Specifications

Modem Status, Customization, and Reset Commands
Rev. 8 May.12 Proprietary and Confidential 73
!SCANTHRESH
Supporting chipsets:
• MDM6270
• MSM6290
• QSC6270
Set/report WCDMA Scan Threshold
Set the WCDMA Scan Threshold.
The scan threshold is set to -103 dBm by default, but can be adjusted if necessary to
improve scan performance by reducing ‘false positives’.
During WCDMA acquisition, L1 (stack layer 1) uses a raw scan every ten channels to
discover potential candidates, followed by a finer scan based on those candidates. For
embedded modules in host devices, the default threshold can be very close to the noise
floor of the host. As a result, there are a number of ‘false positives’, which significantly
slows down the scan time for WCDMA.
Caution: If you adjust the scan threshold to reduce or eliminate false positives, you
also reduce the ability of the UE to acquire systems with weak signal strength.
Usage:
• Execution: AT!SCANTHRESH=<threshold>
Response:
OK
Purpose: Set the threshold value
• Query: AT!SCANTHRESH?
Response:
!SCANTHRESH:
Scan Threshold (dBm): <threshold>
OK
or
!SCANTHRESH:
Scan Threshold is not set, default is used.
OK
Purpose: Indicate the current <threshold> setting.
Parameters:
<threshold> (WCDMA Scan Threshold, in dBm)
• Valid range: -103 to -98
• Default value: -103
Table 3-2: Modem status, customization, and reset commands (Continued)
Command Description