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Chapter 5 Reflection Testing
3
Figure 16
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.
46
d
Enter a value by using the numeric keys or the rotary knob.
–
To set the center frequency and the span, complete the following steps:
a
Select the cell next to the Center Frequency.
b
Enter a value by using the numeric keys or the rotary knob.
c
Select the cell next to the Span.
d
Enter a value by using the numeric keys or the rotary knob.
–
To select a band from the band list, complete the following steps:
a
Touch the icon
The Band List window appears. It displays a list of standard bands stored in the
instrument and custom bands created in the JDViewer. See Figure 16 for example.
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.
Tap the Apply button in the lower-right corner of the setup screen to save the change(s).
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.
CellAdvisor JD720C User's Manual
next to the band list.
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