Hardware Installation
Commander i+ Product Service Manual - Issue 2
Page 3-13
Extended Star Wiring
Incorrect Example
The following is an example of an incorrect wiring configuration:
1.
Master station number 1 is located more than 10 metres from the
centre.
2.
A unit within 10 metres of the centre is terminated.
3.
One unit is terminated with 100 ohms instead of 200 ohms.
4.
More than one unit is terminated on a branch (only the end unit on a
branch must be terminated).
5.
One branch is over 150 metres in length.
1.
The sum of the distance of all branches is greater than 400 metres:
50 + 100 + 3 + 50 + 80 + 40 + 160 = 483 metres
AFU
200 ohms
200 ohms
200 ohm
Master Station 1
200 ohms
200 ohms
100 metres
50
m
etre
s
80
m
etre
s
40
m
etre
s
160 metr
es
200 ohms
10
m
et
res
Standard Station
Standard Station
Standard Station
Standard Station
Standard Station
200 ohm
Standard Station
✘
Unit within 10 metres
of centre is terminated
✘
100 ohm
✘
Star termination
is 200 ohms
Only end of branch
is terminated
50
m
etre
s
✘
✘
Branch length longer
than 150 metres
The sum of each branch
is more than 400 metres
50+100+3+50+80
+40+160=483 m
3m
Master station more
than 10 metres from
star centre
✘
Bus Socket
Bus Wiring (0.5 mm diameter)
Station Bus Cord
Legend
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6
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 ...