R.V.R. Electronica DTUTT1K2HP1D User Manual - Dtutt1K2Hp1D
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User Manual
Rev. 1.0 - 18/06/12
DTUTT1K2HP1D
ELETTRONICA
6.4.2 From OFF to ON with exciters in manual
When switching from OFF to ON with the exciters in manual mode, the apparatus
does not perform any check and the exciter that is currently set to on air is the
one that is aired.
If the mains signal is not OK, the exciters turn off automatically.
If the maximum drive power is exceeded during operations, the
DTUTT1K2HP1D is
set to fault status and power supply is cut to the exciters.A message in the alarms
menu signals this fault.
When the apparatus is set to EXT INT or AUX INT, the mute RF signals of the
excitersarenotactivatedandmaybemodifiedbytheoperator.
6.4.3 Automatic changeover
When the
DTUTT1K2HP1D is in the exciter automatic changeover mode, the power
emitted by the on air exciter is checked constantly. If at any time the on air exciter
is no longer good (i.e. power drops to below the preset level), the apparatus is kept
operational whereas the exciter connected to the internal Dummy Load turns on.
If the latter one is good (i.e. it is capable of supplying the required power), then
the two exciters are changed over. Instead if the alternative exciter is not good, no
changeover takes place, the control unit commands the mute RF of the exciter to
Dummy Load, it waits 120 s. and repeats the attempt. This procedure is repeated
indefinitelyuntiloneofthetwoexcitersisconsideredtobegood.
During the whole length of time during which there is no good exciter,
the
DTUTT1K2HP1D keeps the WAIT LED on for signalling this status.
EachexciterisfittedwithitsownmuteRF.Onbeingcommanded,thepiloting
signal must return to zero within 3 seconds at the most. If this does not occur, the
fault is recorded by an error message that is entered in the alarms menu.
If the mains signal is not OK, the exciters turn off automatically. If the piloting power
exceeds the limit during operations, the
DTUTT1K2HP1D is set to the FAULT
status and the power supply of the exciters is turned off. A message in the alarms
menu signals the fault. Keep in mind that the operator’s intervention is required
to exit from the FAULT status.
If the MAINS signal coming from the bus is not OK, the exciters are all turned off.
As soon as the MAINS signal is regular again, the evaluation cycle of the exciters
begins.