RFL Electronics 9780 - Purpose of Equipment; Purpose of this Manual

RFL 9780 RFL Electronics Inc.
April 8, 2003 2-4 (973) 334-3100
2.2 PURPOSE OF THIS MANUAL
This manual provides operation and maintenance information for the RFL 9780 Programmable FSK
Powerline Carrier System. Included are an overall functional description of its purpose, a physical
description and specifications, installation instructions, operating procedures, maintenance procedures,
theory of operation, and parts information for all circuit card modules. The various RFL 9780 front
panels are shown in Figure 2-1.
WARNING
MANY OF THE CIRCUITS IN THE RFL 9780 ARE FACTORY TUNED ACTIVE
CIRCUITS. NONE OF THE PARTS IN THESE CIRCUITS ARE FIELD
REPLACEABLE. UNAUTHORIZED MODIFICATIONS OR ALTERATIONS TO
THESE CIRCUITS WILL COMPROMISE SYSTEM PERFORMANCE.
2.3 PURPOSE OF EQUIPMENT
The RFL 9780 is a frequency-shift keyed (FSK) transmitting and receiving terminal. It is an enhanced
version of the field-proven technology used in the RFL 6780 and 6780P. The RFL 9780 requires half of
the chassis space of the RFL 6780P, offers fully programmable timers, simplifies the setup process and
fully complies with ANSI/IEEE C93.5-1997.
The RFL 9780 was designed to transmit guard and trip commands from one point to another over a
powerline system, either alone or in multiplex with other communication channels. The RFL 9780 is
capable of two-frequency (2F) or three-frequency (3F) FSK operation. The 2F mode can be used to
send either a single guard or a single trip command, or the 3F mode can be used to send three-state
information.
The RFL 9780 can be used in any of the following protection schemes:
1. Permissive Transfer Trip
2. Direct Transfer Trip
3. Phase Comparison
4. Dual-Channel Direct Transfer Trip
5. Directional Comparison Relaying (Blocking or Unblocking)