Technical data

6-6 User’s and Service Guide

Servicing the Test Set

Performance Testing

Testing for Insertion Loss

Step 1. Recall the adapter removal calibration from the analyzer internal disk

by pressing:

[SAVE/RECALL] > SAVE STATE

Step 2. Connect the cable attached to Port 1 of the network analyzer to the

Transmission port of the test set.

Step 3. Connect the cable from Port 2 of the network analyzer to Port 1 of the

test set.

Step 4. Select the “all_term” command using the network analyzer by pressing:

[SEQ] > TTL I/O > PARALLEL ALL OUT > [34] > [x1]

(For complete information on controlling the test set, refer to Chapter 5,

“Controlling the Test Set and Making Measurements,” on page 5-1.)

This command will ensure that no conflicts will occur when selecting

the test set ports.

NOTE Reflection and Transmission cannot be directed to the same port. If the

test set does not switch to the port you have selected, switch the other

port to either 1 or 4.

Step 5. Select "Transmission Port 1" by pressing:

[SEQ] > TTL I/O > PARALLEL ALL OUT

Enter the decimal value (D in Table 5-1 on page 5-6) to select the port,

then press:

[x1]

Step 6. Check the status LCD on the test set to verify the port has been

selected.

Step 7. On the network analyzer, press:

[MENU] > TRIGGER MENU > SINGLE

Wait until the analyzer is finished taking a sweep, then press:

[SCALE REF] > AUTO SCALE > [MARKER]

Step 8. Using the front panel knob, locate the minimum value of the data trace

for the 300 kHz to 6 GHz frequency range.

Step 9. Write the minimum value in the “Insertion Loss Test Record,” Table 6-1

on page 6-11, for the port being measured.

Step 10. Repeat steps 5 through 9 for the other frequency ranges listed in the

“Insertion Loss Test Record”

Step 11. Repeat steps 5 through 10 for the remaining Transmission test ports

(1 through 16)

Step 12. After all Transmission ports have been measured, move the cable

attached to the Transmission port to the Reflection port on the test set.

Repeat steps 5 through 11, but select the Reflection ports instead of the

Transmission ports.