CPI T04CO Installation & Operation Manual page 54

The configuration definitions are given below.
FAULT
LOW RF
4-4
Fault status indicates that the MPA Hub Mount is in the Fault
state. The MPA Hub Mount features Auto Fault Recycle
capabilities and is capable under some circumstances of
cycling back to a normal operating state.
Note: During normal operation, the relay is energized. (There
is continuity between the "NO" and "COM" contacts.) The
relay will de-energize when a fault occurs.
The Low RF status indicates that the MPA Hub Mount's RF
output is below the Low RF Alarm level or that the MPA Hub
Mount is in the Fault state. A waveguide switch can use this
information to trigger automated switching action. The Low
RF status has two modes, Flexible and Rigid.
In Rigid mode the Low RF status will indicate that the MPA
Hub Mount's RF output is below the Low RF Alarm level any
time this condition occurs, except during an RF Switch port RF
Inhibit command. The Rigid mode can be thought of as the
strictest operation of the Low RF status.
In Flexible mode the Low RF status will indicate that the MPA
Hub Mount's RF output is below the Low RF Alarm level any
time this condition occurs during the Transmit state, except
during an RF Inhibit*. (The Low RF status will not assert
during a Fault state.) The Flexible mode allows the user to
operate a switch controller in Automated Switching mode
without triggering waveguide switch action while operating
the MPA Hub Mount in any normal operating state or issuing
RF Inhibit commands.
*If RF Inhibit is activated while the Low RF Relay indicates a
low RF condition, the Low RF Relay will not change state. (It
will continue to indicate Low RF.) Once the RF Inhibit
disappears, the Low RF Relay will report existing conditions.
Note: During normal operation, the relay is energized. (There
is continuity between the "NO" and "COM" contacts.) The
relay will de-energize when a fault occurs.
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Installation and Operation Manual