Specifications

Rev. 8 May.12 Proprietary and Confidential 259

13: SAR Backoff and Thermal Control

Commands

Introduction

This chapter describes:

• SAR-related commands (Specific Absorption Rate)—SAR

commands are used to meet regulatory requirements for the

OEM host device by managing the modem’s SAR backoff state.

OEMs should carefully evaluate their use of these commands

and their impact on device operation.

Note: Operators may require OEMs to disclose SAR settings and theory of

operation for applicable certifications.

• Thermal mitigation-related commands—These commands may

affect the host device’s performance. OEMs should carefully

evalute their use of these commands to ensure that the device

meets performance expectations.

Command summary

The table below lists the commands described in this chapter.

Table 13-1: SAR backoff and thermal control commands

Command Description Page

!MAXPWR Set/report maximum Tx power 260

!SARBACKOFF Set/report maximum Tx power limit 261

!SARSTATE Set/report SAR backoff state 262

!SARSTATEDFLT Set/report default SAR backoff state 262

!THERMCONFIG Set/report thermal mitigation configuration options 263

!THERMDELTATX Set/report amount to reduce maximum Tx power 264

!THERMDELTATXTEMP Set/report amount power backoff temperature threshold 265

!THERMENABLE Enable/disable thermal mitigation 265

!THERMINFO Display thermal mitigation information 266

!THERMTHRESHOLD Set/report thermal threshold, mitigation threshold, and

hysteresis

267

!THERMTIMERS Set/report thermal mitigation algorithm timer details 268