Technical data

Chapter 13 185
GSM/EDGE Programming Commands
GMSK Phase and Frequency (PFER)
GSM/EDGE Programming Commands
NOTE The following QPSK EVM results, which would be returned if the measurement were run
in the GSM/EDGE measurement mode, are not returned when the measurement is run in
Sequence Analyzer mode:
• Unprocessed I/Q Trace Data
• Phase Error Trace
• Phase Error With Frequency Trace
• Log Magnitude Trace
• I/Q Corrected Trace
• Demodulated Data
• Trace Phase Sample
• Trace Bit 0 Decision Offset
• Trace Sync Start
• Trace Time Sample
12 Average I/Q Origin Offset is a floating point number (in dB) of the I and Q error
(magnitude squared) offset from the origin over the entire measurement area.
13 Maximum I/Q Origin Offset is a floating point number (in dB) of the maximum
I and Q error (magnitude squared) offset over the entire measurement area.
14 Average T0 Offset is a floating-point number of the time interval (in seconds)
between the slot boundary and T0. T0 is the transition time from symbol 13 to
symbol 14 of the midamble training Sequence for each time slot. The ‘RF Sync
Delay’ under ‘Mode Setup’ is not considered in this measurement.
15 Maximum T0 Offset is a floating-point number of the time interval (in seconds)
between the trigger point to T0. T0 means the transition time from symbol 13 to
symbol 14 of the midamble training Sequence for each time slot. Takes the T0
Offset from each burst and identifies the highest. The ‘RF Sync Delay’ under
‘Mode Setup’ is not considered in this measurement.
16 Detected Training Sequence Code (TSC) is a floating point number of detected
TSC in the last measurement burst. The returned value is
0~7 for Burst Type: Normal
10 for Burst Type: Sync,
20 for Burst Type: Access (if TSC detected).
If TSC (Normal), Extended Training Sequence Bits (Sync) or Synch Sequence
Bits (Access) are not detected, the returned value is –999.0.
If Amptd or NONE (Power vs Time only) is specified in Sync Type, the returned
value is –999.0.
In multi slot condition, the returned value is the detected TSC of the specified
slot (Time Slot ON) or the first evaluated slot (Time Slot OFF).