Extron electronics MTPX Plus Series, User Manual

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Operation, cont’d
MTPX Plus Twisted Pair Matrix Switchers • Operation
3-32
Muting and unmuting audio/RS-232 outputs
Individual audio or RS-232 outputs can be muted or unmuted as follows:
N Mutes are protected when front panel Lock mode 2 is selected. You can view the
status of the output (muted or unmuted) in Lock mode 2 but you cannot change
it from the front panel. See “Setting the front panel Locks ( Executive modes)”
on page 3-46.
1 . Press the Esc button to clear any input button indications, output button
indications, or control button indications that may be on.
2 . Press and release the View button.
3 . If necessary to select audio and deselect video, press the Video button and/or
the Audio button.
4 . One at a time, press and hold the button(s) for the desired output(s) for
approximately 2 seconds. The output button(s) for the selected output(s)
blink to indicate the mute or return to their previous state to indicate the
unmute.
5
. Press and release the View button to return to normal switcher operation.
N • You can mute only audio or RS-232 (not video) outputs. Pressing and
releasing the Video button and the Audio button toggles each selection on
and off.
• When you enter View-only mode, the output LEDs turn on for all outputs
without ties.
• If the audio/RS-232 wire pair of the selected input is defined as RS-232 (see
“Defining the audio/RS-232 wire pair” on page 3-49), the serial output is
muted.
• Mutes are saved to non-volatile memory. When power is removed and
restored, the mute settings are retained.
Example 8: Muting and unmuting an audio/RS-232 output
In the following example, several switcher outputs are muted and unmuted. The
steps show the front panel indications that result from your action.
1 . Press and release the Esc button (figure 3-45).
C O N T R O L
PRESET ENTER
ESC VIEW
Press the Esc button to clear all selections.
The button flashes once.
Figure 3-45 — Clear all selections
2 . Press and release the View button to enter View-only mode. The View button
lights red.
3 . To select audio (or RS-232) for viewing and muting, if necessary, press and
release the Audio button (figure 3-46).
N
This example shows the front panel indications if example 1, example 2, and
example 3 have been completed.