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Hall Research Technologies, Inc.
3.1.7 To set the audio output level to high (+4dBu)
This function is applicable to units with Pro Audio option only. The matrix’s
Audio outputs can be globally set for high pro-audio line levels of (+4dBu).
Setting the pro output affects all the outputs simultaneously.
Press and hold the AUD button for approximately 3 seconds until the backlit LED
starts to blink. Either the
▲
(for high output) or the
▼
(for low output) button
LED should be lit indicating a Pro-audio level (of +4dBu) or a standard-audio
level setting (of -10dBV).
Note
If you select an input channel in this mode, the Output level setting
mode will be terminated and the unit will enter input gain attenuation
setting. To go back to the audio-level changing mode again, unselect
the current input channel by pressing it once
3.1.8 To adjust audio input gain and attenuation
This function is applicable to units with Pro Audio option only. It is very useful
for ensuring no noticeable volume difference among the audio sources, and
compatibility with a mixture of consumer and pro line levels at the inputs.
Press and hold the AUD button for approximately 3 seconds until the backlit LED
starts to blink. Press and release an input button whose audio you want to adjust.
The associated input LED lights up, the matrix will temporarily route the audio
input from the selected channel to audio output #1 and monitor its level on the
front panel. Any other outputs tied to this selected input channel stay connected
during this adjustment procedure.
The installer can connect an external VU meter to output #1 or rely on the front
panel (bottom row of lights) that would act as a digital VU meter.
In this mode both rows of 16 LED’s on the front panel serve a function.
The top row not only shows the channel for which you are adjusting the audio
(solid lit), but it also shows audio volume setting blinking position. The bottom
row (output LED’s) acts as a VU meter.
Note about VU Meter Function
The front panel VU meter function is available on both the 16x16 and the
8x8 units with standard (A) or Pro (AP) audio versions. However on the
standard version the
▲
and
▼
buttons do not change the volume level.
The user can do that at the source and use the matrix to monitor the level.
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