VGA input available at this connector.

I Six audio input captive screw connectors.
J Audio output captive screw connector.
K REMOTE connector - Used for RS-232 and/or Contact Closure control.

Operating Modes - The SW6 VGA Audio switcher operates in Manual or Autoswitch Mode (see item B

above). Input selection in Manual mode may be done using Input select buttons 1 - 6 on the front panel or
through the rear panel Remote connector (contact closure or RS-232). In Autoswitch Mode the switcher
automatically selects the highest number input that has sync pulses available while blocking input selection
by the front panel switches or through the Remote connector.

Connection Diagram - The connection diagram in Figure 1-B shows four PC computers and two M

AC

computers (with cable adapters) connected as inputs to the SW6 VGA Audio switcher. A projector is shown
connected to the switcher output.

Using the Captive Screw Audio Connectors

The SW6 VGA Audio switcher has a single row of 3.5 mm audio receptacles along the bottom right side of the
rear panel (see items I & J, Figure 1-A) with six inputs labeled L 1 R through L 6 R, and one output. Each audio
receptacle has five contacts, and is labeled for left (L), right (R), polarity (+/–), ground, and the input numbers
plus the output.

Captive screw audio connectors (3.5 mm) are supplied (P/N 10-319-10) with the switcher, one for each input
and one for the output. Connectors must be wired to the audio cables using the captive screws inside the
connectors (F

IGURE 2-B). Each audio connector will then be plugged into the appropriate input or output position

on the rear panel. Figure 2-C shows three methods of wiring the connectors, depending on your system, with
input examples across the top and output examples below.

When making connections for the SW6 VGA Audio switcher from existing audio cables, see Figure 2-A. 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", "tip" and "sleeve" markings are also used on the
captive screw audio connector diagrams in Figure 2-C. Together, these examples may be used as a guide for
terminating audio cables.

FIGURE 2-A FIGURE 2-B

Tip

Sleeve

Tip (+)

Ring (-)

Sleeve

FIGURE 2-D

LR

23

FIGURE 2-C

LR

__ Do not connect equipment that uses phantom power.
__ If using Unbalanced Output example above (shaded background), connect the sleeve(s) to

Ground (Gnd). Connecting it to a negative (-) terminal will damage audio output circuits.
NO Sleeve means NO CONNECTION!

__ There is no physical way to prevent you from plugging an audio connector partially in one

input and partially in the adjacent input. Align the Audio connectors carefully before
plugging them in to avoid circuit damage.

F

IGURE

SW6 VGA Audio • Installation and Operation

1

1-B

PC

PC

Mac

Mac

PC PC

AUDI O
INPUTS

Projector

Extron
SW 6 VGA Audio

Switcher

Sound System

Remote Control

The REMOTE connector enables the
switcher to be controlled from an
RS-232 Host device/system or a
contact closure device such as
Extron’s IR-20 Infrared Remote Control.
RS-232 and Contact Closure REMOTE connector pin
assignments are shown to the right. To select an input through the Remote connector contact closure pins,
momentarily

Extron's Windows Compatible Software

UNIVSW is Extron's Windows

1

connect the pin for the desired input number (#) to logic ground (pin 5).

®

3.1 and Windows 95 compatible program which may be used to control switcher
input selection, audio adjustments and mode selection (Manual or Autoswitch). It is supplied on a CD-ROM
from which it must be installed onto and launched from the hard drive.

To install the software onto the hard drive (it will occupy approximately 1 MB of hard disk space), run
LAUNCH.EXE from the CD. To run UNIVSW from the hard disk, double-click on the UNIVSW program icon in
the Extron Electronics group or folder. For information about program features, double-click on the UNIVSW
Help icon in the Extron Electronics group (or folder) or press the F1 key after UNIVSW is loaded.

Command/Response Table

The Command/Response table on Page 3 lists those commands which the SW6 VGA Audio switcher
recognizes as valid and the responses that will be returned to the Host. Error responses/causes and switcher
initiated messages are listed at the bottom of the table.

1

Duration of a momentary connection is defined as 100 milliseconds for the SW6 VGA Audio switcher.

2SW6 VGA Audio • Installation and Operation

RS-232 Command/Response Table

Audio Level

RS-232 COMMAND/RESPONSE TABLE

ABBREVIATIONS & DEFINITIONS:

= CR/LF, · = SPACE, A = AUDIO, AUTO = AUTOSWITCH,

ASCII to HEX Conversion Table

•

C = CHANNEL-AUDIO & VIDEO, F = MODE, V = VIDEO,
M = MAXIMUM INPUTS, QVER = SOFTWARE VERSION

X1

= Ø – 6 (INPUT Ø = MUTED OUTPUT)
= SOFTWARE VERSION X.XX

X2

= NUMERICAL VALUE –15 TO +9

X3

= Ø TO 15 (16 STEPS + OR –)

X4

X5

= MODE - 1 = FRONT PANEL, 2 = AUTO

X6

= 6 (TOTAL # OF INPUTS)

COMMAND RESPONSE

Command Description ASCII to Host

Select input channel

Example: Select Input channel #2 audio 2$ A2

Audio only

X1

Select input channel X1 Video only

Example: Select Input channel #5 video 5& V5

Select input channel X1 Audio and Video

Example: Select Input channel #6 A & V 6! C6

Set channel X1 positive audio gain to

Example: Set Input 2 Audio Gain = +7 2*7G IN2·AUD=+7

Set channel X1 attenuation to

Example: Set Input 3 Audio Gain = –13 3*13g IN3·AUD=–13

X4 X1*X4

X4 X1*X4

$ A

X1

& V

X1

! C

X1

G INX1·AUD=

g INX1·AUD=

X1

X1

X1

X3

X3

Set Front Panel Mode #1 F1
Set Auto-Switch Mode #2 F2

Information request i (Same as I below)
Information request I

Example: I V3·A3·F1·QVER1.23·M6

VX1·AX1·FX5·QVERX2·M

X6

Request for part number n (Same as N below)
Request for part number N N6Ø-26Ø-Ø1

Query Software Version q (Same as Q below)
Query Software Version Q

Example: Q QVER1.23

Explanation: Software version is 1.23 (example only)

QVER

X2

View input channel X1 Audio Gain vX1G (Same as V below)
View input channel

Example: V3G IN3·AUD=–13
Explanation: Input 3 Audio Gain = –13

Audio Gain VX1G INX1·AUD=

X1

X3

Error Response Codes

Invalid input channel (out of range) EØ1
Invalid input channel change (Autoswitch mode active) EØ6
Invalid mode parameter EØ9
Invalid command received by SW6 VGA Audio E1

Ø

Invalid value (out of range) E13

SW6 VGA Audio Switcher-Initiated Messages

When a local event takes place, such as a front panel operation, the SW6 VGA Audio switcher responds by
sending a message to the Host. The switcher initiated messages are listed below (underlined).

(C) COPYRIGHT 1998, EXTRON ELECTRONICS SW6 VGA AUDIO, Vx.xx

C1 The copyright message is initiated by the switcher when it is first powered ON. Vx.xx is the

software version number. This is followed by C1 identifying the current selected input = 1
(power-up default is input #1).

Cx This message is sent to the Host if the input is changed using the front panel. (x = new input #)

RECONFIG This message is sent to the Host when there is a change in the audio level setting.

The switcher does not expect a response from the Host to any of the above switcher-initiated messages.

SW6 VGA Audio • RS-232 Command Response Table3

Audio Level Control

The Audio Level Setting (Gain) for each input can be viewed,
changed and saved in memory using the switcher front panel
buttons or with RS-232 commands. The setting range is
–15 dB to +9 dB. To view or change the Audio level using the
front panel buttons, the Switcher AUDIO LED must be blinking. This is controlled by the AUDIO button. To
view or change the audio setting, first select the desired input, then press and hold the AUDIO button until
the AUDIO LED (above the AUDIO button) begins blinking. The current memory Audio Level Setting for the
selected input will be displayed in the input select LEDs (1-5). Each LED can display four possible values as
shown below.

The sum of the values represented by the five LEDs is the Audio Level setting for the selected input. The
+dB and/or the –dB LED will be ON to indicate the polarity of the Audio Level setting. Both LEDs ON
indicates a setting of zero (0). Examples using the LED symbols shown above follow:

In Example 1 above, the AUDIO LED is blinking indicating that LEDs 1-5 represent the audio level setting for
the selected input. Input 1-5 LEDs are ON, each has a value of 3. The –dB LED is ON indicating a negative
setting. The Audio level setting for the selected input is –15 dB (5 x 3 = 15).

In Example 2 above, the AUDIO LED is blinking indicating that LEDs 1-5 represent the audio setting for the
selected input. Input 1 LED is solid ON, value = 3. Input 2 LED is blinking fast, value = 2. Total Value is 3 +
2 = 5. The +dB LED is ON indicating a positive setting. The Audio level setting is +5 dB for the selected
input.

Input buttons 5 and 6 may be used to increase or decrease the current audio level setting. To change the
setting for the last example from +5 dB to –1 dB, with the AUDIO LED still blinking, press and release the
Input 6 (decrease) button six times. Each time the button is pressed and released, the LEDs change as
follows:

The displayed setting in the example above has changed to –1 dB. However, the stored setting in memory
will remain at +5 dB until the new setting is saved. Press and hold the AUDIO button to save the current
displayed setting in memory. Release the AUDIO button when the AUDIO LED goes OFF. The audio level
setting can also be loaded using RS-232 commands. See “RS-232 Command/Response Table” on page 3
for details.

Audio Level Reset

To reset the audio level to 0 dB for all inputs, press and hold the AUDIO button. The AUDIO LED will begin
to blink. Continue to hold the AUDIO button in (approximately 10 seconds) until the AUDIO LED goes OFF.
All input audio levels will be set to 0 dB.

SW6 VGA Audio • Audio Level 4