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SECTION 4
IEEE-488 PROGRAMMING
4.1 INTRODUCTION
This section contains information
on programming
the
Model 194 over the IEEE-488 bus. Detailed instructions
for
all programmable
functions
are included;
however, infor-
mation concerning operating modes presented elsewhere
is not repeated here. Refer to Sections 2 and 3 for infor-
mation not found in this section.
A detailed overview of the IEEE-488 bus is located in Ap-
pendix G. Device-dependent
commands are summarized
on pages 4-17 through
4-19 and in Appendix
E.
Section 4 contains the following
information:
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
A Short-cut
to IEEE-488
Operation:
Gives
a
simple step-by-step procedure for getting on the
bus as quickly
as possible.
Bus
Connections:
Shows typical
methods
for
connecting
the instrument
to the
bus.
Interface
Function
Codes:
Defines IEEE standard
codes that apply to the instrument.
Primary
Address
Selection:
Tells how to program
the instrument
for the correct primary
address.
Controller
Programming:
Demonstrates
simple
programming
techniques
for typical
IEEE-488
c"n~rollers.
Front
Panel
Aspects
of IEEE-488
Operation:
Describes the operation of the LOCAL key and bus
status indicators,
and summarizes
front panel
messages that may occur during bus operation.
General
Bus Command
Programming:
Outlines
methods for sending general bus commands lo the
instrument.
Device-Dependent
Commands:
Contains
descriptions
of most of the programming
com-
mands used to control the instrument
over the
bus.
Using
the Translator
Mode:
Describes an alter-
nate
programming
method
of using
easily
recognized user-defined
words in place of devicc-
dependent
commands.
4.11
Bus Data Transmission
Times:
lists typic.11 times
when accessing instrument
data over the bus.
4.2 A SHORT-CUT
TO IEEE-488 OPERATION
Step 1: Connect Your Model
194 to the Controller
Step
2:
Select
the Primary
Address
The primary address of your Model 194 is set to 'J at thC
factory, but you can program other values betxwcn 0 and
30 by pressing SHIFT, OTHER, ENTER, and then using
the data entry keys to change the primary 'Iddress. Once
the desired value is displayed,
press ENTER to program
the value.
More detailed information
on primary address selecti<>n
is located in paragraph 4.5.
Step 3: Write Your Program
Even the most basic operations will rcquirc that y<,u x\-rile
a simple program to send commands and read back dat,l
4-1
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