![JDS Uniphase CellAdvisor JD780A Series User Manual Download Page 494](http://html1.mh-extra.com/html/jds-uniphase/celladvisor-jd780a-series/celladvisor-jd780a-series_user-manual_3602616494.webp)
JD780A Series Analyzers
494
Using Cable and Antenna Analyzer
Adjusting scale
You can adjust the Y-axis scale to optimize the display of measurement trace(s). Adjusting scale does
not affect the calibration state.
Procedure
1.
Press the
AMP/SCALE
hard key.
2.
Do one of the following choices:
–
Press the
Auto Scale
to optimize the display of the measured trace by letting the
instrument set the minimum and maximum values for the Y-axis automatically.
Each time this key is pressed, the top and bottom scales are set to the minimum and
maximum values with margin on the Y-axis of the chart.
–
Press the
Full Scale
to restore the insturment
’s default amplitude range for the Y-scale
automatically.
–
To set the minimum and maximum values for the Y-axis manually, complete the following
steps:
a.
Press the
Maximum (Top)
soft key.
b.
Enter a value by using the numeric keys.
c.
Press the
Enter
soft key.
d.
Press the
Minimum (Top)
soft key.
e.
Enter a value by using the numeric keys.
f.
Press the
Enter
soft key.
NOTE
This setting is not used in the Smith Chart measurement mode.
Setting sweep mode
The default setting is
Continue
to sweep continuously for most on-going measurements. If you want to
hold the measurement or get a single sweep, you can change the sweep mode.
Procedure
To select the single sweep mode:
1.
Press the
SWEEP
hot key.
2.
Toggle the
Sweep Mode
soft key and select
Single
. You can also use the
HOLD
hot key.
The letter
HOLD
in red appears and the sweeping is paused.
3.
Optional
. Press the
Sweep Once
soft key to get a new measurement.
To return to the continuous sweep mode:
1.
Toggle the
Sweep Mode
soft key and select
Continue
. You can also use the
HOLD
hot key.
The letter
HOLD
in red disappears and the sweeping resumes.
Performing calibration
To get reliable and accurate measurement results, you must perform a calibration on your instrument
after setting frequencies and prior to making a measurement. To perform the calibration, you need to
have the following ready:
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...
Page 525: ......
Page 590: ...JD780A Series Analyzers 590 Appendix Figure 306 Append keywords window...