Specifications

AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
112 Proprietary and Confidential 2130616
!DASLNAGAIN
Supporting chipsets:
• All
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 .
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