Table 2- 3: Nominal Traits - Time Base System; Table 2- 4: Nominal Traits - Triggering System - Tektronix TDS 430A Technical Reference

Table 2- 3: Nominal Traits — Time Base System
Name
1,3
Range, Sample-Rate
Range, Equivalent Time or Interpolated
2,3
Waveform Rate
Range, Seconds/Division
Range, Time Base Delay Time
Reference Frequency, Time Base
Record Length Selection
Sampling Edge, External Clock
Hi Res Averaging Period, External Clock Hi Res averaging done over period 1/(maximum external clock rate
1
The range of real-time rates, expressed in samples/second, at which a digitizer samples signals at its inputs and
stores the samples in memory to produce a record of time-sequential samples.
2
The range of waveform rates for equivalent time or interpolated waveform records.
3
The Waveform Rate (WR) is the equivalent sample rate of a waveform record. For a waveform record acquired by
real-time sampling of a single acquisition, the waveform rate is the same as the real-time sample rate; for a
waveform created by interpolation of real-time samples from a single acquisition or by equivalent-time sampling of
multiple acquisitions, the waveform rate is faster than the real time sample rate. For all three cases, the waveform
rate is 1/(Waveform Interval) for the waveform record, where the waveform interval (WI) is the time between the
samples in the waveform record.
4
In Hi Res, the maximum Option 1M record length is 60,000 points.
5
You set the maximum external clock rate using the Horizontal Clock menu. The Hi Res samples are averaged over a
10 to 40 ns shorter period than shown by the readout.
Table 2- 4: Nominal Traits — Triggering System
Name
Range, Events Delay
Ranges, Trigger Level or Threshold g , gg
TDS 420A, TDS 430A & TDS 460A Performance Verification and Specifications
Description
2.5 Samples/s to 100 MSamples/s
200 MSamples/s to 50 GSamples/s
1 ns/div to 20 s/div
0 to 20 seconds
100 MHz
500, 1,000, 2,500, 5,000, 15,000, and 30,000 points. Record lengths of 60,000 and
120,000 points are available with Option 1M
Negative edge, with TTL threshold and tolerances
to 2 s. An external clock edge before this period ends produces an invalid sample.
Description
1 to 9,999,999
Source
Any Channel
Line
Nominal Traits
4
5
), but within <100 ns
Range
±12 divisions from center of screen
±400 Volts
2- 5