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138 Chapter 10
GSM/EDGE Measurement Application
Measurements
Description Specifications Supplemental Information
Phase and Frequency Error GMSK modulation (GSM)
Specifications based on 3GPP essential
conformance requirements, and 200
bursts
Carrier power range at RF Input +27 to −45 dBm (nominal)
Phase error
a
, rms
a. Phase error and frequency error specifications apply when the Burst Sync is set to Training Sequence.
Floor 0.6°
Accuracy
Phase error range 1 ° to 6 °
±0.3°
Frequency error
a
Initial frequency error range ±80 kHz (nominal)
Accuracy
±5 Hz
b
+ tfa
c
b. This term includes an error due to the software algorithm. The accuracy specification applies when
RMS phase error is less than 1 °.
c. tfa = transmitter frequency × frequency reference accuracy
I/Q Origin Offset
DUT Maximum Offset −15 dBc (nominal)
Analyzer Noise Floor −50 dBc (nominal)
Trigger to T0 time offset
Relative accuracy
d
d. The accuracy specification applies when the Burst Sync is set to Training Sequence, and Trigger is set
to External Trigger.
±5.0 ns (nominal)