Tektronix TDS 420A Service Manual

TDS 420A, TDS 430A & TDS 460A Service Manual
1-7
Nominal Traits
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 1- 3: Nominal Traits — Signal Acquisition System
Name Description
Bandwidth Selections 20 MHz, 100 MHz, and FULL (TDS 420A: 200 MHz, TDS 430A and
TDS 460A: 400 MHz)
Digit izers, Number of TDS 430A: Two, both identical
TDS 420A and TDS 460A: Four, all i dentical
Digit ized Bit s, Number of 8bits
1
Digitized Resolut ion, Hi Res Mode Clock, Internal:
Clock, External:
Resolution
HiRes
≅ 8 ≤ Ꮑ8 + 0.5 Log
2
Ꮛ
timediv
500 ⋅ 10
–9
Ꮠ
Ꮖ≤ 15 bits
Resolution
HiRes
≅ 8 ≤
Ꮑ
8 + 0.5 Log
2
Ꮛ
100, 000, 000
ClockExternalMenu
Ꮠ
Ꮖ
≤ 11.8 bits
Bandwidth, Hi Res Mode Clock, Internal:
Clock, External:
For 1sdiv and slower, BW
HiRes
≅ 0.44 ⋅
Ꮛ
50
timediv
Ꮠ
Hz
BW
HiRes
≅ 44 ⋅
Ꮛ
ClockExternalMenu
100
Ꮠ
Hz
Input Channels, Number of TDS 430A: Two, both identical, called CH 1 and CH 2
TDS 420A and TDS 460A: Four, all i dentical, called CH 1 t hrough CH 4
Input Coupli ng DC, AC, or GND
2
Input Resist ance Selecti ons
1MΩ or 50 Ω
Ranges, Offset, All Channels Volts/Div Setting Offset Range
g
,
,
1 mV/div to 99.5 mV/div ±1V
100 mV/div to 995 mV/div ±10 V
1 V/div to 10 V/div ±100 V
Range, Position ±5 divisions
Range, Sensitivit y
3
1mV/divto10V/div

Tektronix TDS 420A Specifications

General

Brand	Tektronix
Model	TDS 420A
Category	Test Equipment
Language	English