VAR4 / VAR12 / VAR20 - Operation Manual
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Page 84 of 308
sue: 03 complete, approved
7.2.5 Input Gain and the Line Sensitivity Configuration
The Mic/Line inputs have switchable sensitivity in order to accept microphone or line level signals, and have
adjustable analogue gain analogue. The analogue gain settings are non-volatile, are and retained even after
power failure and/or processor failure.
In order to set the input gain and the line sensitivity proceed as follows.
1. Select ConfigurationÆSystemÆRouterÆInputsÆMic/Line.
2. Scroll the Mic/Line input list and select the required input:
[I/P #01 – MIC/LINE 01]
Default value: input 1
Possible inputs: 01 to 04 for VAR4
01 to 12 for VAR12
01 to 20 for VAR20
Note: The input name is shown on the right side of the display. The input name above is the Mic/Line
input 1 default name, however this may have been changed according to each site’s
configuration.
3. The configured Mic/Line type is displayed.
The input type may be changed, as described in Section “7.1 Mic/Line Input Type Configuration”.
4. Press the SELECT key to display the next sub-menu.
5. Move to, and select the Audio menu item, which is shown in different positions for different input types
as follows:
‘Paging Microphone’ and ‘Zoned Fire Microphone’
Buttons [Audio] Ctrl Name
‘Single Button Microphone’
PTT [Audio] Ctrl Name
‘Fire Microphone’ and ‘Miscellaneous Input’
[Audio] Ctrl Name
‘Network Channel’
[Audio] Name
6. Move to, and select the Gain menu item.
Surv EQ Fade Chime [Gain]
7. Move to, and select the PreAmp menu item:
[PreAmp] O/pGains
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