78 Chapter3
Making EDGE (with GSM) Measurements
Making the Output RF Spectrum Measurement
NOTE Parameters that are under the Advanced key seldom need to be
changed. Any changes from the default values may result in invalid
measurement data.
Make sure the EDGE ORFS measurement is selected under the
Measure menu. Press the Meas Setup key to access a menu which allows
you to modify the averaging and trigger source for this measurement
(as described in the “Measurement Setup” section at the beginning of
this chapter). In addition, the following output RF spectrum
measurement parameters can be modified:
•
Measure - accesses a menu to choose the measurement mode.
Multi-Offset - automatically makes measurements at all offset
frequencies in the selected list (
Standard, Short, or Custom).
(See table below.) Press the
Ofs Freq List key to select a list of
offsets to measure.
Single Offset (Examine) - makes a measurement at a single offset
frequency as set by the
Offset Freq softkey.
•
Meas Type - accesses a menu to choose the measurement type.
Mod & Switch - will perform both Modulation and Switching
measurements.
Modulation - measures the spectrum due to the 0.3 GMSK
modulation and noise.
Switching - measures the spectrum due to switching transients
(burst ramping).
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