Viavi CAA06M, User Manual

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CAA06M User's Guide
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the distance unit in the DTF settings accordingly to Meter or Foot.
6 For users with the Bias Tee installed. To use the Bias Tee, Select On for the Bias Voltage and input a
value between 12 and 30 with 1 V step, as you desire. Tap Apply to save the changes.
NOTE:
If you have set this Bias Voltage to On , the instrument will supply a DC bias of set level (12
– 30 V) from the
SMA port to an external bias-tee device.
Cable Definition
You can select a cable from the list of cable names stored in the instrument or define a cable as custom
cable by setting the propagation velocity and cable loss parameters.
1 Tap the Menu ( ) key on the side bar and tap Cable Definition .
2 Tap Cable Name and The Cable List window appears, displaying standard cables stored in the
instrument and custom cables created in the JDViewer.
3 Select a cable to choose from the list and then tap Apply on the Cable List window. The instrument
automatically changes the Propagation Velocity and Cable Loss values correspondent to the
selected cable's propagation velocity and cable loss. Default setting is HFC-12D (1/2") .
4 If you want to define a new cable, select the Propagation Velocity field, and then enter the
propagation velocity of the cable using the on-screen keyboard and tap Apply .
NOTE:
You can set this relative propagation delay of the cable to be defined. It affects the
calculation of distance in DTF measurements.
5 After entering Propagation velocity, tap Cable Loss and enter the cable loss value of the cable using
the on-screen keyboard and tap Apply .
The text “Custom Cable” appears in the
Cable Name field.
NOTE:
You can set this cable loss of the cable, for which you like to define. It affects the peak level
of discontinuity in DTF measurements. If you select a cable from the list, the cable loss
value is displayed as "
@ 1 GHz ". If you define a cable manually, its value is displayed as " @
Custom Frequency ".
Performing calibration