Vctcxo Tuning - Nokia RH-57 Series Troubleshooting Manual

Nokia Customer Care
Figure 21: RF Main Mode dialog box for synthesizer troubleshooting
4. Click Set.
Note: Be sure that the "RF Main Mode set successfully..." message appears in the status bar.
5. Read register templates Jedi(0) bits 10 and 11 for the UHF and Tx VHF lock
condition on the RF Register R/W dialog box.
Figure 22: RF Register R/W dialog box for synthesizer setup
6. Read register templates Yoda(0) bit 11 for the RX VHF lock condition.

VCTCXO Tuning

The VCTCXO can be manually tuned to verify failed tuned phones, or to verify if a phone
cannot make a call. This can be done with the phone in Local Mode and generating a CW
signal. The frequency accuracy of the VCTCXO can be measured using an HP8960 callbox
Issue 1 07/2004
©2004 Nokia Corporation
Troubleshooting - RF
Company Confidential
2112 (RH-57)
Page 33