IBM 5500 Operational, Installation, And Maintenance Manual page 132

132
Chapter 6: Twinax Client Cabling Requirements and Problem Solving
Figure 68: Distribution Panel to Work Stations Except Last Workstation
Connect Meter Leads As Shown Below
Positive at Red Cable
Red
Green
Red
Green
Shield
Shield
a. If surge suppressors are installed on the line, the normal resistance is 36
to 54 W.
Test for Cable Drop to Last Workstation on the Data Path
Use the following procedure to test the cable drop to the last workstation of
the data path:
1. Install the test connector on the cable drop to the last workstation.
2. Check for the resistances shown in Figure 69.
Figure 69: Last Workstation
Connector Meter Leads As Shown Below
Positive
Red
Shield
Shield
a. If surge suppressors are installed on the line, the normal resistance is 175
W
to 225 for red to green and 90 to 110
3. If only the last workstation is failing, do the following steps:
a. Disconnect the last workstation from the cabling system at the
Planning, Installation, and Maintenance Guide
Negative at Blue Cable
Red
Green
Green
Red
Red
Green
Negative
Green
Red
Green
W
for red or green to shells.
Normal Resistance
a
W
0 to 14
W
0 to 14
W
> 5000
W
> 5000
W
> 5000
W
> 5000
Normal Resistance
a
140 to 180 W
65 to 95 W
65 to 95 W