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b
Highlight your choice from the list, and then tap the Apply button on the Band List
window.
The instrument automatically updates the values in the Start Frequency and Stop
Frequency cells with the selected band's start and stop frequencies.
3
Tap the Apply button in the lower-right corner of the setup screen to save the change(s).
Figure 52
Band list window
NOTE
Frequency changes after calibration affect the calibration status. If changed within the
registered band, the status turns into CAL ON (I) and it does not require re-calibration. If
changed off the registered band, the status turns into CAL OFF and it requires
re-calibration.
Amplitude
You can set maximum and minimum values of the Y-scale manually by setting the Top and
Bottom amplitudes or restore the instrument's default full scale defined for each
measurement mode. You can also optimize the Y-scale automatically so that an entire trace
can be displayed on the measurement chart. Adjusting Y-scale does not affect calibration
status.
Procedure
1
Press the SETUP hard key and touch the Amplitude tab.
2
Do one of the following:
–
To set the Top and Bottom amplitudes manually, complete the following steps:
a
Select the cell next to the Top.
b
Enter a value by using the numeric keys or the rotary knob.
The entered value becomes the maximum value for the Y-scale.
c
Select the cell next to the Bottom.
d
Enter a value by using the numeric keys or the rotary knob.
CellAdvisor JD720C Series User's Manual
Chapter 10 2-Port Transmission Testing
89
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