B01GAINGIM>3
Increase incoming gain on all mic inputs
by 3 dB.
B01GAINI1a
B01GAINI2b
B01GAINI3c
B01GAINI4d ,
where a, b, c, and d are the new values of
each of the mic inputs. If this command was
issued after the example above, then the status
messages would be:
B01GAINI110
B01GAINI210
B01GAINI310
B01GAINI410 .
B01GAINGIM?
Query gains on all mic inputs.
B01GAINI1a
B01GAINI2b
B01GAINI3c
B01GAINI4d ,
where a, b, c, and d are the new values of
each of the mic inputs. If this command was
issued after the example above, then the status
messages would be:
B01GAINI110
B01GAINI210
B01GAINI310
B01GAINI410 .
8.60. GAINI -- Set Input Gain
The input channels of the Vortex pass through an analog gain stage before reaching the analog to digital
converter. The gain of this stage is adjustable via a digitally controlled analog trim pot. It is important that
this gain is set correctly in order to maximize the resolution and quality of the signal at the analog to digital
converter. This command lets you adjust the gain of these input gain stages. For volume control, the
FADERI command can be used to adjust the signal level in the digital domain without affecting the
calibration.
This command also adjusts the gain of the input signal coming from the telephone interface.
The following table shows the relationship between the input gain settings (via GAINI and
MIC) and the
nominal level expected at each of the inputs.
Input Channel
MIC Setting GAINI Setting (dB)
Expected level at Input (dBu)
1-4 1 (mic level) 0 to 30 0 to -30
1-4 0 (line level) 0 to 30 33 to 3
A-D N/A (line level) 0 to 20 0 to -20
The GAINIT command has a range of -100 to +20.
This command is a channel integer command. See
Section 6.3 and Section 6.2 for more information on this
type of command. The minimum and maximum values for this command are 0 and 20 or 30, respectively.
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