Specifications
AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
264 Proprietary and Confidential 2130616
!THERMDELTATX
Supporting chipsets:
• MDM8200
• MDM8220 (min f/w rev:
N2.0 Release 6)
• MDM9200 (min f/w rev:
M1.0 Release 3,
X3.0 Beta 6)
Set/report amount to reduce maximum Tx power
Set or report the amount of power to subtract from maximum Tx power when the device
is in mitigation state.
The Tx power will repeatedly be stepped-down by this amount as long as the
temperature remains above the mitigation threshold. See !THERMTIMERS on page 268
for details.
Usage:
• Execution (MDM8200 only):
AT!THERMDELTATX=<delta tx>
Execution (MDM8220/MDM9200 only):
AT!THERMDELTATX=<delta tx>[, <max backoff>, <time for non
backoff>, <time for backoff>, <step timer>]
Response:
OK
Purpose: Set the amount of power to subtract from maximum Tx power.
• Query: AT!THERMDELTATX?
Response (MDM8200 only):
Delta Tx power (1/12 dB)=<delta tx>
OK
Response (MDM8220/MDM9200 only):
Delta Tx power (dB)=<delta tx>
Max backoff (dB) = <max backoff>
time for non-backoff value of power (ms) = <time for non
backoff>
time for backoff value of power (ms) = <time for backoff>
timer for each step of backoff (ms) = <step timer>
OK
Purpose: Display the amount to subtract from maximum Tx power, and,
depending on chipset, backoff time values.
• Query List: AT!THERMDELTATX=?
Purpose: Display the execution command format and parameter values.
Parameters:
<delta tx> (Power subtracted from maximum Tx power)
• Units:
• MDM8200—1/12 dB
• MDM8220/MDM9200—dB
• Valid range:
• MDM8200—0–120 (corresponds to 0–10 dB)
• MDM8220/MDM9200—0–<max backoff>
<max backoff> (MDM8220/MDM9200 only—Maximum value that can be used to set
<delta tx>)
• Units: dB
<time for non-backoff> (MDM8220/MDM9200 only—Length of time that device runs at
regular power level before switching to the reduced level of the current backoff step.)
• Units: ms
<time for backoff> (MDM8220/MDM9200 only—Length of time that device runs at the
reduced power level of the current backoff step, before switching to regular power level.)
• Units: ms
<step timer> (MDM8220/MDM9200 only—Length of time for each backoff step.)
• Units: ms
Table 13-2: Thermal mitigation command details (Continued)
Command Description