Adjusting.the.input.audio.level; Audio.outputs - Extron electronics MPX 423 A User Manual

Operation, cont'd
Adjusting the input audio level
The audio level of each input can be adjusted from -18 to +24 dB. The factory
default level is 0 dB.
There is only one audio settting which is applied to both the left and right audio
inputs of the selected input device.
Audio level settings are stored in non-volatile memory, and retained through a
power cycle.
When performing the procedure below, you may monitor the Input Audio/Gain
Attenuation level via RS-232 using HyperTerminal (see chapter 4).
To enter the audio adjust mode and adjust an input audio level:
1.
2.
C
C
3.
4.
C
Audio outputs
Balanced or unbalanced audio output is available on the MPX 423 A using a 3.5
mm, 5-pole captive screw connector, wired as shown below.
Tip
See caution
Sleeve
Tip
See caution
Unbalanced Input / Output
Figure 3-4 — 3.5 mm, 5-pole captive screw audio connectors
C
3-8 MPX 423 A • Operation
Press and hold the Mute button for 2 seconds. The I/O Audio LED and one of
the input LEDs (ex: input 7) flashes indicating the audio adjust mode.
Press the desired input button. The selected button's LED begins flashing.
There is no indication of the audio level available by viewing the front
panel. You may monitor the volume level adjustments via an RS-232
connection and HyperTerminal (see chapter 4).
Pressing an input button while in audio adjust mode will
activate / de-activate a tie.
Turn the Volume control knob clockwise to increase volume and
counterclockwise to decrease the volume level of the selected input.
Press and release the I/O button or wait 30 seconds for the unit to exit the
audio adjustment mode.
Pressing the Mute button while in audio adjust mode will activate the
mute for output 1.
Tip
Ring
Sleeve (s)
Tip
Ring
Balanced Input / Output
Connect the sleeve to ground (Gnd). Connecting the sleeve to a negative
(-) terminal damages the audio output circuits.