HC5-10
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User Manual
Rev. 1.0 - 26/03/04
5.2.4
Protection Circuits
The HC5-10 apparatus disposes of protection circuits that arrest temporarily and/or
definitely the functioning of the whole transmitter system.
1)
Protection from excessive output forward power "Fwd PWR".
It intervenes at 12.5KW, and it effect until to 8 attempts in the short period; exhausted
the restoration attempts blocks the apparatus definitely, signalling the status with a
"Fault" red LED placed on the frontal panel. If the total of the 8 attempts doesn't
happen within the period of an hour, the counter of the interventions is reset giving
back again to others 8 possibilities of restoration. During the temporary arrest on the
HC5-10 frontal panel appears the yellow LED indication with "Wait" label.
2) Protection from excessive output reflected power "Ref PWR".
It intervenes at 1800W, and it effects until to 8 attempts in the short period, exhausted
the restoration attempts blocks the apparatus definitely signalling the status with a
"Fault" red LED placed on the frontal panel. If the total of the 8 attempts doesn't
happen within the period of an hour, the counter of the interventions is reset giving
back again to others 8 possibility of restoration. During the temporary arrest on the
HC5-10 frontal panel appears the yellow LED indication with "Wait" label.
3) Protection from excessive excitement input power "Inp PWR".
It intervenes at 250W, and it effects until to 8 attempts in the short period, exhausted
the restoration attempts blocks the apparatus definitely signalling the status with a
"Fault" red LED placed on the frontal panel. If the total of the 8 attempts doesn't
happen within the period of an hour, the counter of the interventions is reset giving
back again to others 8 possibility of restoration. During the temporary arrest on the
HC5-10 frontal panel appears the yellow LED indication with "Wait" label.
4) Protection from excessive Rejected power “Rej PWR”.
It intervenes at 1650W, and it effects until to 8 attempts in the short period, exhausted
the restoration attempts blocks the apparatus definitely signalling the status with a
"Fault" red LED placed on the frontal panel. If the total of the 8 attempts doesn't
happen within the period of an hour, the counter of the interventions is reset giving
back again to others 8 possibility of restoration. During the temporary arrest on the
HC5-10 frontal panel appears the yellow LED indication with "Wait" label.
5) Protection from excessive temperature on at least one of the 5 "Temp"
absorber resistances.
It intervenes at 80°C and it maintains until that the value has exceeded the threshold,
when the value descends again under the limit, the functioning returns normal.
