Warranted Characteristics
1-16
TDS 420A, TDS 430A & TDS 460A Service Manual
Table 1- 10: Warranted Characteristics — Signal Acquisition Syst em (Cont.)
Name Description
Analog Bandwidth, DC-50 Ω
Coupled to BNC and Band-
Volts/Div
TDS 420A
Bandwidth
5
TDS 430A and TDS 460A
Bandwidth
5
width Selection is Full
5mV/div--10V/div
DC--200 MHz DC--400 MHz
2mV/div--4.98mV/div DC--150 MHz DC--250 MHz
1mV/div--1.99mV/div DC--95 MHz DC--100 MHz
Cross Talk (Channel Isolation) Volts/Div Isolation
>500 mV/div ≥40:1 at 50 MHz for any two channels having equal volts/division
settings
≤9.95 mV/div ≥40:1 at 50 MHz for any two channels having equal volts/division
settings
10 mV/div--500 mV/div ≥80:1 at 100 MHz and ≥30:1 at full bandwidth for any two
channels having equal volts/division settings
Delay Between Channels, Full
Bandwidth, Equivalent Time
≤200 ps between CH 1 and CH 2 and between CH 3 and CH 4 when both channels have equal
volts/division and coupling settings
≤450 ps for any other combinat ion of two channels with equal volts/division and coupl ing setti ngs
Input Impedance, DC-1 MΩ
Coupled
1MΩ ±0.5% in parallel with 15 pF ±2.0 pF. Matched between channels to within ±1% for resistance
and ±1.0 pF for capacitance
Input Impedance, DC-50 Ω
Coupled
(TDS 420A)
50 Ω ±1% with VSWR ≤1.2:1 from DC--200 MHz
Input Impedance, DC-50 Ω
Coupled
(TDS 430A and TDS 460A)
50 Ω ±1% with VSWR ≤1.6:1 from DC--400 MHz
Input Voltage, Maximum, Volt/Div Rating
DC-1 MΩ,AC-1MΩ,orGND
Coupled
0.1 V/div--10 V/div 300 V CAT II ; derate at 20 dB/decade above 10 MHz until the
minimum rating of ±5 V (DC + peak AC) is reached
1 mV/div--99.9 mV/div 300 V CAT II; derate at 20 dB/decade above 10 kHz until the
minimum rating of ±5 V (DC + peak AC) is reached
Input Voltage, Maximum,
DC-50 Ω or AC-50 Ω Coupled
5V
RMS
, with peaks less than or equal to ±30 V