Extron electronic MACXI, VGAXI manual Specifications

Remote Connector

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.

Specifications

VGA connector pin-9is 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:

	INPUT 1	INPUT 2	INPUT 3	INPUT 4	INPUT 5	INPUT 6
SW6 VGAxi	JMP1	JMP2	JMP3	JMP4	JMP5	JMP6
SW4 VGAxi	JMP3	JMP4	JMP5	JMP6
SW2 VGAxi	JMP5	JMP6

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.

JMP5	JMP3	JMP1
JMP6	JMP4	JMP2
Figure 5-A

Specifications

Video	Input Video Signal Level _	0 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) (VGAxi and MACxi)
	Input Impedance _ 75		Ohms
	Output Impedance _	75	Ohms
	Termination Impedance _	75	Ohms
	Sync Input Impedance _	510 Ohms
Connectors	Input and Output VGAxi __ 15		pin HD D-Sub (Female)

USER’S GUIDE

FIGURE 4-A

FIGURE 4-B

LED INDICATOR CIRCUIT

+5V (PIN 13)

LED

TALLY PIN 330 Ohm

FIGURE 4-C

Output

	Input and Output MACxi __ 15 pin D-Sub (Female)
	Contact Remote _		25 pin D-Sub
Control System	Contact Closure _		Momentary (100 ms min.),
		_	w/Tally feedback
		Loop Signal _	Momentary low, 1 ms min, 5 ms max
General	Operation	Temperature _	0°-50° C
	Storage	Temperature _	-40° to +70° C
		Humidity _	10% to 90% non condensing
	MTBF Demonstrated _ 30,000 Hours
		Vibration _	NSTA 1A in carton

INCANDESCENT LAMP CIRCUITS

EXTERNAL POWER

Using an

Opto-isolator		RESISTOR VALUE
& External Power		DEPENDS ON CURRENT
		REQUIREMENT OF LAMP
	330 Ohm
+5V (PIN 13)
TALLY PIN
		+5V (PIN 13)
Using a Relay		N/C
& External
Power	1N916

TALLY PIN

EXTERNAL POWER

RECOMMENDED RELAYS

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

A

B

C

	Approvals _	CE, UL Listed, FCC Class A
Power Supply	Internal _	100-240 VAC 50/60 Hz, 0.2A max.
	Dimensions _	8.75" W x 9.5" D x 1.75" H
	_	22.2 cm W x 24 cm D x 4.4 cm H
	Shipping Weight _	3 lbs (1.4 kgs) - VGAxi and MACxi
	Warranty _	2 years parts and labor
Part Numbers	SW2 VGAxi __ 60-257-01
	SW4 VGAxi __ 60-258-01
	SW6 VGAxi __ 60-259-01
	SW2 MACxi __ 60-261-01
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
IR-10 Infrared remote control _		70-036-01	Refer to the safety instructions
RS-232	2-4-6-8 Controller _	60-112-01
			in the literature that came with
				this equipment.
Extron Electronics	Extron Electronics, Europe		Extron Electronics, Asia	Written &
1230 South Lewis Street	Beeldschermweg 6C		41B Kreta Ayer Road	Printedin
Anaheim, CA 92805	3821 AH Amersfoort		Singapore 089003	theUSA
				89-05

SW SWITCHERS – VGA xi / MACxi

SW2 VGAxi

SW4 VGAxi

SW6 VGAxi

SW2 MACxi

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

Page 4

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			Rev. A