Diagnostics
RFI-148 250W VHF Paging Transmitter User Manual
Page 22 of 43
5.1.2 Minimum and Maximum Sensor History
When a sensor exceeds a previous minimum or maximum value for that sensor, the new minimum or
maximum value is saved to non-volatile storage. The minimum and maximum sensor values also use the
conditional cut-off checking. For example, minimum and maximum transmit power values are only recorded
during transmission.
5.2 Faults
Undesirable operating conditions are reported using the faults feature of the paging transmitter. In most
circumstances the paging transmitter should not have any active faults. Active faults indicate incorrect setup,
a hardware issue or misconfiguration of the paging transmitter.
Faults can be in one of four states:
Inactive:
The fault is inactive.
Fleeting:
The source of the fault is currently active; however it has not been active longer than the
minimum fault duration setting.
Active:
The source of the fault is currently active.
Latched:
o
For Faults: The fault was previously active but the source of the fault is no longer present.
o
For Fault Actions: The fault action has been carried out.
A list of possible faults can be found in Appendix E.
5.2.1 Fault Actions
Each fault can be configured to perform an action when the fault transitions from the inactive (or fleeting) to
the active or latched state. The actions that are taken due to a fault are called
Fault Actions.
There are five
fault actions:
Reference switchover:
The paging transmitter switches to the internal reference.
Disable transmission:
Any current transmission is interrupted, the transmitter is keyed down and
future transmissions are disabled.
Scale transmit power:
Transmit power is reduced.
Enable PA current fold-back:
The PA current fold-back is engaged.
Enable reverse power fold-back:
The reverse power fold-back is engaged.
