TDS 520A, 524A, 540A, & 544A Service Manual
1Ć9
Nominal Traits
This subsection contains tables that list the electrical and mechanical 
 that describe the TDS 520A, 524A, 540A, & 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.
TableĂ1Ć2:ăNominal Traits Ċ 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 fullĆfeatured (CH1 and CH2), plus two limĆ
ited, auxiliary inputs (AUX1 and AUX2)
Input Coupling
2
DC, AC, or GND
Input Impedance Selections
1MW or 50 W
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
±1 V
±10 V
±100 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
±0.5 V
±5.0 V
±50 V
Range, Position ±5 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
smallest voltage level change that can be resolved by the 8Ćbit AĆD 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 fullĆfeatured and auxiliary inputs except
where otherwise specified.
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