Sierra Wireless AirPrime MiniCard MC73xx/8805 Series, At Command Reference

Page: 75 / 158

Test Commands
Rev. 1 Sep.13 Proprietary and Confidential 75
!DASLNAGAIN Set LNA gain state
Set the LNA (Low Noise Amplifier) range for the main or diversity path (if applicable), in
either WCDMA or GSM mode.
Note:
!DASBAND
and
!DASCHAN
must be issued before you can use
!DASLNAGAIN
.
Password required:
Yes
Usage:
•
Execution:
AT!LNAGAIN=<gain index>[, <path>]
Response:
<gain index>
OK
Purpose: Set the LNA gain state for either the main or diversity paths.
Parameters:
<gain index>
•
0=R0 (highest gain)
Approximate switch from low to high gain: WCDMA (< -72 dBm);
GSM (< -73 dBm)
•
1=R1
Approximate switch from low to high gain: WCDMA (< -72 up to -46 dBm);
GSM (< -73 up to -58 dBm)
•
2=R2
Approximate switch from low to high gain: WCDMA (< -46 up to -36 dBm);
GSM (< -58 up to -41 dBm)
•
3=R3 (lowest gain)
Approximate switch from low to high gain: WCDMA (> -36 dBm);
GSM (< -41 dBm)
Note: The LNA gain state is set based on the expected receive power level. The gain
state values listed above are provided as a guideline. The values are approximations
and subject to change over time. The values are different than those from high to low
gain.
<path> (For modules supporting diversity)
•
0=Main path
•
1=Secondary (diversity) path
Table 5-2: Test command details (Continued)
Command Description