Serial RS232 Pinout, Command Language

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4Computer Interface

The 9700 comes standard with an RS232 serial interface; a GPIB (IEEE-488) interface is available as an option. All menu settings can be set and retrieved over the computer interface using a simple command language.

Serial (RS232) Pinout

The serial port is located on the back of the 9700, and uses a 9-pin D-type connector with the following pinout (as viewed from the back of the 9700):

1.No connection

2.Tx - Transmit (to computer)

3.Rx - Receive (from computer)

4.DTR - connected to pin 6

5.Ground

6.DSR - connected to pin 4

7.RTS - connected to pin 8

8.CTS - connected to pin 7

9.No connection

The voltage level of the Transmit signal is +/-10V, the Receive signal should be at least +/-5V.

GPIB

An optional GPIB (also known as IEEE-488) computer interface is available for the 9700. Before using this interface, the address must be set using the GPIB Address menu item. The same command set is used for both the GPIB and RS-232 interfaces. Both interfaces may be used at the same time. Responses will be made to the most recently used interface.

Command Language

All menu items can be accessed and selected via the computer interface using a simple command language. The command set is the same for both the RS232 and GPIB interfaces.