Scene Double SDBX/DA2 User's Guide download pdf (Page 41)

Appendix D: Serial Port Setup and Operation 39

Appendix D: Serial Port Setup and Operation

Applies to SDLink1/S, SDLink2/S and SDLink/RS only

The default settings for serial extension (9600bps, 8 data bits, no parity, 1 stop

bit, RTS/CTS and DTR/DSR loopback) are suitable for the majority of

applications. This appendix describes how you can adjust the baud rate and

hardware flow control for specialist applications.

Serial Interface Setup and Operation

You can configure the baud rate and flow control protocol using jumpers on the

serial daughter board (see Figure 18) in the Remote and/or Local Units.

1. Disconnect the unit’s power supply.

2. Open the unit by unscrewing the two screws on each side of the case.

3. Locate the serial daughter board.

The following sections describe how to adjust the baud rate and hardware flow

control protocol. When you have finished, replace the unit covers.

Figure 18 Position of Baud Rate and Flow Control jumper blocks on Serial

Daughter Board

The circuit board has several jumper blocks in addition to

those shown in Figure 18. Do not adjust any of these settings

as you will cause the extender to operate incorrectly.

Flow Control

Baud Rate

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Scene Double SDBX/DA2 User's Guide Page 41