Tektronix TDS 820, Manual

Page: 93 / 94

Typical Characteristics
Appendix B: Specification
Specification
2Ć20
Table 2-13: Typical Characteristics — Signal Acquisition System
Name Description
Random Noise 300
m
V
RMS
600
m
V
RMS
for the delay line version of the TDS 820
1
Bandwidth is calculated from measured rise time using the following formula:
B d id
Table 2-14: Typical Characteristics — Time Base System
Name Description
View Time, Pretrigger 1.5 ns for the delay line version of the TDS 820
Table 2-15: Typical Characteristics — Triggering System
Name Description
Pulse Width, Minimum Trigger External 0.25 ns
CH 1 and CH 2 0.5 ns for the delay line version of
the TDS 820 only
Table 2-16: Typical Characteristics — Data Handling
Name Description
Retention Time, Nonvolatile Memory
1,2
≥
5 years
1
The time that reference waveforms, stored setups, and calibration constants are retained when there is no power to the oscilloscope.
2
Small lithium-thionyl-chloride batteries internal to the memory ICs maintain the data. The amount of lithium is so small in these ICs
that they can typically be safely disposed of with ordinary garbage in a sanitary landfill.