User's Manual

AT Command Set
MC35_ATC_01_V04.00 Page 196 of 238 02.04.2002
8.21 AT^SNFI Set microphone path parameters
Test command
AT^SNFI=?
Response
^SNFI: (list of supported <inBbcGain>s), (list of supported <inCali-
brate>s) OK
Parameters
See write command
Read command
AT^SNFI?
Response
^SNFI: < inBbcGain >, <inCalibrate> OK
Parameters
See write command
Write command
AT^SNFI=<inBbcGain>,
<inCalibrate>
Response
TA sets microphone path amplifying.
OK
Parameters
<inBbcGain> Setting for ADC gain Amplifier 0 - 7 (0=0dB, 7=42dB,
8 steps of 6 dB)
<inCalibrate> Multiplication factor 0 – 32767 for input samples at-
tenuation=20*log (inCalibrate/32767)
Reference
Siemens
Note
• Write command works only in audio modes 2 to 6!
• Read and write options of this command refer to the active audio
mode.
• The range of <inCalibrate> is up to 65535 but will be suppressed to
32767. Values above <inCalibrate> = 65535 will cause a failure
• Changed values have to be stored with ^SNFW.
• Attention! When you adjust audio parameters avoid exceeding the
maximum allowed level. Bear in mind that exposure to excessive lev-
els of noise can cause physical damage to users!
• The default values are customer specific.