Chapter 3 121
Making EDGE (with GSM) Measurements
Making the EDGE ORFS 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 Output RF SpectrumEDGE 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).
❏ Ofs Freq List - accesses a menu to choose the offset frequency list.
Select a
Standard, Short, or Custom list as shown in the table below.
List Modulation Offsets
(kHz)
Switching
Transients
Offsets
(kHz)
Standard 100, 200, 250, 400, 600,
800, 1000, 1200, 1400,
1600, 1800, 3000, 6000
400, 600,
1200, 1800
Short 200, 250, 400,
600 1200, 1800
400, 600,
1200, 1800
Custom User-defined list that specifies:
Offset Freq, RES BW, Limit Offsets,
Meas Type,
(currently settable only by remote
commands)
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