Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 573)

Audio Commands
Digital Gain Control +WDGR
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WM_DEV_OAT_UGD_049 - 001 VOLUME 4 August 23, 2007
21.8.3 Parameters and Defined Values
: audio configuration
1 HWL_AUDIO_DSP_RX_PGA_CONF
2 HWL_AUDIO_DSP_RX_VOL_CONF
: reception gain
range: 0-255
(default value: 64)
21.8.4 Parameter Storage
The parameters are stored in EEPROM without using the AT&W command The
default value can be restored using AT&F and "AT+VIP=1".
21.8.5 Examples
Command Responses
AT+WDGR=? +WDGR: (1-2),(0-255)
OK
Note: Possible values
AT+WDGR=1,25 OK
Note: PGA configured with a gain of 25
AT+WDGR? +WDGR: 1,25
+WDGR: 2,64
OK