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In_Position Output Wiring
In_Position signals are differential EIA 422 outputs from the PCI. External logic that uses
In_Pos/V signals should use a differential receiver such as the 26LS32.
Figure 5-10
Example In_Position Output Wiring
PCI
External Logic
In_Pos
N
+
Gnd
In_Position Outputs
Twisted pair
in cables*
+
-
1
Optional 100 ohms termination
R
1
In_Pos
N
-
Gnd
E1A 422
26LS32
*Note:
Do not connect signal
ground to shield ground.
*Note:
No opto-isolation.
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