Technical data

2-16 Service Guide 85309-90082
Operating Information LO/IF Distribution Unit
Performing the Operator’s Check 85309B
Checking the 85309B Test 1 LO/IF (J3) Channel
16. Connect a test cable between the PNA Port 1 and the 85309B rear panel port LO Input (J1).
17. Connect a test cable between the PNA Port 2 and the 85309B rear panel port Test 1 LO/IF (J3).
18. For a standard model or Option 00x models only: Compare the output power traces from the Test 1 LO/IF
(J3) port with the limits across the entire frequency range in Table 2-3 on page 2-17.
19. For Option 40x models only:
a. Place the 85309B front panel Band Selection switch in the HIGH position, and compare the output
power traces with the limits across the entire frequency range in Table 2-4 on page 2-18.
b. Place the 85309B front panel Band Selection switch in the LOW position, and compare the output
power traces with the limits across the entire frequency range in Table 2-5 on page 2-18.
20. Set the PNA Port 1 source power to 6 dBm.
21. Repeat Step 18 or Step 19, as appropriate.
Checking the 85309B Reference LO Out (J2) Channel
22. Connect a test cable between the PNA Port 1 and the 85309B rear panel port LO Input (J1).
23. Connect a test cable between the PNA Port 2 and the 85309B rear panel port Reference LO OUT (J2).
24. Set the PNA Port 1 source power to 0 dBm.
25. For a standard model or Option 00x models only: Compare the output power traces from the Reference
LO OUT (J2) port with the limits across the entire frequency range in Table 2-3 on page 2-17.
26. For Option 40x models only:
a. Place the 85309B front panel Band Selection switch in the HIGH position, and compare the output
power traces with the limits across the entire frequency range in Table 2-4 on page 2-18.
b. Place the 85309B front panel Band Selection switch in the LOW position, and compare the output
power traces with the limits across the entire frequency range in Table 2-5 on page 2-18.
27. Set the PNA Port 1 source power to 6 dBm.
28. Repeat Step 25 or Step 26, as appropriate.
For Option 00x and 40x Models Only: Checking the 85309B Test 2 LO/IF (J11) Channel
29. Connect a test cable between the PNA Port 1 and the 85309B rear panel port LO Input (J1).
30. Connect a test cable between the PNA Port 2 and the 85309B rear panel port Test 2 LO/IF (J11).
31. Set the PNA Port 1 source power to 0 dBm.
32. For a standard model or Option 00x models only: Compare the output power traces from the Test 2 LO/IF
(J11) port with the limits across the entire frequency range in Table 2-3 on page 2-17.
33. For Option 40x models only:
a. Place the 85309B front panel Band Selection switch in the HIGH position, and compare the output
power traces with the limits across the entire frequency range in Table 2-4 on page 2-18.
b. Place the 85309B front panel Band Selection switch in the LOW position, and compare the output