JD780A Series Analyzers
180
Using WCDMA/HSPA+ Signal Analyzer
Setting display
If the CDP table spans over to the next page(s), you can change pages up and down to view .your
measurement results.
Procedure
1.
Press the
TRACE/DISPLAY
hard key.
2.
Select
Page Up
or
Page Down
as needed.
Setting limit for modulation tests
Procedure
1.
Press the
LIMIT
hot key.
2.
Press the
Modulation Test Limits
soft key to set the limits.
3.
Select the test item(s) and set the limit(s) depending on your selected measurement mode:
To set the limit for
Select
Set
Frequency error
Frequency Error
High Limit
Low Limit
Error vector magnitude
EVM
High Limit
Peak code domain error
PCDE
High Limit
Carrier feed through
Carrier Feed Through
High Limit
Correlated power in coded channel
CPICH
High Limit [Abs|Rel]
Low Limit [Abs|Rel]
Highest level among inactive channels
Max Inactive
High Limit
Relative code domain error
RCDE
High Limit (QPSK)
High Limit (16 QAM)
High Limit (64 QAM)
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 31 for more information.
NOTE
The Carrier Feed Through is a result of the RF carrier signal feeding through the I/Q
modulator and riding on the output circuitry without being modulated.
Performing auto measurements
The Auto Measure function of the JD780A 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.
The Auto Measure can be easily executed either by selecting a menu in the instrument or by running a
programmed scenario in the PC-based application so that the instrument automatically configure and
perform tests on every aspect of all the carriers.
Summary of Contents for CellAdvisor JD780A Series
Page 52: ...JD780A Series Analyzers 52 Getting Started Figure 6 Example of Web remote on Chrome...
Page 254: ...JD780A Series Analyzers 254 Using LTE FDD Signal Analyzer 3 RS SINR 4 S SS RSSI 5 P SS Power...
Page 323: ...JD780A Series Analyzers Using LTE TDD Signal Analyzer 323 3 RS SINR 4 S SS RSSI 5 P SS Power...
Page 390: ...JD780A Series Analyzers 390 Using EV DO Signal Analyzer 3 Pilot 4 MAC 64 5 MAC 128...
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Page 590: ...JD780A Series Analyzers 590 Appendix Figure 306 Append keywords window...
