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TDS 520A, 524A, 540A, & 544A Performance Verification
Nominal Traits
This subsection contains tables that list the
electrical and mechanical
nominal
traits
that describe the TDS 520A, 524A, 540A and 544A Digitizing
Oscilloscopes.
Nominal traits
are described using simple statements of fact such as “Four, all
identical” for the trait “Input Channels, Number of”, rather than in terms of
limits that are performance requirements.
Table 2-2: Nominal Traits — Signal Acquisition System
Name
Description
Bandwidth Selections 20 MHz, 100 MHz, and FULL (500 MHz)
Digitizers, Number of TDS 540A and 544A: Four, all identical
TDS 520A and 524A: Two, both identical
Digitized Bits, Number of 8 bits
1
Input Channels, Number of TDS 540A and 544A: Four, all identical, called CH1 – CH4
TDS 520A and 524A: Two full-featured (CH1 and CH2), plus two
limited, auxiliary inputs (AUX1 and AUX2)
Input Coupling
2
DC, AC, or GND
Input Impedance Selections
1 M or 50
Ranges, Offset, TDS 540A, 544A, and
CH1 and CH2 on TDS 520A and 524A
Volts/Div Setting
1 mV/div – 99.5 mV/div
100 mV/div – 995 mV/div
1 V/div – 10 V/div
Offset Range
V
V
V
Ranges, Offset, AUX1 and AUX2 on
TDS 520A and 524A
Volts/Div Setting
100 mV/div
1 V/div
10 V/div
Offset Range
V
V
V
Range, Position divisions
Range, Sensitivity TDS 540A and 544A: 1 mV/div to 10 V/div
3
TDS 520A and 524A: CH1 and CH2: 1 mV/div to 10 V/div
3
TDS 520A and 524A: AUX1 and AUX2: 100 mV/div, 1 V/div, 10 V/div
1 Displayed vertically with 25 digitization levels (DLs) per division and 10.24 divisions dynamic range with zoom off. A DL is the small-
est voltage level change that can be resolved by the 8-bit A-D Converter, with the input scaled to the volts/division setting of the
channel used. Expressed as a voltage, a DL is equal to 1/25 of a division times the volts/division setting.
2 The input characteristics (
Input Coupling, Input Impedance Selections, etc.
) apply to both full-featured and auxiliary inputs except
where otherwise specified.
3 The sensitivity ranges from 1 mV/div to 10 V/div in a 1–2–5 sequence of coarse settings. Between a pair of adjacent coarse settings,
the sensitivity can be finely adjusted. The resolution of such a fine adjustment is 1% of the more sensitive of the pair. For example,
between 50 mV/div and 100 mV/div, the volts/division can be set with 0.5 mV resolution.