Ibm Cabling System Tests - IBM 5500 Operational, Installation, And Maintenance Manual

IBM Cabling System Tests

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Chapter 6: Twinax Client Cabling Requirements and Problem Solving
This section contains tests for accessories used with the IBM Cabling System.
The tests are:
• Impedance matching device or direct-connect cable check
• Twinax Y test
• Twinax terminator assembly test.
Impedance Matching Device or Direct-Connect Cable Check
Figure 58 shows an impedance matching device (IBM P/N 6091070).
Note: The resistor assembly is not present for direct-connect cables.
P h a s e A
R e s is to r
A s s e m b ly
P h a s e B
Tw in a x ia l
C o n n e c to r
A
B
(E a c h re s is t o r is 2 0 o h m s .)
Figure 58: Impedance Matching Device
Use the following procedure to test the IMD or direct-connect cable:
1. Install a test connector (see Figure 59) on the IBM Cabling System
connector of the impedance matching device or direct connect cable.
Planning, Installation, and Maintenance Guide
R e d
(t o p h a s e B )
G re e n
(t o p h a s e A )
S h ie ld
IB M C a b lin g
S y s te m C o n n e c to r
G re e n
R e d
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