Specifications
Table 1-2: Time base system (cont.)
Characteristic
Description
(Sin x)/x interpolationWaveform Interpolation
Waveform interpolation is activated for sweep speeds of 100 ns/div and faster.
This is the total number of samples contained in a single acquired waveform record (Memory Length in
IEEE 1057.2.2.1).
Record Length
2,500 samples per record.
5 ns/div to 50 s/div in 1–2.5–5 sequenceSeconds/Division Range
Sec/Div Variable function is not available for this product.
This is the maximum, total, long-term error in sample-rate or horizontal position time accuracy, expressed
in parts per million.
√ Long-Term Sample
Rate and Horizontal
Position Time Accuracy
±50 ppm over any ≥1 ms interval.
Horizontal scale setting Horizontal position time range
5ns/divto10ns/div
25 ns/div to 100 μs/div
250 μs/divto10s/div
25 s/div to 50 s/div
–4 div * s/div to 20 m s
–4 div * s/div to 50 m s
–4 div * s/div to 5 0 s
–4 div * s/div to 250 s
Horizontal Position Time
Range
The user c ontrols the time from the trigger to the center graticule on the display with the Horizontal
Position knob.
The resolution of the Horizontal Position time is 1/25 of a horizontal division.
Horizontal Window
Display
The Window Zone enables a user to select a part of the display to be m agnified. The user controls the
location with the H orizontal Position knob and the w id th with the Sec/Div knob. Vertical cursors show the
selected zone. To magnify the zone, the user selects the window from the menu.
This is the a ccuracy of delta time measurements made on any single waveform.
The limits are given in the following table for signals having an amplitude ≥ 5 divisions, a slew rate at the
measurement points of ≥ 2.0 divisions/ns, and acquired ≥ 10 mV/div.
Condition
Time Measurement Accuracy
Single shot, sample mode,
full bandwidth selected
±(1 Sample Internal + 100 ppm * |reading| + 0.6 ns)
> 16 averages,
full bandwidth selected
±(1 Sample Internal + 100 ppm * |reading| + 0.4 ns)
Delta Time Measurement
Accuracy
The Sample Interval is the time between the samples in the waveform record.
Time Measurement
Functions
Frequency, Period, Rise Time, Fall Time, Positive W id th, negative Width, Positive D uty Cycle, Phase,
Delay
TBS1000 Series Oscilloscope Service Manual 1–7