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Measurement example
Figure 209 Code error measurement with TD-SCDMA signal analyzer
NOTE
You can use the LIMIT hot key to analyze your measurements with the user-definable
limit and Pass/Fail indication for the Max Inactive. See "Setting limit for modulation tests"
on page 401 for more information.
Setting limit for modulation tests
Procedure
1
Press the LIMIT hot key.
2
Press the Modulation Test Limits soft key.
3
Select the test item(s) and set the limit(s) depending on your selected measurement mode:
To set the limit for
Frequency error
Error vector magnitude rms
Peak code domain error
Highest level among inactive channels
4
Optional. You can enable alarm sound that goes off if the measurement falls outside of the limit.
Toggle the Beep soft key between On and Off to enable or disable the beep sound.
5
Optional. Go to SAVE/LOAD > Save, and then select Limit to save the limit settings.
See "Using save" on page 32 for more information.
Performing auto measurements
The Auto Measure function of the JD700B series allows a complete signal profiling covering RF
characterization and modulation quality parameters of up to 10 different carriers, particularly useful on
an overlay architecture where base stations are transmitting in different frequencies.
Select
Frequency Error
EVM RMS
PCDE
Max Inactive
JD700B Series User's Guide
Chapter 12 Using TD-SCDMA Signal Analyzer
Set
High Limit
Low Limit
High Limit
High Limit
High Limit
401
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