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AUDIO COMMANDS

211 AT Commands for EV-DO-EV3 Modems

<agc_exp_thres> Expansion threshold. This is the input energy threshold under which

expansion is applied. This parameter must be less than agc_compr_thres.

Meaningful range is 0x0 to 0x2580. Write 0 to disable the expander.

Value(agc_exp_thres) = 128

∗

(X+75) : X range is -75 to 0 dBm0mu.

<agc_exp_slope> Expansion slope. This is the expander gain slope when expansion is applied.

Meaningful range is 0xFF01 to 0xFFF6.

Value(agc_exp_slope) = 256 * X : X range is -0.04 to -0.996.

<agc_compr_thres> Compression threshold. This is the input energy threshold above which

compression is applied. Meaningful range is 0x0 to 0x2580. This parameter

must be greater than agc_exp_thres.

Value(agc_compr_thres) = 128

∗

(X+75) : X range is -75 to 0 dBm0mu.

<agc_compr_slope> Compression slope. This is the slope of the compressor gain when

compression is applied. Meaningful range is 0x8000 to 0xFFFF.

Value(agc_compr_sloop) = 65536 * X : X range is 0.50001 to 0.99999.

Notes

 These values are automatically saved in non-volatile memory.

Examples

AT#SHSAGCTX?

#SHSAGCTX: 2000,0,F00,FF29,2080,E666

AT#SHSAGCTX=?

#SHSAGCTX: (2000-FFFF),(0,FFFF),(0-2580),(FF01-FFF6),(0-2580),(8000-FFFF)

RX AGC Enable #SRXAGC

Set command sets the RX AGC enabling.

Read command returns the current RX AGC, in the format:

#SRXAGC: <mode>

Test command reports the supported range of values for <mode>.

Syntax

Command Command type

AT#SRXAGC=<mode> Set

AT#SRXAGC? Read

AT#SRXAGC=? Test

Parameters and Values

<mode>

0 Disables RX AGC. Default: 0.

1 Enables RX AGC.

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Multitech CDMA Guía de usuario Pagina 211