Extron electronic MTPX Plus Series Muting and unmuting audio/RS-232 outputs, Operation, cont’d

Operation, cont’d

Muting and unmuting audio/RS-232 outputs

Individual audio or RS-232 outputs can be muted or unmuted as follows:

NMutes 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-onlymode, 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).

Press the Esc button to clear all selections.

C O N T R O L

ENTER PRESET VIEW ESC

The button flashes once.

Figure 3-45 — Clear all selections

2.	Press and release the View button to enter View-onlymode. 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).

NThis example shows the front panel indications if example 1, example 2, and example 3 have been completed.

3-32 MTPX Plus Twisted Pair Matrix Switchers • Operation