Trigger System - Tektronix TDS 500D Technical Reference

Trigger System

TDS 500D, TDS 600C, TDS 700D & TDS 714L Performance Verification and Specifications
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Table 2–2: Record length and divisions per record versus TDS model (cont.)
Models with Option 2M
TDS 520D & TDS 724D,
one or two channels
TDS 540D, TDS 580D, TDS 714L,
TDS 754D, TDS 784D & TDS 794D,
three or four channels
TDS 520D & TDS 724D,
one channel only
TDS 540D, TDS 580D, TDS 714L,
TDS 754D, TDS 784D & TDS 794D,
two channels
TDS 540D, TDS 714L, TDS 754D,
TDS 784D & TDS 794D,
one channel only
1
Fit to Screen setting
2
Fit to Screen off preserves 50 samples/division in a 1–2–5 sec/division sequence.
3
Fit to Screen on lets the samples/division and the sec/division sequence vary.
4
All channels means all that may be displayed at one time: four channels for some
models, two for others. See Table 2–1 and its footnote.
5
1M is the standard record length on the TDS 714L.
The triggering system supports a varied set of features for triggering the
signal-acquisition system. Trigger signals recognized include:
H Edge (main- and delayed-trigger systems): This familiar type of triggering is
fully configurable for source, slope, coupling, mode (auto or normal), and
holdoff.
H Logic (main-trigger system): This type of triggering can be based on pattern
(asynchronous) or state (synchronous). In either case, logic triggering is
configurable for sources, for Boolean operators to apply to those sources, for
logic pattern or state on which to trigger, for mode (auto or normal), and for
holdoff. Time qualification may be selected in pattern mode. Another class
of logic trigger, setup/hold, triggers when data in one trigger source changes
state within the setup and hold times that you specify relative to a clock in
another trigger source.
Divisions per record
1 2
Record length FTS Off
2,000,000 40,000 div
4,000,000 80,000 div
8,000,000 160,000 div
Specifications
1 3
FTS On
10 div
10 div
10 div
2–5