Chapter 5 Remote Interface Reference

RS-232 Interface Configuration

gh6<>< Tyyy

A character “v consists of all the transmitted bits that make up a

single character. The frame is defined as the bits from the v to the

last w , inclusively. Within the frame, you can select the baud rate, number of data bits, and parity type. The instrument uses the following frame formats for seven and eight data bits.

Parity:

EVEN, ODD

Start

Bit

7 Data Bits

Parity Stop Bit Bit

Parity:

NONE

Start

Bit

8 Data Bits

Stop

Bit

S y

To connect the instrument to a computer or terminal, you must have the proper interface cable. Most computers and terminals are DTE

(Qvv hzv R) devices. Since the instrument is also a DTE device, you must use a DTE-to-DTE interface cable. These cables are

also called 4yz

, yzv

, or xz xvwz

.

The interface cable must also have the proper connector on each end and the internal wiring must be correct. Connectors typically have

9 pins (DB-9 connector) or 25 pins (DB-25 connector) with a “male” or “female” pin configuration. A male connector has pins inside the connector shell and a female connector has holes inside the connector shell.

If you cannot find the correct cable for your configuration, you may have

to use a vyvz . If you are using a DTE-to-DTE cable, make sure the adapter is a “straight-through” type. Typical adapters include gender changers, null-modem adapters, and DB-9 to DB-25 adapters.

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HP 34970A manual Gh6 Tyyy, Yzv Or xz xvwz