D4
HV overload
Indicates that the amplifier has seen an internal HV overload fault trip. The
amplifier will revert to the fault state and automatically attempt to reset three
times. For full reset details see section 5.2.1.
External interlock
Indicates that the external interlock input is asserted. This prevents the
amplifier from entering the transmit state until the input becomes unasserted.
The amplifier will revert to the fault state if the external interlock is asserted
while in the transmit state (see section 5.2.5).
D5
PF correction
Indicates that the amplifier has seen an internal power factor corrector fault
trip. The amplifier will revert to the fault state automatically. Prime power
must be removed and re-applied to reset the trip.
Reflected power
Indicates that the amplifier has seen an excessive reflected power trip. The
amplifier will revert to the fault state and automatically attempt to reset three
times. For full reset details see section 5.2.1.
Mean helix current
Indicates that the amplifier has seen an excessive mean helix current trip.
The amplifier will revert to the fault state and automatically attempt to reset
three times. For full reset details see section 5.2.1.
Peak helix current
Indicates that the amplifier has seen an excessive peak helix current trip.
The amplifier will revert to the fault state and automatically attempt to reset
three times. For full reset details see section 5.2.1.
D6
Case too hot
Indicates that the amplifier has seen an excessive internal case temperature
trip. The amplifier will revert to the fault state automatically until the fault
condition clears.
Up-converter warning Indicates that the amplifier has no 10MHz locking signal (multiplexed onto the
#1
RF input). This flag is only active if the amplifier contains an up-converter
module (type numbers with a U in the suffix). This is an advisory alarm only
and will remain set until condition clears. The amplifier will remain in the
transmit state.
Up-converter warning Indicates an ‘out of lock’ condition. This is an advisory alarm only and will
#2
remain set until the condition clears. The amplifier will remain in transmit
state.
D7
TWT collector too hot
Indicates that they amplifier has seen excessive TWT collector temperature.
The amplifier will revert to the fault state automatically until the fault condition
clears.
Stirrer fans
Indicates that the amplifier has seen an internal cooling fan fault. The
amplifier will revert to the fault state automatically. Prime power must be
removed and re-applied to reset the trip.
Cooling fans
Indicates that the amplifier has seen an internal cooling fan fault. The
amplifier will revert to the fault state automatically. Prime power must be
removed and re-applied to reset the trip.
D8
Not currently used
D9
TWT cathode volts
Indicates that the TWT cathode voltage has varied outside the set window
limits (unstable). The amplifier will revert to the fault state automatically until
the fault condition clears. For full reset details, see section 5.2.1.
TWT collector volts
Indicates that the TWT collector voltage has varied outside the set window
limits (unstable). The amplifier will revert to the fault state automatically until
the fault condition clears. For full reset details, see section 5.2.1.
TWT heater volts
Indicates that the amplifier has seen an internal heater fault. The amplifier
will revert to the fault state automatically. Prime power must be removed and
re-applied to reset the trip.
© e2v technologies (uk) limited 2010
DAS768892AA
Version
1,
page
24
