Hardware Installation
Page 3-6
BUS Termination
Three resistors (100 ohm, 150 ohm and 200 ohm) are
supplied with the system bus terminal socket. They are
located in a plastic bag inside the socket.
These resistors are used to terminate the system bus in
accordance with the wiring rules detailed in the following
pages.
Note:
150 ohm resistor is provided but is no longer
required for bus termination.
Resistor
Colour Code
100 ohm
Brown
Black
Black
Black
Red
150 ohm
Brown
Green
Black
Black
Red
200 ohm
Red
Black
Black
Black
Red
Cable
All cabling lengths referred to this in manual are based on 0.5 mm
diameter cable.
The length of any cabling can be estimated by measuring the resistance
of the cable when shorted at one end (ensure any equipment has been
disconnected from the cable.
The standard cable resistance for 0.5 mm cable is 97.8 ohms / 1000 m
Cable pair
length (metres)
Resistance
(ohms)
Cable pair
length (metres)
Resistance
(ohms)
10
2.0
90
17.6
20
3.9
100
19.6
30
5.9
110
21.5
40
7.8
120
23.5
50
9.8
130
25.4
60
11.7
140
27.4
70
13.7
150
29.3
80
15.6
160
31.3
BU S
Summary of Contents for Commander i
Page 11: ...Chapter One Introduction to the Commander i System ...
Page 19: ...Chapter Two System Description ...
Page 23: ...Chapter Three Hardware Installation ...
Page 24: ......
Page 57: ...Chapter Four Programming ...
Page 83: ......
Page 84: ...Chapter Five Commander Customer Training ...
Page 89: ...Chapter Six Maintenance and Troubleshooting ...
Page 93: ......
Page 94: ...Appendix A Installation Summary ...
Page 102: ...Appendix B Factory Default Values ...
Page 109: ...Appendix D Commander i System User Guide ...
Page 110: ...Telstra Commander i System User Guide Serial Item 749 025 Issue 2 ...
Page 113: ...1 Getting To Know Your Commander i ...
Page 117: ...2 Answering Calls ...
Page 120: ...3 Making Calls ...
Page 123: ...4 Call Handling ...
Page 127: ...5 Other Facilities ...
Page 131: ...6 Programming ...
Page 142: ...Appendix F Commander i AFU User Guide ...
Page 143: ...Telstra Commander i Analogue Facilities Unit User Guide Serial Item 749 35 Issue 2 ...
Page 145: ...1 Introduction ...
Page 148: ...2 How To Use The AFU ...
Page 152: ...3 AFU Quick Reference Card ...