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Chapter 4 Performing Calibration
Performing 2-port calibration
Measurement modes that need the 2-port calibration are 2 Port Transmission and 2 Port
Phase with JD725C and JD726C. You must perform the mechanical or electronic O-S-L
calibration and then the Thru calibration after setting the frequency and the output power.
Figure 13 illustrates a connection setup for Thru calibration.
Figure 13
O-S-L-Thru calibration using mechanical Y-Cal kit
Procedure
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Thru calibration connection diagram
Connect an extension cable to the RF Out / Reflection port of the instrument.
Connect the OPEN standard of the calibration kit to the end of the extension cable connected to
the instrument's the RF Out / Reflection port.
Press the CAL hard key.
The on-screen instruction appears to guide you through the O-S-L-Thru calibration.
Tap the O-S-L-Thru button in the lower-left corner of the screen.
The calibration progress bar appears.
Disconnect the calibration kit and then connect the SHORT standard of the calibration kit to the
end of the extension cable connected to the instrument's the RF Out / Reflection port.
Tap the Continue button in the lower-left corner of the screen.
The calibration progress bar appears.
Disconnect the calibration kit and then connect the LOAD (50 Ω) standard of the calibration kit to
the end of the extension cable connected to the instrument's the RF Out / Reflection port.
Tap the Continue button in the lower-left corner of the screen.
The calibration progress bar appears.
Disconnect the calibration kit and then connect the end of the extension cable connected to the
instrument's the RF Out / Reflection port to the instrument's RF In port as illustrated in
Figure 13.
Tap the Continue button in the lower-left corner of the screen.
The calibration progress bar appears.
Check the screen to see if the calibration status is now changed to
CellAdvisor JD720C User's Manual
CAL
ON.
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