JDS Uniphase CellAdvisor JD720C Series, Руководство пользователя

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Chapter 4 Performing Calibration
40 CellAdvisor JD720C User's Manual
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 Thru calibration connection diagram
O-S-L-Thru calibration using mechanical Y-Cal kit
Procedure
1
Connect an extension cable to the RF Out / Reflection port of the instrument.
2
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.
3
Press the CAL hard key.
The on-screen instruction appears to guide you through the O-S-L-Thru calibration.
4
Tap the O-S-L-Thru button in the lower-left corner of the screen.
The calibration progress bar appears.
5
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.
6
Tap the Continue button in the lower-left corner of the screen.
The calibration progress bar appears.
7
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.
8
Tap the Continue button in the lower-left corner of the screen.
The calibration progress bar appears.
9
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 .
10
Tap the Continue button in the lower-left corner of the screen.
The calibration progress bar appears.
11
Check the screen to see if the calibration status is now changed to CAL ON .