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SECTION
3
3.1 INTRODUCTION
This section cdntains
information
on programming
the
Model 199 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.
Additional
I!ZEE-488 information
is provided
in the
appendix.
Section 3 contains the following information:
3.2
3.3
3.4
3.s
3.6
3.7
3.8
3.9
A Short-cot
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 con-
necting 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 a typical ~IEEE-488
controller.
Front
Panel
Aspects
of
IEEE-488
Operation:
Describes the operation of the bus status indicators,
and summarizes front panel messages that may oc-
cur during bus operation.
General Bus Command
Programming:
Outlines
methods for sending general bus commands to the
instrument.
Device-Dependent
Commands:
Contains descrip
tions of most of
the
programming commands used
to control the instrument
over the bus.
3.lJl
3.ll
3.12
Using the Translator
Mode: Describes
an alternate
programming
method
of using easily recognized
user-defined
words in place of device-depeitdent
commands.
Bus Data Transmission
Tiss:
Lists typical times
when accessing
instrument
data over the bus.
Scanner
Pmgmmming:
Discusses
programming
commands
used
with the
optional
Model
1992
Scanner.
3.2 A SHORTCUT
TO IEEE-488 OPERATION
The paragraphs below will take you through a step-by-step
procedure to get your Model 199 on the bus as quickly as
possible and program basic operating modes. Refer to the
remainder
of Section
3 for detailed
information
on
IEEE-488 operation
and programming.
Step 1: Connect Your Model 199 to the Controller
With power off, connect the Model 199 to the IEEE-488 in-
terface of the controller
using a standard interface cable.
Some controllers
include
an integral cable, while others
require a separate cable. Paragraph 3.3 discusses
bus con-
nections in more detail.
Step 2: Select the
Primary
Address
Much like your home address,
the primly
address is a
way for the controller
to refer to each device on the bus
individually.
Consequently,
the primary address
of your
Model 199 (and any other devices on the bus, for that mat-
ter), must be the same as the primary address specified
in the controller's programming
language, or you will not
be able to program instrument
operating
modes and ob-
tain data over the bus. Keep in mind that each device on
the bus must have a different
primary address.
3-1
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