JDS Uniphase CellAdvisor JD780A Series, User Manual

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JD780A Series Analyzers
Using Cable and Antenna Analyzer
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 Calibration accessories (optional).
 Mechanical Y-Cal kit or electronic EZ-Cal kit
 Phase-stabilized test cable
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 246 illustrates the connection when a port extension cable is used for calibration.
Figure 246 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 Cable and Antenna Analyzer
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 Cable and Antenna Analyzer
Reflection/RF Out port or at the end of the connected extension cable.
6.
Press the Continue soft key to continue calibration.