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.
