User Guide Manual

Operation, cont’d
MTPX Twisted Pair Matrix Switchers • Operation
3-32
PRELIMINARY
Viewing and adjusting the local output volume
N
Output volume is protected when front panel Lock mode 2 is selected. You can
view the volume in Lock mode 2 but not adjust it from the front panel. See
“Setting the front panel locks (Executive modes)” on page 3-40.
The audio level of each local output can be displayed and adjusted through a range
of100%(noattenuation)to0%(maximum[76dB]attenuation).Theaudiolevelcan
be adjusted from the front panel or via serial port control. The default is 100% (no
attenuation).
1
. Press the Esc button to clear any input LEDs, output LEDs, or control LEDs
that are lit.
2
. To enter the Audio mode, press and hold the Audio button until the LED
begins to blink, then release the button.
3
. Press and release an output button for an output that has a local output to select
an output. The input LEDs display the volume level for the selected output.
The switchers indicate the volume differently, depending on the number of
input LEDs, but as a general rule, the more LEDs that are lit, the higher the
volume. The fewer LEDs that are lit, the lower the volume.
For a more detailed analysis of decoding the displayed value, see “Reading
the displayed volume” on the next page.
4
. Press and release the Esc (
>
) and View (
<
) buttons to increase and decrease
the local audio volume by 1 dB per each push of the button.
Or, press and hold the button to change the level at a rate of 3 dB per second
until the button is released or the upper or lower limit is reached.
5
. Press and release the Audio button to save the audio settings and exit the
Audio mode. The Audio button stops blinking.
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 • Onlythevolumeforthelocalaudiooutputs(outputs1through4[matrix
sizes816,168,and1616]oroutputs1through8[matrixsizes1632,3216,
and 3232]) is adjustable. Outputs outside the local range cannot be selected
in step 3.
• Thereisoneaudiovolumelevelsettingperlocaloutput.Theaudiolevel
setting is shared by the left and right audio inputs.
• Theaudiovolumelevelsarestoredinnon-volatilememory.Whenpoweris
removed and restored, the audio level settings are retained.
• Exiting Audio mode by pressing the Audio button always returns the
I/O LEDs to both Video and Audio lit.
• PressingtheEnterorPresetbuttonalsoexitsAudio mode. Pressing the
Preset button changes to Recall Preset mode.