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User Manual 3153
Using The Instrument 3-18
1. You can mix operating modes between channels.
2. Each channel has its own trigger input.
3. Channels can be coupled for synchronous operation. When coupled,
channel 1 becomes master and channels 2, 3 or both become slaves.
4. In master-slave mode, the channel 1 trigger input is available. All other
inputs are disabled.
5. Start phase relationship is retained in master-slave mode. All channels will
start generating waveforms at the same time regardless of their respective
sample clock frequency. There is a possibility of a forced delay after
trigger to account for the channel with the slowest waveform in the loop.
6.
The Master channel overrides operating modes of the slave channels.
Slave channels recover to their previous operating mode (i.e., continuous,
trigger modes, etc.) after de-coupling from the master channel.
Gated Mode
The Model 3153 can be set to operate in Gated mode only after the
INIT:CONT OFF command has been received. The output remains at a
DC level as long as the front-panel TRIG IN signal remains inactive. The
gating signal can be programmed to be either active high or active low.
As long as the proper level is present at the trigger input connector, the
Model 3153 generates output waveforms. When the gate signal is de-
asserted, the output completes the last cycle and resumes position at
a DC level equal to the last point of the waveform.
Gated mode operates on standard waveforms, arbitrary waveforms, and
on sequences of waveforms. Observe the limitations of the gating signal
as listed in the specification section of this manual. To place the Model
3153 in Gated mode, use the following commands:
INIT:CONT OFF
TRIGger:GATE {OFF | ON}
The default state for the Gated mode is OFF. Turning Gated mode ON
automatically turns Burst mode off.
The query:
TRIGger:GATE?
queries the gate state and returns "0" (OFF) or "1" (ON).
Burst Mode
Burst mode is very similar to Triggered mode with the exception that only
one trigger signal is needed to generate a counted number of output
waveforms. In Burst mode, the output remains at a DC level as long as
the TRIG IN signal from the front panel remains inactive. The trigger
input is sensitive to either the rising edge or the falling edge. Each time
a transition at the trigger input occurs, the Model 3153 generates the
number of output cycles that have been programmed in the burst count
parameter. At the end of the burst, the output resumes position at a DC
level equal to the last point of the waveform. The burst count is
programmable from 1 to 1Meg. The default burst value is 1.
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