CSE Kingfisher PLUS+, Hardware Reference Manual

Page: 73 / 89

Superseded Hardware Manual 7.12 Page 73
1.26 MODEM BOARD M: 4-Wire Lin e Op tio n Bo a rd
The line option board provides a supports communications over 2 and 4-wire leased line circuits. This
option board is designed for use with a PC-1 or MC-1.
The unit can be connected to perform the following functions:
•
2 wire point-to-point
•
2 wire multi-drop
•
4 wire point-to-point
•
4 wire multi-drop
4-Wire Lin e Op tio n Bo a rd S p e c ific a tio n s
Data Rates and Modulation 1200 Bps CCITT V.23FSK
Data Pump SSI312
Equaliser (adaptive) Y
Transmit Level
-10 dBm in 2x 600
Ω
Scrambler/Descrambler Y
Receive Level 0 dBm to -43 dBm
Data Formats Asynchronous
Bit Error Rate (BER) 10
-6
@ S/N 22 dB
Connection 2 or 4 wire RJ12
Termination
600
Ω
at each end of line per pair
Line Isolation 4 kV
Line drive in multidrop configuration
10 drops for 2 wire
20 drops for 4 wire
4-Wire Lin e Op tio n Bo a rd Co n n e c tio n s
4-Wire Line
Function
RJ12 Pin RJ12 Socket RJ12 Plug
654321
BLUE 1
YELLOW 2
GREEN 3
RED 4
BLACK 5
WHITE 6
123456
Tx - 2
Rx - 3
Rx + 4
Tx + 5
4-Wire Lin e Op tio n Bo a rd Wirin g Dia g ra m s
Please see CP-xx Line Option Board wiring diagrams.