406 Chapter 2
Performance Verification Tests
58. GSM Phase and Frequency Error (Options BAH and B7E)
58. GSM Phase and Frequency Error (Options
BAH and B7E)
This test verifies the ability of a UUT (unit under test) to measure
phase and frequency error in the GSM personality (Option BAH). ESA
Series Spectrum Analyzers that use both Options BAH and B7E are
used to measure and verify the performance of the phase and frequency
error in the GSM personality.
Phase and frequency error in the GSM personality is measured by
generating a GSM forward link carrier with a single active time slot.
Note that Option B7D is a required Option for B7E. This test is
repeated at different frequencies and amplitude signal levels.
There are no related adjustment procedures for this performance test.
Equipment Required
Sythesized signal generator with GSM capabilities
Cable, BNC, 120-cm (48-in.)
Cable, Type N, 183-cm (73-in.)
Figure 2-76 GSM Phase and Frequency Test Setup
Procedure
Set the signal generator to generate a single forward link GSM
modulated carrier with a single time slot by performing the following
steps:
NOTE The signal generator provides the 10 MHz reference for the analyzer.