I-E96-217A
A - 1
APPENDIX A - TERMINATION UNIT (NTCU01)
INTRODUCTION
NOTE: This instruction provides information pertaining to the physi-
cal installation of the SPM only. For complete termination cable and
Termination Unit (TU) installation procedures, refer to Termination
Unit Manual I-E93-911.
The Serial Port Module (SPM) can use an optional NTCU01 to
provide connection for a diagnostic terminal to serial port 1. A
second RS-232C connector on this TU can also be used to con-
nect a computer or modem to port 2 instead of using the SPM
faceplate connector.
A NKTU01 termination cable connects the SPM to the TU. This
cable connects the handshaking signal and data lines between
the SPM and TU.
The same RS-232C cable wiring requirements shown in Figure
apply when connecting Data Terminal Equipment (DTE)
(e.g., computer or diagnostic terminal) or Data Communication
Equipment (DCE) (e.g., modem) to the RS-232C connectors on
the NTCU01.
To determine TU signal routing, refer to Figure
. This figure
is a schematic diagram of the NTCU01. Refer to Figure
for
Figure A-1. NTCU01 Schematic Diagram
RX
TX
CTS
DSR
RLSD
RTS
DTR
PROT GND
SIG GND
SIG GND
PROT GND
RX
TX
CTS
DSR
RLSD
RTS
DTR
RX DATA 1
TX DATA 1
CTS 1
RTS 1
DTR 1
PROT GND
RX DATA 2
TX DATA 2
CTS 2
RTS 2
DTR 2
3
2
5
6
8
4
20
1
7
7
1
3
2
5
6
8
4
20
R1
10
1 W
Ω
R2
10
1 W
Ω
17
21
25
29
33
14
20
24
28
32
36
P2
P3
P1
E1
TP27270A