Testing Rf Receive Path-Mc57Xx - Sierra Wireless MC5725 Hardware Integration Manual

CDMA and GSM / UMTS Mini Card Hardware Integration Guide
88
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
(WCDMA mode only)
h.
AT!DASPDM=2, 455
from 0 to 511)
(WCDMA mode only)
i.
AT!DAWSPARANGE=3
Take the measurement.
j.
AT!DASTXOFF
k.
3. Test limits:
Run ten or more good DUTs through this test proce‐
dure to obtain a nominal output power value.
· Apply a tolerance of
(assuming a good setup design).
· Monitor these limits during mass‐production ramp‐up
to determine if further adjustments are needed.
· For GSM mode, the transmit signal is bursted, so the
transmit power will appear averaged on the power
meter reading.
Note: The MC87xx has a nominal output power of +23 dBm
WCDMA mode. However, the value measured by the power meter is
significantly influenced (beyond the stated
tolerance) by the test setup (host RF cabling loss, antenna efficiency
and pattern, test antenna efficiency and pattern, and choice of shield
box).
Note: When doing the same test over the air in an RF chamber,
values are likely to be significantly lower.
Testing RF Receive path—MC57xx
Note: This procedure segment is performed in Step
Suggested test plan procedure (page
To test the DUT's receive path:
Proprietary and Confidential
(Set the power level, tunable
(Set to high PA gain state)
(Turns off the transmitter)
±
5 to 6 dB to each measurement
±
1 dB output power
14 of the
84).
±
1 dB in
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