LeCroy Digital Oscilloscopes, Руководство пользователя

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separated by dead periods that would otherwise be unacquirable.
When triggering in this mode, the scope grabs a pre-programmed
number of samples, resets its trigger, and awaits another event. The
resulting waveform is a splicing together of all the waveforms
acquired. This eliminates the information-poor deadtime that would
appear between triggers if the scope triggered on the first event and
then continued to run. Sequence Mode allows acquisition of closely-
spaced trigger events.
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High-speed DSO performance is made possible by the use of
advanced ADCs whose vertical resolution will guarantee a clear
representation of the signal. These ADCs measure the voltage level
at evenly spaced intervals and store the digitized value in high-speed
dedicated memory. The shorter the intervals, the faster the digitizing
rate — and the finer the time structure able to be seen. The higher
the resolution of the ADC, the better is its sensitivity to small voltage
changes. And the greater its memory capacity, the longer the
recording time that will be available.
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Your LeCroy DSO has four channels, as well as an external trigger
channel and a CAL BNC output connector. The CAL BNC can be
used as the source of a calibration signal, an output pulse on the
occurrence of each trigger, or an output pulse signaling a Pass/Fail
condition.
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The power of a DSO in any given application depends on a
combination of several features, and particularly on whether it is able
to trigger on the event of interest. A trigger system far more
sophisticated than that found in conventional oscilloscopes is needed
for capturing rare phenomena such as glitches or spikes, logic
states, missing bits, timing jitter, microprocessor crashes, network
hang-ups or bus contention problems. Your LeCroy scope
incorporates this more sophisticated system.
Unlike manufacturers who put their ‘best’ trigger design into their
more expensive scopes and a less adequate one into the lower-
bandwidth, economy models, LeCroy offers all its DSO users, at
every bandwidth, both a standard edge trigger
and
a powerful
SMART Trigger for capturing elusive events.