Sierra Wireless MC5725 Hardware Integration Manual page 89

Note: This procedure describes
steps using the Agilent 8648C
signal generator—the Rohde &
Schwarz SML03 is shown for
reference only.
Note: This example setup uses
a 200 kHz offset from band
center for testing using a
continuous wave—you can use
any appropriate baseband
frequency offset (for example,
100 kHz, 300 kHz, etc.).
If using a modulated signal, set
the frequency to band center
with no offset.
Rev 1.9.1 Feb.09
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
1. Set up the signal generator:
a. Press the Frequency button to set the frequency to
1960.200 MHz for PCS band, Channel 600, or
881.720 MHz for Cellular band, Channel 384
Press the Amplitude button to set the amplitude to
b.
‐55.0 dBm.
Press the RF ON/OFF button to enable or disable the
c.
RF port of the signal generator.
2. Read back the power level from the main receiver:
AT!OEM=176
a.
AT!DIAG
b. (Sets the modem in Diagnostic mode)
AT!CHAN=600,1
c.
or
AT!CHAN=384,0
AT!RX=1
(Turns on the main receiver)
d.
AT!RXAGC?
e.
the main receiver)
Response examples:
· RXAGC = 0xFFFFFF33 = ‐77 dBm (when signal
generator's RF port is OFF)
· RXAGC = 0x0021 = ‐60 dBm (when signal generator's
RF port is ON) typical
Note: The dBm value displayed is calculated to reflect the power at
the input connector.
AT!RX2=1
f.
Proprietary and Confidential
(Unlocks the extended AT command set)
(PCS band, channel 600)
(Cellular band, channel 384)
(Reads back the power level, in dBm, from
(Turns on diversity receiver)
Testing
89