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MMX 32 VGA A • Installation and OperationMMX 32 VGA A • Installation and Operation
Installation and Operation, cont’d
2-8
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.
To verify the polarity before connection, plug in the power
supply with no load and check the output with a voltmeter.
The two power cord wires must be kept separate
while the power supply is plugged in. Remove
power before wiring.
As an alternative, an Extron P/S 123 Universal 12 VDC Power
Supply, part #60-814-01, can power multiple MMXs or other
Extron 12 VDC devices, using only one AC power connector.
CAUTION
Do not daisy chain power to this unit.
Front Panel Features and Operation
MMX 32 VGA A
OUTPUT 1
213
OUTPUT 2
213
2
1
Figure 2-8 — Front panel features
1
Input selector buttons and LEDs for output 1 — Press the
button corresponding to the desired input. The Input LED for
that input lights.
2
Input selector buttons and LEDs for output 2 — Press the
button corresponding to the desired input. The Input LED for
that input lights.
When power is applied, the LEDs light sequentially from
left to right. Then the LEDs corresponding to the last
valid input selections light. If audio is broken away via
RS-232, the LED corresponding to the audio source
flashes.
Executive mode
Putting the switcher into executive mode locks the front panel.
While the switcher is in executive mode, the user can select
inputs only through a remote device.
To activate executive mode, press the following buttons
simultaneously and hold for at least three seconds:
• Input 1 button for output 1
• Input 3 button for output 2
The front panel LEDs flash to indicate that executive mode is
active.
Repeat this procedure to unlock the front panel.
System reset
To clear all user settings and reset the switcher to its factory
settings, press and hold the input 3 button for output 2 while
you power up the switcher. Continue to hold the button while
the switcher lights the front panel LEDs sequentially from left to
right.
Audio switching
When you select an input by pressing a front panel selector
button, the audio and video signals from that input are routed
together to the appropriate output.
The MMX 32 VGA A also features audio breakaway through the
Extron Simple Instruction Set or the Extron Universal Switcher
Control Program (see chapter 3, “Remote Control”, for details).
When audio breakaway is active, the front panel LED
corresponding to the audio source flashes, while the LED
corresponding to the video source lights steadily.
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