Specifications

December 2008 Page 18–5
Chapter 18. High Speed Data (64R, 64V, 64K) Module
18
6. Set the test equipment settings.
Follow the setup menu in the Fireberd or the
Lynx to make sure the test frequency and the
interface are the same on the test equipment as
it is on the 64K module. This should be the
default settings of 64 kbps data rate and the
electrical interface.
7. Put the FOCUS framer(s) in loop back.
You do this through the FCS.
To make the loop back using the FCS,
execute the “Framer Local Loop Back…”
command on the FCS Test menu for each
transceiver (e.g., X1-1, X2–1) on the chassis.
(See the FCS online help facility: Loop Back
Functions ↓ Transceiver Loop Back Tests ↓
Turning On a Loop Back Test).
This method loops the signal back through the
64K module and the test set.
8. Observe the test results.
If the TX and RX LEDs on the module are lit,
this indicates that data is flowing through the
64K module. Also, if the Bit Error and Block
Error windows on the test set display a zero
(0), this indicates that data is flowing error
free and continuously through the 64k module
and the test set.
18.6 FOCUS 64KFE Fiber Optic
Extension & RFL 9300
Modification Kit
18.6.1 64KFE Description
The 64KFE is the 64F “interface module” for the
FOCUS 64K Module. It provides a fiber optic
extension for use with your RFL 9300 Charge
Comparison Relay, using a digital communication
channel and an RS422/449 electrical connection.
It operates at 64 kbps and provides the synchro-
nous clocks required to sync your relay to the 64K
Module. One pair of multi-mode (fiber optic)
cables with type ST connectors is required at each
end of the communication path at which you are
using a 64KFE.
The 64KFE converts the data from the relay into a
format usable by the FO section of the FOCUS
64K Module. The module then transmits the data
over one DS0 time slot to the remote FOCUS
terminal. At the remote terminal, the 64K Module
converts the digital data back into a format to
input directly into the protective relay either via
fiber cables to a second 64KFE or via metallic
wires. The data is then converted back into
standard RS422/449 data for input into the remote
relay, thus completing the path.
Figure 18–3.
FOCUS 64KFE Fiber Optic Extension
18.6.2 64KFE Application
The 64KFE lets you replace the metallic cable
normally used between your RFL 9300 Charge
Comparison Relay and FOCUS with your own
fiber optic cables. Using a fiber optic connection
between the relay and the FOCUS multiplexer
decreases susceptibility to surges and transients
which normally exist inside power substations.
When installing the 64KFE for use with your RFL
9300 Charge Comparison Relay, you must also
change two components on the relay’s PC board.
These parts, supplied with the 64KFE modifica-
tion kit (see Figure 18-5), replace a capacitor with
a transient voltage suppressor and a limiting
resistor with a positive temperature coefficient
Technologies, Inc.
64KFE
F020-0E6MN-001
Ph. 800-785-7274
TX
RX