Viavi CAA06M, User Manual

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CAA06M User's Guide
37
is desirable to set the frequency to a value that covers a normal range of the measurement with enough
margins.
1 Tap the Menu ( ) key on the side bar and tap Frequency .
2 Input the values of Start Frequency, Stop Frequency, Center Frequency, Span Frequency using
the on-screen keyboard and tap Apply .
3 To select a band tap the Band List then it displays a list of standard bands stored in the instrument
and custom bands created in the JDViewer. Tap your choice from the list and tap the Apply button on
the Band List box. The instrument automatically updates the values of the Start Frequency and Stop
Frequency according to the selected band.
NOTE:
Frequency changes after calibration affect the calibration status. If changed within the
registered bands, 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.
Distance
You can also manually set a distance to be measured by entering start and stop distances. The maximum
measurable distance is dependent on the frequency you set. You can set any values within the maximum
measurable distance, but optimum resolution is achieved when you set the distance same as the
maximum measurable distance, which is displayed in the measurement setting information bar at the
bottom of the measurement screen.
1 Tap the Menu ( ) key on the side bar and tap Distance .
2 Input the values of Start Distance, Stop Distance using the on-screen keyboard and tap Apply .
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.
1 Tap the Menu ( ) key on the side bar and tap Amplitude .
2 Input the values of Top and Bottom amplitudes using the on-screen keyboard and tap Apply . The
entered values become the maximum and minimum values for the Y-scale.
3
To restore the instrument’s default range for the Y-scale, tap
Full Scale . The amplitude range for the
DTF mode is 1 to 65 in VSWR and -60 to 0 dB in Return Loss.