Turning On The Tx In Gsm Mode; Turning On The Rx And Reading Rssi In Wcdma Mode - Sierra Wireless MC8775 Reference Manual

Rev 2.9 Oct.08

Turning on the TX in GSM mode

The sequence of AT commands that follows turns the trans‐
mitter on and adjusts the offsets.
Table 5-4: Command sequence for setting GSM
offsets
Command
1.
AT!ENTERCND=
"password"
2.
AT!DAFTMACT
3.
AT!DASBAND=12
4.
AT!DASCHAN=661
5.
AT!DAGSTXFRAME
=0,1,3000,0
6.
AT!DASTXON
7.
AT!DASPDM=0,2240
Turning on the RX and reading RSSI in
WCDMA mode
The following sequence of commands turns on the receiver
and reads the RSSI.
Table 5-5: Command sequence for reading the RSSI
in WCDMA mode
Command
1.
AT!ENTERCND=
"password"
2.
AT!DAFTMACT
3.
AT!DASBAND=16
Test Commands
Function
Enters the password, providing
access to the necessary commands
Puts the modem into factory test
mode
Sets the frequency band to GSM
1900
Sets the channel to 661
Configures TX slot 0
Enables slot on
Sets slot power level to 3000
(Power level * 100, where Power
level is 30 dB)
Sets Modulation Code Scheme to
MCS1.
Turns the TX PA on
Offsets the tracking LO by 2240.
(You may need to run this command
repeatedly, adjusting the frequency
offset until you obtain the desired
frequency.)
Function
Enters the password, providing
access to the necessary commands
Puts the modem into factory test
mode
Sets the frequency band to
WCDMA 1900
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