Digital Storage Oscilloscopes

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Features & Benefits

Be Confident You Are Seeing Actual Signals with up to 400 MHz Bandwidth and ±1.5% Accuracy
Capture Transient Events to the Full Scope Bandwidth with Its 100 MS/s Sample Rate
2 and 4 Channels
Record Lengths to 120 K (Opt. XL)
Floppy Disk Storage
Speed Up Your Circuit Analysis with 25 Built-in Automatic Measurements and Extended Waveform Math/FFT (Opt. XL)
Roll Mode Allows You to See Acquired Data Points Without Waiting for the Acquisition of the Complete Waveform
Use the Video Trigger Mode to See NTSC, PAL, SECAM Signals or Your Own Custom Video Signals
Capture Those Glitches with the 10 ns Peak Detect Mode

Differential Measurements

ADA400A Analog Differential Amplifier (10 μV/div sensitivity)
P5200/P5205/P5210 High Voltage Differential Probes (up to 5600 V) for Floating Measurements
(Please see Differential Preamplifier ADA400A and High Voltage Differential Probes, P5200, P5205, and P5210 for details on ADA400A, P5200, P5205 and P5210)

Applications

Biophysical/Biomedical Research
Electrophysical and Electromechanical System Design
Audio System Measurement and Analysis
Manufacturing Test and Quality Control
Power Supply and Power-related Design
Product Service and Maintenance

TDS400A Digital Storage Oscilloscopes

For professionals who demand high precision and fidelity from their measurements, the TDS400A Digital Storage Scopes combine excellent performance and broad feature set, all at affordable prices. A choice of 2 and 4 channel models ranging from 200 MHz to 400 MHz with a 100 MS/s sample rate on all channels makes the TDS400A Series a worthy fit for a variety of demanding applications.

The highly featured, portable and easy to use TDS420A, 430A and 460A personal lab scopes are ideal for simple to complex applications, including electro-mechanical research and analysis, power electronics/power supply design, bio-physical research and analysis, and digital and analog design. With its standard video trigger capability, the scopes are ideal instruments for measuring video signals including NTSC, PAL and SECAM.

The TDS400A Series uses the renowned TDS Graphical User Interface which offers intuitive icon-based menus along with help text, making scope operation extremely simple. Knobs and buttons allow easy selection of commonly used scope functions. The standard floppy disk drive makes the saving of screen images or data to a disk simple. The disk can then be inserted into your PC for importing to desktop publishing or spreadsheet programs.

Characteristics

TDS400A Theoretically achievable resolution with TDS400A Hi-res mode.

Signal Acquisition System

Bandwidth - 200 MHz (TDS420A), 400 MHz (TDS430A, TDS460A).

Channels - 4 (2 on TDS430A).

Sample Rate - 100 MS/s on all channels.

Sensitivity - 1 mV to 10 V/div (with calibrated fine adjust).

Position Range - ±5 Divisions.

Offset Range - ±1 V from 1 mV/div to 99.5 mV/div; ±10 V from 100 mV/div to 995 mV/div; ±100 V from 1 V/div to 10 V/div.

DC Gain Accuracy - ±1.5%.

Vertical Resolution - 8-Bit (256 levels over 10.24 vertical divisions).

Analog Bandwidth Selections - 20 MHz, 100 MHz and full.

Input Coupling - AC, DC or GND.

Input Impedance Selections - 1 MΩ in parallel with 15 pF or 50 Ω (AC and DC coupling).

Maximum Input Voltage - 300 V CAT II ±400 V_p. Derate at 20 dB/decade above 1 MHz. 1 megaohm or GND coupled.

Channel Isolation - >100:1 at 100 MHz for any two channels.

AC Coupled Low Frequency Limit - ≤10 Hz when AC 1 MΩ coupled. ≤200 kHz when AC 50 Ω coupled.

Acquisition Modes

Peak Detect - High frequency and random glitch capture. Captures glitches of 10 ns using acquisition hardware at all real-time sampling rates.

Sample - Sample data only.

Envelope - Max/min values acquired over one or more acquisitions, selectable from 2 to 2000, infinite.

Average - Waveform averages selectable from 2 to 10,000.

Hi-res - Vertical resolution improvement and noise reduction on low-frequency signals, e.g. 12-Bit at 10 ms/div and slower. Enhanced vertical resolution (>12-Bit) for noise reduction, on low frequency signals. Make precise low-level signal measurements (up to 5 μV) with differential amplifier (ADA400A).

Time Base System

Time Bases - Main, Delayed.

Time/Division Range - 1 ns to 20 s/div.

Time Base Accuracy - 0.015% over any interval ≥1 ms.

Record Length (Real Time and Equivalent Time) - Sample points per channel: 500 to 120,000 points (with Opt. XL).

Pre-trigger Position - Selectable from 0 to 100% of record.

Triggering System

Triggers - Main, Delayed.

Main Trigger Modes - Auto, Normal, Single Sequence.

Delayed Trigger - Delayed by time or events.

Time Delay Range - 0 ns to 20 s.

Events Delay Range - 2 to 10,000,000 events.

External Rear Input - >1.5 kΩ; max input voltage is ±6 V (DC + AC peak).

Video Trigger Types - NTSC, PAL, SECAM and custom; TV field, field 2 or both, any line within a field. Line rates -10 kHz to 64 kHz, interlaced, noninterlaced, composite.

Video Trigger Sensitivity - 0.6 divisions of composite SYNC will achieve a stable display.

Display

Waveform Style - Dots or vectors. Infinite and variable persistence from 250 ms to 10 s.

Gray Scaling - With variable persistence selected, waveform points gradually decay through 16 levels of intensity, providing "z-axis" information about rapidly changing waveforms.

Update Rate - 200 ea. 500 point wfms/s with infinite persistence mode selected.

Graticules - Full, grid, cross hair, frame.

Format - YT and XY.

VGA Out - Drives VGA display monitors.

Zoom

The zoom feature allows waveforms to be expanded, compressed and positioned in both vertical and horizontal axes. Allows precise comparison and study of fine waveform detail without affecting ongoing acquisitions. When used with Hi-res or Average acquisition modes, Zoom provides an effective vertical dynamic range of 1000 divisions or 100 screens.

Measurement System

Automatic waveform measurements
Period	Frequency
High	Low
+ Width	- Width
Maximum	Minimum
Rise	Fall
Peak to Peak	Amplitude
+ Duty cycle	- Duty cycle
+ Overshoot	- Overshoot
Propagation delay	Burst width
Mean	Cycle mean
RMS	Cycle RMS
Area	Cycle area
Phase	-

Continuous update of up to four measurements on any combination of waveforms.

Thresholds - Settable in percentage or voltage.

Gated - Any region of the record may be isolated for measurement using vertical bars.

Snapshot - Performs all measurements on any one waveform showing results from one instant in time.

Cursor Measurements - Absolute, Delta, Volts, Time, Frequency.

Cursor Types - Horizontal bars (volts); vertical bars (time); paired; operated independently or in tracking mode.

Waveform Processing

Waveform Functions - Interpolate-selectable sin(x)/x or linear, Average, Envelope.

Advanced Waveform Functions - FFT, Integration, Differentiation (Opt. XL).

Arithmetic Operators - Add, Subtract, Multiply, Invert.

Autosetup - Single button, automatic setup on selected input signal for vertical, horizontal and trigger systems.

Waveform Limit Testing - Compares incoming waveform to a reference waveform's upper and lower limits.

Computer Interface

GPIB (IEEE 488.2) Programmability - Full talk/listen modes. Control of all modes, settings and measurements.

Hardcopy/Desktop Publishing

Printer - HP ThinkJet, Epson, PostScript, Interleaf, DeskJet, LaserJet, TIFF, PCX, BMP (Microsoft Windows).

Plotter - HPGL.

Interface - GPIB standard.

Hardcopy Interface - Centronics Type and RS-232 (Opt. XL).

Storage

Waveforms - 120,000 waveform points of nonvolatile storage (with Opt. XL).

Floppy Drive - 3.5 in. 1.44 MB or 720 KB MS DOS compatible (store waveforms, screen data, and setups)*¹.

Setups - 10 front-panel setups.

CRT

Type - 7 in. diagonal, magnetic deflection. Horizontal raster-scan. P31 green phosphor.

Resolution - 640 horizontal by 480 vertical displayed pixels.

Power Requirements

Line Voltage Range - 90 to 250 V_RMS.

Line Frequency - 48 to 440 Hz.

Power Consumption - 240 W max.

Environmental and Safety

Temperature - Operating: 0 °C to +50 °C. Nonoperating: -40 °C to +75 °C.

Humidity - Operating and nonoperating: Up to 95% relative humidity at or below +40 °C; to 75% relative humidity from +41 °C to +50 °C.

Altitude - Operating: 15,000 ft., nonoperating: 40,000 ft.

Electromagnetic Compatibility - 89/336/EEC.

Safety - UL3111-1, CSA1010.1, EN61010-1, IEC61010-1.

Physical Characteristics

Dimensions	mm	in.
Weight	kg	lbs.
Height	165	6.4
w/acc. pouch	191	7.5
Width	362	14.25
Depth w/front cover installed	490	19.28
Depth w/handle extended	569	22.4
Net approximately	10.2	22.5
Shipping approximately	14.5	32

*¹ Waveforms can be stored to file in MathCAD and Spreadsheet (Excel®, Lotus 1-2-3®) formats for analysis.

Product(s) complies with IEEE Standard 488.1-1987, RS-232-C, and with Tektronix Standard Codes and Formats.

Product(s) are manufactured in ISO registered facilities.

3GW-10375-4b

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