Tektronix TDS 420A Service Manual

Warranted Characteristics
TDS 420A, TDS 430A & TDS 460A Service Manual
1-17
Table 1- 10: Warranted Characteristics — Signal Acquisition Syst em (Cont.)
Name Description
Lower Frequency Limit, AC
Coupled
≤10 Hz when AC--1 MΩ coupled; ≤200 kHz when AC-50 Ω coupled
6
1
Net Offset = Offset - (Position × Volts/Di v). Net Offset is the voltage level at the centerof the A-D converter dynamic
range. Offset Accuracy i s the accuracy of this vol tage level .
2
The sampl es must be acqui red under the same setup and ambi ent condi ti ons.
3
DC Gain Accuracy is confirmed in the Performance Verification Procedure by passing the checks for Offset Accuracy and
DC Voltage Measurement Accuracy (Averaged).
4
Position Accuracy is confirmed in the Performance Verification Procedure by passing the checks for Offset Accuracy and
DC Voltage Measurement Accuracy (Averaged).
5
The limits given are for the ambient temperature range of 0_ Cto+30_ C. Reduce the upper bandwidth frequencies by
2.5 MHz for each _C above +30_ C.
6
The AC Coupled Lower Frequency Limits are reduced by a factor of 10 when 10X, passive probes are used.
Table 1- 11: Warranted Characteristics — Time Base System
Name Description
Accuracy, Long Term Sample Rate and
Delay Time
±150 ppm over any ≥1 ms interval
Accuracy, Absolute Time and Delay Time
Measurements
1,2
For single-shot acquisitions using sample or high-resolution acquisit ion modes and a
bandwidth limit setting of 100 MHz:
±(1 W I + 150 ppm of |Reading| + 450 ps)
For single-shot acquisitions using sample or high-resolution acquisit ion modes and a
bandwidth limit setting of 20 MHz:
±(1 W I + 150 ppm of |Reading| + 1.3 ns)
For repetitive acquisitions using average acquisition mode with ≥8 averages and a
bandwidth limit setting of FULL:
±(1 W I + 150 ppm of |Reading| + 200 ps)
Accuracy, Delta Time
Measurement
1, 2
For single-shot acquisitions using sample or high-resolution acquisit ion modes and a
bandwidth limit setting of 100 MHz:
±(1 W I + 150 ppm of |Reading| + 650 ps)
For repetitive acquisitions using average acquisition mode with ≥8 averages and a
bandwidth limit setting of FULL:
±(1 W I + 150 ppm of |Reading| + 300 ps)
1
For input signal s ≥ 5 divisions in amplitude and a slew rate of ≥ 2.0 di visions/ns at the delta time measurement
points. Si gnal must have been acquired at a volts/divi sion setting ≥ 5 mV/ division and not in Events mode.
2
The WI (waveform interval) is the tim e between the samples in the waveform record. Al so, see the footnotes for
Sample Rate Range and Equi valent Time or Interpolated Waveform Rates in Table 1 - 4 on page 1 - 9.

Tektronix TDS 420A Specifications

General

Brand	Tektronix
Model	TDS 420A
Category	Test Equipment
Language	English