Racal Instruments 3152, User Manual

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Using The Instrument 3-8
The command:
FREQuency:RASTer {<frequency> | MINimum |
MAXimum}
sets the sample clock frequency for the user and sequenced
functions. MIN selects the lowest frequency allowed for the currently
active segment or sequence. MAX selects the highest frequency
allowed for the currently active segment or sequence. The default
sample clock frequency setting is 1 MHz for all functions.
Note that the output frequency depends on the number of points
specified in the waveform. The output frequency can be computed
using the following formula: Output Frequency = Sample Clock /
Number of points in the active segment.
The query:
FREQuency:RASTer?
queries the sample clock frequency setting for the arbitrary segment
or sequence currently active and returns a value in hertz.
Selecting the Sample
Clock Source
Use the following command to select the source for the sample
clock for the user and sequenced functions:
FREQuency:RASTer:SOURce {EXT | INT | ECLTRG0}
EXT selects an external clock source. The external source is
applied to the front panel CLOCK IN connector. INT selects the
internally synthesized clock synthesizer. ECLTRG0 selects a
sample clock that is available on the backplane. Note that
ECLTRG0 is always the active sample clock source when the Model
3152 is set to operate in phase synchronization mode.
The query:
FREQuency:RASTer:SOURce?
queries the sample clock source setting and returns EXT, INT or
ECLT.
Programming the
Output Amplitude
and Offset
Use the following command to program the peak-to-peak amplitude
for the generated waveform.
VOLTage {<amplitude>|MINimum|MAXimum}
MIN selects the smallest amplitude. MAX selects the largest
amplitude. The default amplitude is 5.00 V (into 50
S
).
The query:
VOLTage?
queries the output amplitude for the currently selected function and
returns a value in volts.