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Polycom Vortex EF2280 Manual

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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.
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)
1-8 1 (mic level) 0 to 30 0 to -30
1-8 0 (line level) 0 to 30 33 to 3
A-D N/A (line level) 0 to 20 0 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.
This command is saved to non-volatile memory only as part of a preset. The state of this command will be
restored after power-up only if a preset is saved and that preset is set to be the power-on preset.
Example Description Status Message
F01GAINI210
Set gain on
input 2 to 10
dB.
F01GAINI210
F01GAINI2?
Query the
gain on
input 2 .
F01GAINI2xB01GAINITxS01GAINIAxQ01GAINIAxT01GAINITx,
where x is a number between 0 and 20 , depending on the current
setting of the gain on input channel 2 .
F01GAINI*6
Set gain on
all inputs (1-
8, A-D) to 6
dB.
F01GAINI*èèèèèèèèèèèè
F01GAINI*ääääääääìììì
Set gain on
input
channels 1-8
to 0 dB and
gain on
input
channels A-
D to 9 dB.
F01GAINI*ääääääääìììì
F01GAINI*?
Query gain
on all inputs
(1-8, A-D) .
F01GAINI*abcdefghijkl, where a-l are each between ä and ÿ,
depending on the current setting of the gains for each of the twelve
input channels.
8.51. GAINO -- Set Output Gain
This command sets or queries the gain (in dB) of the twelve output channels (1-8, A-D) .
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 -100 and 20, respectively.
This command is saved to non-volatile memory only as part of a preset. The state of this command will be
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