Publication No. 980935 Rev. A
3152B User Manual
EADS North America Test and Services
Programming Reference 5-37
USER
Discrete
Selects arbitrary waveform mode. Arbitrary waveforms
must be loaded into 3152B memory before they can be
re-played.
SEQuenced
Discrete
Selects sequenced waveform output. To generate a
sequence, first download waveforms to different
memory segments and then build a sequence table to
generate a complex waveform using these segments.
SWEep
Discrete
Selects the sweep generator function. Sweep generator
functions and parameters are programmable.
MODulated
Discrete
Selects the modulated waveforms. There is an array of
built-in modulation schemes. However, you can also
build custom modulation schemes using the arbitrary
function.
HALFcycle
Discrete
Selects the half cycle function.
COUNter
Discrete
Selects the counter/timer auxiliary function. Note that
when you select this function, all waveform generation
of the 3152B are purged and the 3152B is transformed
to behave as if it was a stand-alone counter/timer.
Response
The 3152B returns FIX, USER, SEQ, SWE, MOD, HALF, or COUN depending on the current 3152B operating
mode.
Run Mode
Commands
The Run Mode Commands group is used to synchronize device
actions with external events. These commands control the trigger
modes of the waveform generator. The instrument can be placed in
Triggered, Gated or Burst mode. Trigger source is selectable from
external, a backplane trigger line, an internal trigger generator that
has asynchronous, free-running programmable intervals, and a
software command. The 3152B also has a built-in internal re-trigger
generator that provides accurate and self-repeating control from
waveform end to waveform start.
Run Mode command settings affect all waveform shapes equally
except when using the modulated waveforms. In the case of
modulated waveforms, the output idles on either the carrier waveform
or on a DC level until stimulated to output a modulation cycle or a
burst of cycles. Additional information on the run mode options and
how the generator behaves in the various run mode options is given in
Chapter 3. Factory defaults after *RST are shown in the default
column. Parameter low and high limits are given where applicable
.
Table 5-4, Run Mode Commands
Keyword
Parameter Form
Default
3152A
HS
:INITiate
[:IMMediately]
:CONTinuous
OFF | ON | 0 | 1
1
9
1110A
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