Tektronix TDS 340A, Technical Reference

Page: 24 / 288

Specifications
TDS 340A, TDS 360 & TDS 380 Technical Reference
1–5
Typical Characteristics
Typical characteristics are described in terms of typical or average performance.
Typical characteristics are not warranted.
Table 1–6: Typical characteristics — signal acquisition system
Name Description
Accuracy, DC Gain, Envelope
Acquisition Mode
±
3% for sec/div settings from 5 Sec/Div to 25 sec/div;
±
2% for sec/div settings from 10 s/div to 5 ns/div (TDS 340A);
±
2% for sec/div settings from 10 s/div to 2.5 ns/div (TDS 360);
±
2% for sec/div settings from 10 s/div to 1 ns/div (TDS 380)
Accuracy, DC Voltage Measurement,
m le Ac isitio o e
Measurement type DC accuracy
Sample Acquisition Mode
Any Sample
±
(2.0%
×
(|reading – Net Offset
1
|) + Offset
Ac 0.13 div + 0.6 mV)
Delta Volts between any two samples
2
acquired under the same setup and
ambient conditions
±
(2.0%
×
|reading| + 0.26 div + 1.2 mV)
Frequency Limit, Upper, 20 MHz Band-
width Limited 20 MHz
Step Response Settling Error Volts/Div
e i g
Step
a pli ude Settling error (%)
3
setting amplitude
100 ns 20 ms
2 mV/div – 99.5 mV/div
≤
2 V
≤
1.0
≤
0.1
100 mV/div – 995 mV/div
≤
20 V
≤
1.5
≤
0.2
1 V/div – 10 V/div
≤
200 V
≤
2.5
≤
0.2
Common Mode Rejection Ratio (CMRR) 100:1 at 60 Hz, reducing to 20:1 at 50 MHz, with equal Volts/Div and Coupling settings
on each channel.
1
Net Offset = Offset – (Position
×
Volts/Div). Net Offset is the voltage level at the center of the A-D converter dynamic
range. Offset Accuracy is the accuracy of this voltage level.
2
The samples must be acquired under the same setup and ambient conditions.
3
The values given are the maximum absolute difference between the value at the end of a specified time interval after the
mid-level crossing of the step, and the value one second after the mid-level crossing of the step, expressed as a
percentage of the step amplitude.