Viavi CellAdvisor JD700B Series, Руководство пользователя

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Chapter 15 Using Cable and Antenna Analyzer
524
JD700B Series User’s Guide
1-port calibration
Measurement modes that need the 1-port calibration are Reflection, DTF, Cable Loss, 1 Port Phase, and
Smith Chart.
It is recommended that you perform an O-S-L calibration right at the Reflection/RF Out port of the instrument
without using an extension cable in order to minimize a measurement error. If using an extension cable is
inevitable, you need to use a phase stable cable and perform the O-S-L calibration at the open end of the
extension cable.
NOTE
If the O-S-L calibration is done at the end of the port extension cable for DTF
measurement, the length of the port extension cable is compensated automatically and is
not included in the distance to the point of discontinuity.
Bending or moving the extension cable while making a measurement may cause errors in
the measurement.
O-S-L calibration using mechanical Y-Cal kit
Figure 314 illustrates the connection when a port extension cable is used for calibration.
Figure 314 1-port calibration connection with mechanical Y-Cal kit
Procedure
1
Press the MEASURE SETUP hot key.
2
Press the Calibrate soft key.
The on-screen instruction for the calibration appears.
3
Connect the OPEN connector of the CAL Kit directly to the Reflection/RF Out port or at the end
of the connected extension cable.
4
Press the Continue soft key to start calibration.
The calibration progress bar appears.
5
Connect the SHORT connector of the CAL Kit directly to the Reflection/RF Out port or at the
end of the connected extension cable.
6
Press the Continue soft key to continue calibration.
The calibration progress bar appears.
7
Connect the LOAD connector of the CAL Kit directly to the Reflection/RF Out port or at the end
of the connected extension cable.
8
Press the Continue soft key to continue calibration.
The calibration progress bar appears.
After completion, the calibration status on the screen changes to
ON .