DIMAT OPU-1 - Page 56

OPU-1
UNIVERSAL POWER-LINE CARRIER SYSTEM TYPE OPU-1
GENERAL DESCRIPTION - Rev 7 (May 2019)
56/67
➢ Teleprotection system of up to four
independent commands or in any
combination for dual tone in a bandwidth
of 1 kHz, 2 kHz or 4 kHz.
➢ 2 or 4-command teleprotection system
using single tone or dual tone, which is
integrated in the QAM digital band.
➢ Digital transit filter.
➢ Input/output combiner.
Other optional equipment
that can be added
External teleprotection unit type TPU-1 or
CTP-1
Front-plate indications
Signalling
➢ Terminal powered.
➢ Terminal status.
➢ Data port state.
➢ Local terminal in loop.
➢ Remote terminal in loop.
➢ Power-boosting command.
➢ Call reception.
➢ Call transmission.
Alarms
• Power-supply failure.
• Loss of synchronism.
• Pilot loss.
• Low Signal/Noise ratio.
• Excess or low receive level in digital
channel.
• BER alarm in digital channel.
• General alarm.
(4)
• Remote alarm.
(5)
(
4
)
It lights up when one of the following alarms is produced: Power-supply failure, Amplifier overload, Low output level in
amplifier, Loss of synchronism, Pilot loss, Low Signal/Noise ratio, AF limiter operation, Temperature alarm, Terminal
configuration error, Hardware failure, BER alarm, Excess or low receive level and Failure in G.703 interface input.