HP 34970A manual Ud EC7N

Chapter 5 Remote Interface Reference

RS-232 Interface Configuration

If your computer has a 9-pin serial port with a male connector, use the cable included with the instrument (if you ordered the internal DMM). If you need an additional cable, order the F1047-80002cable which is part of the Ud :>:EDN Pvwz X . This cable has a 9-pin female connector on each end.

The cable pin diagram is shown below (z “xvwz
z Ud :>EC7N	). For proper operation, you	use an
RS-232 cable with the same pinout as shown below.

RS-232 Cable

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Here are a few things to check if you are having problems communicating over the RS-232 interface. If you need additional help, refer to the documentation that came with your computer.

∙Verify that the instrument and your computer are configured for the

same baud rate, parity, and number of data bits. Make sure that your

computer is set up for 8 v w and 8 w (these values are fixed on the instrument).

∙Verify that you have connected the correct interface cable and adapters. Even if the cable has the proper connectors for your system, the internal wiring may not be correct. You can use the Ud :>:EDN

Pvw X to connect the instrument to most computers or terminals.

∙Verify that you have connected the interface cable to the correct serial port on your computer (COM1, COM2, etc.).

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