2.At the computer, initialize the serial port to 1200 baud, eight bit ASCII character code, one stop bit, and no parity. Use the following MS-DOS2Qbasic program as an example:

OPEN "COM2;1200,N,8,1" FOR RANDOM AS #1 PRINT #1, "CLOSE 5"

PRINT #1, "CLOSE? " INPUT #1,A$

PRINT A$ END

Calibrating the Switch

No calibration is required.

Maintaining the Switch

Clean the connector ends with a lint-free tissue and alcohol before every mating. See the Cleaning Connectors section.

Clean the internal connectors and the panel-mounted connector bulkheads periodically or when high losses are suspected. The internal connectors can be accessed by removing the connector panel:

1.Remove the retaining screws of the connector panel.

2.Slowly pull the panel out to the full extent of its guide rails (Figure 13).

Figure 13: Removing the Connector Panel

3.Remove the connectors from the connector bulkheads.

4.Clean the connector ends and the bulkhead mating sleeves with a lint-free tissue and alcohol.

5.Reinstall the connectors into the bulkheads.

2MS-DOS is a registered trademark of Microsoft Corporation.

Operating and Maintenance Instructions – 21

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HP SB manual Calibrating the Switch, Maintaining the Switch, Print #1, CLOSE? Input #1,A$ Print A$ END