Specifications

WM_PRJ_Q2501_PTS_002 - 001
March 2004
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8.2 RF output accessibility for diagnostic
During the integration phase of the module, it can be helpful to connect the
Q2501 module to a GSM/GPRS simulator in order to check some critical RF Tx
parameters.
Even though the module has been certified, some parameters can be degraded
because some basic precautions have not been taken (poor power supply for
example).
Most of the time, this will not affect the functionality of the product, but the
product will not comply with the GSM specifications.
The following parameters can be checked with a GSM/GPRS simulator:
 phase & frequency error,
 output power & GSM burst time template,
 output spectrum (modulation & switching).
Typical GSM/GPRS simulators available are:
 CMU200 from Rhode & Schwarz,
 8960 from Agilent.
Figure 42: Module connection for RF measurements
Because of the high price associated with the GSM/GPRS simulator and the
necessary required GSM know-how, the customer can check its application in
WAVECOM laboratory.
Please feel free to contact WAVECOM support team.