Extron electronic MACXI, VGAXI User Manual

Installation and Operation

Installation and Operation

Connection Diagrams

SW VGA

The SW VGAxi / MACxi are 350 MHz bandwidth switchers are housed in rack mountable, 1U high,
half width metal enclosures with internal, universal 100 - 240 VAC 50/60 Hz power supplies. They
have built-in standard contact closure remote control capability with Tally through the 25 pin Contact
Remote connector (see Contact Remote pin assignments - Figure 4-A). Optional remote controls
available for both switcher types are the KP-10 wired remote with 25 foot cable, the IR-10 Infrared
remote control with an operating range of approximately 30 feet and the RS-232 2,4,6,8 Controller.
VGAxi switchers are available with 2, 4 or 6 inputs while the SW MACxi is only available with 2 inputs.
If more than 2 MAC inputs are required, the SW4 VGAxi or SW6 VGAxi may be used with VGA/MAC
adapters (see connection diagram in Figure 3-A and Part Numbers on Page 5).

Auto-switching

Auto-switching is a feature of the SW VGAxi and SW MACxi switchers that can be enabled/disabled
using a switch on the rear panel (see item E in Figure 2-A). With the AUTO/MANUAL switch in the
AUTO position, the front panel AUTO SWITCH ACTIVE LED is ON, the input selection buttons are
disabled, and the switcher automatically selects the highest number input that has sync pulses
available.

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Features

• Two, four or six inputs available, depending on the model

• 350 MHz bandwidth (-3 dB)

• Auto-switchable (switch selectable)

• 25 pin contact closure remote control connector

• Unselected inputs are 75 ohm terminated

• Tactile switch buttons with LEDs

• 1U, 1/2 rack width enclosure

• Internal universal power supply

• Input/Output connectors - VGAxi = Female 15 pin HD, MACxi = Female 15 pin D

• VGAxi is compatible with IBM PS/2, VGA, SuperVGA, XGA, VESA and XGA-2 computers. MAC and
Quadra may be used with SW 2 MACxi, or, if more than two inputs are required, SW 4/6 VGAxi
switchers may be used with optional MAC/VGA adapter (26-340-01 or 26-340-02).

PC Computer

PC Computer

MAC Computer

MAC Computer

Figure 3-A

VGA/MAC
Adapters

PC Computer

SW 6 VGAxi switcher diagram

PC Monitor

PC Computer

Figure 1-A

Front Panel Component Descriptions

The letters next to the following descriptions match the circled letters in Figure 1-A above.
A Auto Switch Active LED - ON = Auto switch mode active (Rear panel Auto/Manual switch UP)

B Input selection switches and LEDs - LED for selected input will be ON.

Extron • SW Switchers VGAxi / MACxi • User’s Guide

Page 1

Figure 2-A

Rear Panel Component Descriptions

The letters next to the following descriptions match the circled letters in Figure 2-A above.
C AC power connector - Standard IEC power connector (100 - 240 VAC 50/60 HZ)

D Power LED - ON if AC power is present
E AUTO/MANUAL switch - Down = normal mode, UP = Auto switch mode
F VGA Input connectors
G VGA Output connector
H Contact Remote connector - 25-pin contact closure connector - see Page 4 for details.

Extron • SW Switchers VGAxi / MACxi • User’s Guide

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Figure 3-B

Extron
Interface

MAC Computer

Extron
Interface

LCD Projector

MAC Computer

SW 2 MACxi switcher diagram

Extron • SW Switchers VGAxi / MACxi • User’s Guide

Page 3

Remote Connector

P

Specifications

REMOTE Connector - The Remote connector provides a way to control the VGAxi / MACxi switchers

using contact closure devices such as the following:

• Extron KP-10 (wired remote keypad, IR-10 (infrared remote), RS-232 2-4-6-8 (Host computer)

• Third Party Remote Control - Information below may be used to design a third party remote control.
Remote connector pin assignments are shown in the table below (Figure 4-A). To select a different

switcher input number through the remote connector, momentarily connect the pin for the desired input
number (#) to logic ground (pin 25).

NOTE __ The duration of a momentary connection is defined as 250 — 500 milli-seconds.

The Tally pins can be used for remote indication of the switcher's selected input. Tally #1 - #6 (pins
14 -19) will indicate the switcher's selected input # with a logic low (0 volts), the Tally pins are
normally at logic high (5 volts). For example, with switcher input #2 selected, the front panel LED for
that input would be ON and Tally #2 (pin 15) would be 0 volts while the remaining Tally pins would
be 5 volts.

The schematics shown below (Figure 4-B) may be used as a guide to design and build indicator
circuits for the Tally pins. An example of an LED circuit is shown at the top, two versions of
incandescent lamp driver circuits are shown below the LED circuit.

The +5 volt source on remote connector pin 13 is limited to 100mA, if a different voltage or a higher
current is required, an external voltage source will be necessary.

Looping is a configuration technique (see Figure 4-C) that enables the total number of inputs to a
switcher (A) to be increased by connecting its highest input to the output of another switcher (B). A
Loop control signal from switcher B (Loop Out - Remote connector pin 24) to switcher A (Loop In ­Remote connector pin 12) will cause switcher A to select its highest input when an input selection
is made on switcher B. If a third switcher (C) is added, its output would connect to the highest input
on switcher B and its Loop Out signal would connect to switcher B's Loop In. An input selection on
Switcher C would cause switcher B to select its highest input and signal switcher A to select its
highest input. The selected input on switcher C would be available at Switcher A's output. An input
selection on Switcher A would drop Switchers B and C out of the loop until a selection is made on
either B or C.

FIGURE 4-A

FIGURE 4-B

LED INDICATOR CIRCUIT

TALLY PIN

INCANDESCENT LAMP CIRCUITS

Using an
Opto-isolator
& External Power

+5V (PIN 13)

TALLY PIN

Using a Relay
& External
Power

EXTERNAL POWER

MANUFACTURER GENERAL LOW CURRENT
AROMAT DS2 TQ
ITT/PANASONIC R-Z-5C A5W
OMRON G5Y G6H

+5V (PIN 13)

LED

330 Ohm

EXTERNAL POWER

RESISTOR VALUE
DEPENDS ON CURRENT

330 Ohm

TALLY PIN

RECOMMENDED RELAYS

REQUIREMENT OF LAM

+5V (PIN 13)

1N916

Extron • SW Switchers VGAxi / MACxi • User’s Guide

N/C

Page 4

FIGURE 4-C

Output

A

B

C

VGA connector pin-9 is normally not used and does not exist in most cases, however, some
equipment/applications may require the signal on input connector pin-9 to be passed to output
connector pin-9. If this is a requirement, it will be necessary to solder one or more jumpers onto the
inside of the rear panel. The jumpers (JMP1 - JMP6) are shown on the Printed Circuit Board layout
below. The switcher model determines which jumper applies to which input as follows:

SW6 VGA
SW4 VGA
SW2 VGA

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 two cables connected to the circuit
board enabling it to be removed.

Figure 5-A

I

NPUT 1INPUT 2INPUT 3INPUT 4INPUT 5INPUT 6

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xi JMP1 JMP2 JMP3 JMP4 JMP5 JMP6

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xi JMP3 JMP4 JMP5 JMP6

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xi JMP5 JMP6

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JMP5

JMP6

JMP3

JMP1

JMP2JMP4

Specifications

Video Input Video Signal Level _ 0 to 2 volts p-p

Frequency Range (H. Sync) _ 15-145 kHz
Frequency Range (V. Sync) _ 30-170 Hz

RGB Video Bandwidth _ 350 MHz (-3 dB) (VGAxi and M

Termination Impedance _ 75 Ohms

Connectors Input and Output VGA

Control System Contact Closure _ Momentary (100 ms min.),

General Operation Temperature _ 0°-50° C

Power Supply Inter nal _ 100-240 VAC 50/60 Hz, 0.2A max.

Part Numbers SW2 VGA

VGA/MAC Adapter (Composite Video) _ 26-340-01

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

KP-10 wired keypad remote control _ 60-111-01

Extron Electronics

1230 South Lewis Street
Anaheim, CA 92805

SM

714.491.1500 FAX [phone]

USA

Sync Input Impedance _ 510 Ohms

Input and Output M

Storage Temperature _ -40° to +70° C

MTBF Demonstrated _ 30,000 Hours

IR-10 Infrared remote control _ 70-036-01

RS-232 2-4-6-8 Controller _ 60-112-01

Video Gain _ Unity

Input Impedance _ 75 Ohms

Output Impedance _ 75 Ohms

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15 pin HD D-Sub (Female)

AC

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Contact Remote _ 25 pin D-Sub

Loop Signal _ Momentary low, 1 ms min, 5 ms max

Humidity _ 10% to 90% non condensing

Vibration _ NSTA 1A in carton

Approvals _ CE, UL Listed, FCC Class A

Dimensions _ 8.75" W x 9.5" D x 1.75" H

Shipping Weight _ 3 lbs (1.4 kgs) - VGA

Warranty _ 2 years parts and labor

SW4 VGA
SW6 VGA

SW2 MAC

Extron Electronics, Europe

Beeldschermweg 6C
3821 AH Amersfoort
+31.33.453.4040 FAX [phone]

The Netherlands

15 pin D-Sub (Female)

_ w/Tally feedback

_ 22.2 cm W x 24 cm D x 4.4 cm H

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60-257-01

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60-258-01

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60-259-01

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60-261-01

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and M

Extron Electronics, Asia

41B Kreta Ayer Road
Singapore 089003
+65.226.0015 FAX [phone]

Singapore

AC

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)

AC

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Refer to the safety instructions
in the literature that came with

this equipment.

Written &
Printed in

the USA

89-05

68-375-01

Rev. A

USER’S GUIDE

SW SWITCHERS – VGAxi

SW2 VGA
SW4 VGA
SW6 VGA
SW2 MAC

/ MACxi

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