6 - Introduction to Programming

SPACE

Seven data bits with space parity (parity is always false)

NONE

Eight data bits without parity

Parity options are stored in non-volatile memory.

Baud Rate

The front panel Address key lets you select one of the following baud rates, which is stored in non- volatile memory:

300

600

1200

2400

4800

9600

RS-232 Flow Control

The RS-232 interface supports several flow control options that are selected using the front panel Address key. For each case, the dc source will send a maximum of five characters after holdoff is asserted by the controller. The dc source is capable of receiving as many as fifteen additional characters after it asserts holdoff.

XON-XOFF

A software handshake that uses the ASCII control code DC3 (decimal code

 

19) to assert hold-off, and control code DC1 (decimal code 17) to release

 

hold-off.

RTS-CTS

The dc source asserts its Request to Send (RTS) line to signal hold-off

 

when its input buffer is almost full, and it interprets its Clear to Send (CTS)

 

line as a hold-off signal from the controller.

DTR-DSR

The dc source asserts its Data Terminal Ready (DTR) line to signal hold-

 

off when its input buffer is almost full, and it interprets its Data Set Ready

 

(DSR) line as a hold-off signal from the controller.

NONE

There is no flow control.

Flow control options are stored in non-volatile memory.

Introduction to SCPI

SCPI (Standard Commands for Programmable Instruments) is a programming language for controlling instrument functions over the GPIB. SCPI is layered on top of the hardware-portion of IEEE 488.2. The same SCPI commands and parameters control the same functions in different classes of instruments. For example, you would use the same DISPlay command to control the dc source display and the display of a SCPI-compatible multimeter.

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Agilent Technologies D, 66311B, 66309B, 66111A manual Introduction to Scpi, RS-232 Flow Control, Baud Rate
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66111A, 66309B, 66311B, D specifications

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