Testing Gps Receiver-Mc8775V - Sierra Wireless MC5725 Hardware Integration Manual

Note: This procedure describes
steps using the Agilent 8648C
signal generator—the Rohde &
Schwarz SML03 is shown for
reference only.
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.
AT!DAWGAVGAGC=9400,0,1
vii.
diversity path is used)
Test the limits as in Step 3.
c.
Testing GPS Receiver—MC8775V
Note: The GPS receiver does not need to be tested for UMTS
(MC878x) or CDMA (MC57xx) modules supporting diversity because
RF connectivity is validated by testing the diversity receiver in Step
of the Suggested test plan procedure (page
Note: This procedure segment is performed in Step
Suggested test plan procedure (page
To test the carrier‐to‐noise level for the GPS receive path:
Set up the signal generator:
1.
Set the amplitude to ‐110 dBm.
a.
Set the frequency to 1575.52 MHz. This is100 kHz
b.
above the center frequency for GPS and is needed to
accurately measure the carrier‐to‐noise (C/N) level.
Set up the DUT using the following commands:
2.
AT!UNLOCK="<customerCode>"
a.
AT!DAFTMACT
b.
AT!DAAGCTON
c.
carrier signal and receiver)
3. Test limits:
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(the '1' indicates the
84).
84).
(Puts modem into factory test mode)
(Queries power difference between
Testing
14
15 of the
93