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$95 HD/LINKer - Invensys Rail

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7.1.2 Unipolar Input/Output<br />

These configurations (figure 7-1) consist of single channels within the <strong>HD</strong>/LINK module.<br />

+<br />

-<br />

VPI Channel 1<br />

03-1<br />

Unipolar Input External<br />

Configuration<br />

Document No.: SIG-00-97-08 Version: C<br />

Figure 7-1. Unipolar Configurations<br />

NOTE<br />

The channel designations for both input and output<br />

channels are depicted in the same way. Input and<br />

output channels are identified by the direction of<br />

arrows on the symbol. Input channels are shown with<br />

arrows pointing towards the main body of the<br />

symbol, while output channels are shown with arrows<br />

pointing away from the main body of the symbol.<br />

7-2<br />

VRO Channel 1<br />

03-1<br />

Unipolar Output<br />

External Configuration<br />

03-1 03-1<br />

Unipolar Input Internal<br />

Configuration<br />

CIRCUIT CONFIGURATIONS<br />

+<br />

-<br />

Unipolar Output<br />

Internal Configuration

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