Service manual

44 2

Performance Test

21. Press [Cal] - Adapter - 7mm 42942A to set the adapter to the 42942A.

22. Setup the 4294A as follows.

NOTE If Setup is completed in OSC level accuracy test, this operation is not required.

a. Press SETUP.

b. Connect the OPEN termination furnished with the 42942A to the 7mm connector.

c. Press PHASE COMP to measure the phase compensation data.

d. Press OPEN to measure the open compensation data.

e. Connect the SHORT termination furnished with the 42942A instead of the OPEN

termination.

f. Press SHORT to measure the short compensation data.

g. Connect the 50 Ω termination furnished with the 42942A instead of the SHORT

termination.

h. Press LOAD to measure the load compensation data.

i. Press done to activate the measured compensation data.

23. Press [Meas] - |Z|-θ to set the measurement mode.

24. Press [B] - [Format] - PHASE UNIT to set the phase display unit to radian.

25. Connect the 50 Ω Termination furnished with the 16190A to the 7mm connector.

26. Press [Trigger] - Single to make a measurement.

27. Record the 4294A reading on the calculation sheet for all setting in Table 2-10, then

calculate the test result.

Table 2-10 Measurement Accuracy Test (Accessory: 42942A

Terminal Adapter, 50 Ω) Setting

OSC Level Frequency

0.5 V 1 kHz

1 MHz

10 MHz

100 MHz

28. Connect the 10 cm airline and the OPEN termination to the 7mm connector as

follows.(refer to

Figure 2-13)

a. Fully retract the threads on the test head 7mm connector. Then insert the marked

side tip of the airline center conductor into the connector center conductor.

b. Gently cover the airline center conductor with the airline outer conductor, with the

Agilent logo side down. (To prevent damage, do not let the center conductor scrape

the edge of the outer conductor.) Mate the outer conductors. Then tie the connection

by the 136 N·cm. (A 1/2 inch open end wrench may be necessary to hold the airline

stationary)