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Mixed
Output Type
Standard
Waveforms
1-18
Mixed trigger advance source defines special trigger behavior
where the 2074 expects to first receive remote bus trigger and only
then accept hardware triggers. The first time that the 2074 is placed
in this mode, all EXT (rear and front panel hardware) triggers are
ignored until a remote *TRG is issued. Following the first software
trigger, subsequent triggers from the remote interface (software) are
ignored and only rear and front panel triggers are accepted by the
instrument.
Table
1 -2, Trigger Source Options Summary
Trigger
Source/ Description
Option
External
Interface trigger commands
Rear panel TRIG IN connector
Front panel MAN TRIG button
Bus
Interface trigger commands
Rear panel TRIG IN connector
Front panel MAN TRIG button
Mixed
Interface trigger commands
Rear panel TRIG IN connector
Front panel MAN TRIG button
(*) First trigger from BUS only,
subsequent triggers from EXT only
The Model 2074 can output five types of waveforms: Standard,
Arbitrary, Sequenced and Modulated waveforms. The various
output types are described in the following paragraphs.
The 2074 can generate an array of standard waveforms. The
waveforms are generated mathematically from standard equations
and converted to waveform coordinates that are downloaded to the
working memory. Unlike analog function generators that use
electrical circuits to produce the wave shapes, the 2074 must
compute the waveform coordinates every time a new function is
selected or every time the parameters of the function change.
The 2074 can produce 11 standard waveforms: sine, triangle,
square, ramp and pulse, sinc, gaussian and exponential pulses, dc
and Pseudo-random noise. Some of the waveforms parameters can
be modified such as start phase for sine and triangle, duty cycle for
square, rise and fall times for pulses etc. The standard waveforms
Status
Disabled
Active
Active
Active
Disabled
Disabled
Active(*)
Active(*)
Active(*)
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