Connecting the VP-440 via the INPUT SELECT
Terminal Block Connector
The INPUT SELECT contact closure remote control pins include a GND pin and six input pins
(H1 to H4 and PC1 to PC2) for selecting an input.
The contact closure remote control pins operate in a similar way to the INPUT buttons
(see Using the Front Panel buttons on page 12). Using the contact closure remote control
(also known as push-to-make momentary contact) you can select any of the inputs.
To select inputs via contact closure:
• Momentarily connect the required input pin on the INPUT SELECT terminal block
connector to the GND (Ground) pin of the INPUT SELECT terminal block connector.
Figure 7: Connecting the Contact Closure Remote Control PINs
For more information on controlling the input buttons externally, see Controlling VP-440 via
the RS-232 Terminal Block Connectors on page 34.
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