User's Manual

Troubleshooting
RFI-148 & RFI-900 High Output Power Paging Transmitters User Manual Page 129 of 134
Figure 20: Cruise Control Faults Overview
In the case of Figure 20, the external reference fail and reference switchover faults are active. See the headings
below to diagnose some common active faults.
G.3 External Reference Fail
The external reference fail fault goes active when the transmitter is configured to use the external reference,
but it cannot be locked to.
If an external reference is not in use, change the reference mode to internal and then run the clear all faults
routine to clear the fault LED.
If an external reference is required:
• Ensure the external reference is plugged in.
• Ensure the external reference is within specification (see Table 16).
• Ensure the external reference frequency is configured correctly.