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Instrument and Programming Languages
The purpose of this manual is to teach you how to use the HP E1429A/B
digitizer. To do this, the manual uses block diagrams, flowcharts, and
example programs. In most cases, the manual’s example programs list only
the digitizer’s SCPI commands. The I/O (input/output) constructs depend on
the programming language you use.
SCPI Programming SCPI (Standard Commands for Programmable Instruments) is an
ASCII-based instrument command language designed for test and
measurement instruments. The message-based digitizer has an on-board
microprocessor which interprets the ASCII command strings and returns
ASCII formatted results.
Command Listings The typical format of commands listed in the command reference and
throughout this manual is:
TRIGger[:STARt]:TIMer1 <period>
To aid in learning the digitizer command set, all headers are included
in the example programs; however, the headers are abbreviated. In an
example program, the previous statement with a period parameter of
10
µs would appear as:
TRIG:STAR:TIM1 10E-6
Note Chapter 4 contains more information on the structure and execution of SCPI
commands.
Coupled Commands Some of the digitizer SCPI commands are functional or value coupled.
Functionally coupled commands are those that for one command to have
affect, another command must be set to a particular value. Value coupled
commands are those where changing the value of one command, changes
the value of the others.
28 Gettin
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Started Chapter 1