OPU-1
UNIVERSAL POWER-LINE CARRIER SYSTEM TYPE OPU-1
GENERAL DESCRIPTION - Rev 7 (May 2019)
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It also has the software necessary for decision making in the
transmission and reception of commands, as well as software for
input/output management, link supervision and the carrying out of tests.
Two frequencies are assigned to each command signal, and a single
frequency is assigned to the guard signal.
2.5.2.2
Teleprotection terminal using FSK channels
The analog teleprotection terminal using FSK channels is able to transmit and receive up to
four independent commands and in any combination in a 4 kHz analog band.
The terminal can be constituted by either one or two different modules according to the
number of commands. For one or two commands, ABIT.01 module (commands A and B) is
only necessary. For three or four commands, in addition to the previous one, CDIT.01
module (commands C and D) is also necessary.
ABIT.01
This module contains the Digital Signal Processor (DSP), which
generates the FSK channels in transmission (at the programmed
frequency and shift) and implements for each channel the elements
which differentiate between the guard and command signals in reception.
It also has the software necessary for decision making in the
transmission and reception of commands, as well as software for
input/output management, link supervision and the carrying out of tests.
It contains two command input and output circuits together with five
relays for signalling and/or alarm, configurable by the user.
CDIT.01
This module contains two command input and output circuits together
with four relays for signalling and/or alarm, configurable by the user.
2.5.2.3
Teleprotection terminal using dual tone
The analog teleprotection terminal using dual tone is able to transmit and receive up to four
independent commands and in any combination in a 1 kHz, 2 kHz or 4 kHz analog band.
The terminal is constituted by a single module.
