Specifications

Product Technical Specification & Customer Design Guidelines
78 Proprietary and Confidential - Contents subject to change 2400089
d. AT!DASCHAN=<channel> (Set modem channel)
· See Ta ble C-1 for appropriate <channel> values
e. (GSM mode only)
AT!DAGSTXFRAME=0, 1, 3000, 0 (Set Tx frame structure.)
f. AT!DASTXON (Turns on the transmit path.)
g. (WCDMA mode only)
AT!DAWSTXCW=0 (Use a modulated carrier.)
AT!DASPDM=2, 75 (Set the power level. Repeat command with
different offsets until desired Tx power is obtained.)

AT!DAWSPARANGE=3 (Set to high PA gain state.)
h. Offset the tracking (If necessary, repeat with different offsets until the
desired frequency is obtained.)

(WCDMA mode) AT!DASPDM=4,35100
(GSM mode) AT!DASPDM=0,2240
i. Take the measurement.
j. AT!DASTXOFF (Turn off the transmitter.)
3. Test limits — Run ten or more good DUTs through this test procedure to
obtain a nominal output power value.
· Apply a tolerance of 5 to 6 dB to each measurement (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 module has a nominal output power of +23 dBm  1 dB in WCDMA mode.
However, the value measured by the power meter is significantly influenced (beyond the
stated
 1 dB output power 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.