OmniCare EVC System
Installation & Commissioning Manual
OmniCare issue 1
89
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A.2.2 Readings with Local Unit Disconnected
A more accurate reading can be obtained by disconnecting the
local unit and then measuring the resistance between the CANH
and CANL conductors.
Use the readings shown in Table A.3 to calculate the distance
when the Local Unit is disconnected.
Table A.3 — Resistance reading with Local Remote Unit Disconnected
A.2.3 Resistance Readings when using Repeaters
When Repeaters have their jumpers fitted to increase the range,
the termination resistance is modified. The following tables
should be used to determine the approximate cable length.
Table A.4 — Resistance reading for 2 Repeaters with Jumpers Fitted
Table A.5 — Resistance reading from a Remote / Console or Repeater
without Jumpers Fitted to a Repeater with Jumpers Fitted
A more accurate reading can be obtained by disconnecting the
local unit and measuring between CANH and CANL.
Table A.6 — Readings for Distant Repeater with Jumpers Fitted
50m
100m
150m
200m
250m
300m
1.0mm 151
152.8
154.6
156.4
158.2
160
1.5mm 150.4
151.6
152.8
154.0
155.2
156.5
2.5mm 150
150.7
151.4
152.16
152.9
153.6
50m
100m
150m
200m
250m
300m
1.0mm 37.8
38.23
38.66
39.0
39.5
39.9
1.5mm 37.65
38.0
38.23
38.52
38.8
39.1
2.5mm 37.53
37.7
37.9
38.07
38.25
38.42
50m
100m
150m
200m
250m
300m
1.0mm 50.57
51.36
52.13
52.9
53.64
54.38
1.5mm 50.31
50.84
51.36
51.88
52.39
52.9
2.5mm 50.1
50.43
50.75
51.07
51.39
51.71
50m
100m
150m
200m
250m
300m
1.0mm 76.51
78.32
80.13
81.94
83.7
85.56
1.5mm 75.91
77.12
78.33
79.54
80.75
81.96
2.5mm 75.44
76.18
76.92
77.66
78.4
79.14
