AirPrime WP8548 / WP75xx / WP76xx / WP77xx AT Command Reference
228
Proprietary and Confidential - Contents subject to change
4118047
!SARBACKOFF
Set/report offset from maximum Tx power
Set or report the offset from maximum Tx power limit for a specific technology/band
combination.
Changes take place after the next modem reset.
Warning:
(WP8548/WP75xx devices only) To prevent incorrect SAR backoff values from
is used to change the max Tx power for a specific technology/band
combination, !SARBACKOFF must then be used to update all previously defined SAR
backoff values for the same technology/band combination.
• Note: SAR backoff values are calculated as MaxTxPower - BackoffOffset.
Failure to adhere to this warning can result in erroneous SAR backoff values for that
particular technology/band combination.
Password required:
Yes (see
for details)
Usage:
•
Execution (WCDMA, CDMA, LTE):
AT!SARBACKOFF=<Technology>,<Band>,<State>,<Backoff offset>
Response:
OK
Purpose:
Set the maximum Tx power for the tech/band/state combination.
•
Execution (GSM):
AT!SARBACKOFF=<Technology>,<Band>,<Slot>,<State>,<Modulation>,
<Backoff offset>
Response:
OK
Purpose:
Set the maximum Tx power for the tech/band/state combination.
•
Query (WCDMA, LTE):
AT!SARBACKOFF?<Technology>,<Band>,<State>
Response:
SAR Backoff: <offset> dBm
SAR Limit: <SAR limit> dBm
or
NV Not Set
OK
Purpose:
For the specified tech/band/state combination, display the offset from
maximum Tx power and the SAR limit.
(Continued on next page)
Table 11-2: SAR Backoff and Thermal Control Command Details (Continued)
Command
Description
