Anritsu 682XXB - Manual (Page 197)

682XXB/683XXB MM 5-31
Step 6. Using the spectrum analyzer, verify the presence of the
+3 dBm
±5 dB, 10 MHz signal at the end of the cable.
G If present, replace the A4 PCB.
G If not present, go to step 7.
Step 7. Disconnect cable W105 at A3J4.
Step 8. Using the spectrum analyzer, verify the presence of the
+3 dBm
±5 dB, 10 MHz signal at A3J4.
G If present, replace the cable W105.
G If not present, replace the A3 PCB.
Step 9. Reconnect cable W121 to A5J5 and disconnect cable W107 at
A5J1.
Step 10. Set up the 682XXB/683XXB to generate the CW frequencies
listed in Table 5-10.
Step 11. Using a spectrum analyzer, measure the frequency and am-
plitude of the signal at A5J1 for each of the CW frequencies
generated. In each case, the signal amplitude should be
+3 dBm
±3 dB with sidebands at <–65 dBc.
G If the signals are correct in both frequency and amplitude,
go to step 12.
G If the signals are incorrect, replace the A5 PCB.
Step 12. Reconnect cable W107 to A5J1 and run self-test again.
G If error 111 is not displayed, the problem is cleared.
G If error 111 is still displayed, contact your local ANRITSU
service center for assistance.
Table 5-9. Error Message 111 (2 of 2)
TROUBLESHOOTING
TROUBLESHOOTING TABLES
682XXB/683XXB
CW Frequency
Measured Frequency
at A5J1
10.102 GHz 22 MHz
10.110 GHz 30 MHz
10.120 GHz 40 MHz
Table 5-10. Fine Loop Frequencies