Specifications

AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
98 Proprietary and Confidential 2130616
!CHAN
Supporting chipsets:
• MDM9600
Note: The modem must be in
FTM mode to use this
command—use
!DAFTMACT
to enter FTM mode.
Tune synthesizer to channel/band
This command tunes the synthesizer to a specified channel and band, or reports the
current tuning (including changes made using !KEYON on page 121). If the band is
omitted, the modem uses the current band setting, changing only the channel.
The channel setting on entry to diagnostic mode is determined by the prior activity of the
modem.
Usage:
• Execution: AT!CHAN=<channel>[,<band>]
Response:
OK
Purpose: Tune the synthesizer to the specified channel and band.
• Query: AT!CHAN?
Response:
Channel = <channel>
OK
Purpose: Return the last channel that the synthesizer attempted to tune to.
Parameters:
<channel>
• 0–799, 991–1023 (Cellular)
• 0–1200 (PCS)
<band>
• 0=US Cellular
• 1=US PCS
• 2=GPS
!DAAGCTON
Supporting chipsets:
• MDM8200
• MSM6290
Return C/N (carrier to noise ratio) while in factory test mode
Return the carrier-to-noise ratio when the modem is in FTM (Factory Test Mode).
Usage:
• Query: AT!DAAGCTON
Response:
<c_n> <errorcode>
OK
Purpose: Returns carrier-to-noise ratio.
Parameters:
<c_n> (Carrier-to-noise ratio in dB/Hz)
• Format: x.x (fixed point decimal)
<errorcode>
• 0=OK
Table 5-2: Test command details (Continued)
Command Description