Sierra Wireless UMTS Spezifikationen Seite 113

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Test Commands
Rev. 8 May.12 Proprietary and Confidential 113
!DASPDM
Supporting chipsets:
All
Note: The modem must be in
FTM mode to use this
commanduse
!DAFTMACT
to enter FTM mode.
Set PDM value
Adjust the PDM (Pulse Duration Modulation), allowing you to apply frequency offset to
the LO (Local Oscillator) or Tx AGC.
When you adjust the Tx AGC (<PDM ID> = 2), the modem does not use a calibrated
result but uses the raw AGC value. The resulting change in Tx power will vary from
modem to modem, so it is usually necessary to tune this value by executing the
command repeatedly with different settings for the <PDMvalue> until you obtain the
desired Tx power.
When adjusting the tracking LO, you also need to execute the command repeatedly with
different settings for the <PDMvalue> until you obtain the desired frequency offset.
Note:
!DASBAND
and
!DASCHAN
must be issued before you can use
!DASPDM
.
Usage:
Execution: AT!DASPDM=<PDM ID>, <PDMvalue>
Response:
<PDM ID> <PDMvalue>
OK
Purpose: Set the tracking LO and Tx AGC PDM.
Parameters:
<PDM ID> (LO (Local Oscillator) or Tx AGC (Automatic Gain Control) to adjust)
0=Tracking LO adjust (GSM only)
2=Tx AGC adjust (WCDMA only)
4=Tracking LO adjust (WCDMA only)
<PDMvalue> (Frequency offset value)
If <PDM ID>=0: 0–511
If <PDM ID>=2: 0–511
If <PDM ID>=5: 0–65536
!DASTXOFF
Supporting chipsets:
All
Note: The modem must be in
FTM mode to use this
commanduse
!DAFTMACT
to enter FTM mode.
Turn Tx PA off
Turn the transceiver PA off, after it has been turned on with !DASTXON.
Note:
!DASBAND
and
!DASCHAN
must be issued before you can use
!DASTXOFF
.
Usage:
Execution: AT!DASTXOFF
Response:
OK
Purpose: Turn the Tx PA off.
Parameters:
None
Table 5-2: Test command details (Continued)
Command Description
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