Table of Contents
Advertisement
The filter will turn on.
3.9.6 Rate (S)
The rate command controls the integration period and the
usable
resolution
of the Model 199. Table 3-10 lists the
usable resolution
on each function for the two S modes.
The integration period is dependent
on usable resolution
as shown in Table 3-10.
Upon power up or after the instrument
receives
a DCL
or SDC conimand,
the Model 199 will return to the default
condition.
Programming
Example-From
the front panel,
set the
display of the Model 199 for DCV at 4%d resolution.
Now
enter the following
statements
into the computer:
When END LJNE is pressed the second time, the Sl rate
will be selected
(5% digit resolution).
Table 3-10. Rate Command
Summary
?Omsec
@ 50Hz,
16.67msec @ 6OHz.
3.9.7 Trigger
Mode
(T)
Triggering provides a stimuh~s to begin a reading conver-
sion withii the instrument.
Triggering may be done h two
basic ways: in a continuous
mode, a single trigger com-
mand is used to start a continuous
series of readings;
111
a one-shot trigger mode, a separate trigger stimulus is re-
quired to start each conversion.
The Model 199 has eight
trigger commands
as follows:
TO = Continuous
on
Talk
Tl = One-shot
on Talk
T2~ = Continuous
on GET
T3 = One-shot
on GET
T4 = Continuous
on X
T5 = One-shot
on X
T6 = Continuous
on External Tr&er
l7
= One-shot
on External Trigger
The trigger modes are paired acqorc#ng to the type of
stimulus
that
is used to trigger the instrument.
In the 'ITI
and Tl modes, triggeling
is performed
by addressing
the
Model 199 to talk. In the T2 and T3 modes, the IEEE-488
multiline
GET command
performs
the trigger function.
The instrument
execute (X) character provides the trigger
stimulus in the T4 and T5 modes. External trigger pulses
provide the trigger stimulus in the T6 and T7 modes.
Upon power up or after the instrument
receives a DCL
or SDC command,
the Model 199 will return to the default
condition.
NOTES:~
1. The front panel TRIGGER
button can be used to trig-
ger readings.
See paragraph
2.8 for details.
2. In T6, the unit provides its own trigger.
Programming
Example--Place
the instrument
in the one-
shot on talk mode with the following program:
1 B F:EtlDTE 726
In this example, the ENTER statement addresses the Model
~199 to talk, at which point a single reading is triggered.
When the reading has been processed,
it is sent out over
the bus to the computer,
which then displays the result.
3-18
Hide quick links:
Advertisement
Table of Contents
