IBM 5500 Operational, Installation, And Maintenance Manual page 125

Red
Green
Orange
Black
Figure 59: Test Connector
2. Check for resistances shown in Figure 60.
Figure 60: IMD or Direct-Connect Cable Check
Resistance Measurement
Measure Resistance
From
Phase A to green
Phase B to red
Phase A to B
Phase A to shield
Phase B to shield
Twinax shield to
cabling system shield
Twinax Y Test
A twinax Y (P/N 8642550) is shown in Figure 61.
Note: All cabling system connectors are equipped with shorting bars that
function as the switches in the schematic. The contacts are open when the
connector is plugged in.
Shield
Impedance Matching
Device
18 to 22 W
18 to 22 W
> 100 kW
> 100 kW
> 100 kW
< 1 W
Red
Green
Orange
Black
55E1I036
Direct Connect Cable
< 1 W
< 1 W
> 100 kW
> 100 kW
> 100 kW
< 1 W
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