AirPrime WP8548 / WP75xx / WP76xx / WP77xx AT Command Reference
226
Proprietary and Confidential - Contents subject to change
4118047
!MAXPWR
Set/report maximum Tx power
Set or report the maximum Tx power for a specific technology/band combination.
Caution:
Any adjustments of Tx power may impact regulatory certification of the module in
the host platform. The OEM is responsible for ensuring that the final module configuration in
the host platform meets all regulatory requirements.
Warning:
(WP8548/WP75xx devices only) To prevent incorrect SAR backoff values from
being used, any time !MAXPWR is used to change the max Tx power for a
specific technology/band combination,
must then be used to
update all previously defined SAR backoff values for the same technology/band
combination.
Failure to adhere to this warning can result in erroneous SAR backoff values for
that particular technology/band combination.
Note: Increasing Tx power affects the module’s current consumption and thermal perfor-
mance.
Password required:
Yes
Usage:
•
Execution (WCDMA/LTE):
AT!MAXPWR=<band>,<tech>,<max_tx_pwr>
Response:
OK
Purpose:
Set the maximum Tx power for the specified technology/band combination.
•
Execution (CDMA):
AT!MAXPWR=<band>,<tech>,<temperature_bin>,<max_tx_pwr>
Response:
OK
Purpose:
Set the maximum Tx power for the specified technology/band/temperature
bin combination.
•
Query (WCDMA/LTE):
AT!MAXPWR?<band>,<tech>
Response:
<max_tx_pwr> dBm
OK
Purpose:
Indicate the maximum Tx power for the specified technology/band combi-
nation.
•
Query (CDMA):
AT!MAXPWR?<band>,<tech>
Response:
Max Tx value for temperature bin 0 = <Max Tx power> dBm
...
Max Tx value for temperature bin 7 = <Max Tx power> dBm
OK
Purpose:
For the specified tech/band combination, display the offset from maximum
Tx power for the tech/band combination and the SAR limits for each
temperature bin. (For ‘bin’ definition, see <temperature_bin> description.)
Continued on next page)
Table 11-2: SAR Backoff and Thermal Control Command Details (Continued)
Command
Description
