Appendix B – Digital Input Voltage Adjustment

B.2 DIGITAL IO MODULE:

The digital IO module accepts 2 to 6 digital inputs depending on options. By default these inputs are set up to accept input voltages from 12 to 24 volts dc. The user can change the input voltage range to 5 to 12 volts dc by moving jumpers internally on the module. This involves removing the digital IO module from the recorder.

To do this, remove the screws marked B in Figure B-1 and gently pull the module from the enclosure. Note that the rear panel is loose and not connected to the circuit board.

Once the module is removed, identify the jumpers as shown in Fig B-4. Note that there could be up to 6 jumpers present. The jumper locations are as follows:

2 Input Board:

P2 – Input 1; P3 – Input 2

Jumpers correspond to inputs from right to left when looking at the terminal block side of the board.

Jumpers are shown in position 1-2.

The links are as follow:

Position 2–3 12 to 24Vdc Input

Position 1–2 5 to 12Vdc Input

Set the jumpers as required and reinstall the board into the recorder chassis. Take care to align the connector with the socket before applying pressure to the board.

Replace the panel and the screws.

Fig B-4 Digital IO Module Jumpers (2 Channel shown)

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Omega Speaker Systems RD8300 manual Input Board, Fig B-4 Digital IO Module Jumpers 2 Channel shown
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RD8300 specifications

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