Specifications

Thermal Mitigation Commands
Rev. 8 May.12 Proprietary and Confidential 261
!SARBACKOFF
Supporting chipsets:
• MDM6200 (min f/w rev:
P1_0_0_8)
• MDM9200
• MDM9600
Set/report maximum Tx power limit
Set or report the maximum Tx power limit for a specific band/technology/state
combination.
Usage:
• Execution (WCDMA/CDMA/LTE):
AT!SARBACKOFF=<tech>,<band>,<state>,<offset>
Execution (GSM):
AT!SARBACKOFF=<tech>,<band>,<slot>,<state>,<modulation>,
<offset>
Response:
OK
Purpose: Set the SAR backoff values for a specific band/technology combi-
nation.
• Query: AT!SARBACKOFF?<tech>,<band>,<state>
Response:
<backoff> dBm
OK
Purpose: Indicate the maximum Tx power limit for the specified band/
technology/state combination.
• Query list: AT!SARBACKOFF=?<tech>
Purpose: Display the execution and query formats with valid parameter values
for the requested technology.
Parameters:
<tech> (Network technology)
• 0=WCDMA
• 1=CDMA (Note: Not supported by MDM6200)
• 2=LTE (Note: Not supported by MDM6200)
• 3=GSM
<band> (RF band)
• 3GPP band number. For a full listing of 3GPP band numbers, see Ta b le 4- 2 on
page 280.
• Band support is product specific—see the device’s Product Specification or
Product Technical Specification document for details.
• Valid range: 0–40
<state> (SAR backoff state setting)
• 0=No backoff
• 1–8=Backoff state 1 to 8
<offset> (Offset from maximum Tx power, in dBm)
• Range is technology-dependent. Use Query list command format to display valid
values.
• Values may be integer or decimal (for example, “4”, “6.8”)
• Valid values—Execute the Query List command format to view valid values.
• (MDM6200) 0–81 (WCDMA); 0–8 (GSM)
<slot> (GSM only—Tx slot (GPRS/EDGE))
• Valid values:
• (MDM6200) 1–4
• (All others) 1–5
<modulation> (GSM only—Modulation method)
• 0=GMSK (GPRS)
• 1=8PSK (EDGE)
Table 13-2: Thermal mitigation command details (Continued)
Command Description