GSM/GPRS/EDGE Signal Analyzer 2-12 Measurements Menu
3GPP MG PN: 10580-00234 Rev. T 2-13
2-12 Measurements Menu
Key Sequence: Measurements
Spectrum: Opens the “Spectrum Menu” on page 2-14.
Power versus Time (Frame): Displays approximately eight and a half slots
of the GSM/EDGE signal frame starting from the first active slot found. The
screen also displays Channel Power, Occupied Bandwidth, Frequency Error
in PPM and Hz, Modulation Type, Burst Power, Avg Burst Power, and BSIC.
Power versus Time (Slot): Displays the first active slot of the GSM/EDGE
signal capture. The mask is as specified in 3GPP TS 05.05. The screen also
displays Channel Power, Occupied Bandwidth, Frequency Error in PPM and
Hz, Modulation Type, Burst Power, Avg Burst Power, and BSIC.
Demodulator: Opens the “Demodulator Menu” on page 2-15. Displays the
IQ vector of the GSM/EDGE signal. The screen also displays Phase Err
RMS, Phase Err Pk, EVM (rms), EVM (pk), Origin Offset (dBc), C/I (dB),
Modulation Type and Magnitude Error (rms).
Note: GSM uses GMSK modulation and EDGE uses 8PSK modulation. EVM
(rms), EVM(pk), Orgin Offset, C/I are not measured for GSM signals (shows
N/A on the display).
Pass/Fail Mode: Opens the “Pass/Fail Mode Menu” on page 2-16. Displays
the Pass/Fail measurements in a table format with clear pass or fail
indicators that include min/max thresholds and actual measured results.
GSM/EDGE Summary: Displays the measurement results in a table format.
Save Measurement: Opens a dialog window to name and save the current
measurement. Refer to the User Guide that came with the instrument for the
saving functions.
Note: If a measurement has been previously saved, the Save Measurement
dialog box will open with the previously saved name displayed. To save the
new measurement with a similar name (for example, Trace-1, Trace-2, and
so forth) simply press the Right directional arrow and add the changes. To
create a completely new name, use the keypad, the rotary knob or press the
submenu key for each letter. GSM measurements are saved with a .gsm file
extension, and GSM/EDGE measurements are saved with an .edg
extension.
Figure 2-13. GSM/GPRS/EDGE Measurements Menu
Measurements
Spectrum
Power vs.
Time
(Frame)
Power vs.
Time
(Slot)
Demodulator
Pass/Fail
Mode
GSM/EDGE
Summary
Save
Measurement
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