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TDS640

TektronixDigital

The Tektronix TDS640 is a high-performance 4-channel digitizing oscilloscope designed for precision high-speed electronic design and test applications. Offering a 500 MHz analog bandwidth alongside real-time sampling rates of up to 2 GS/s simultaneously across all channels, it provides clean, high-fidelity capture of transient events and fast rise times.

Signal AnalysisSignal IntegrityTransient Analysis

Specifications

General

ParameterValue
InterfacesGPIB (IEEE-488.2) standard; RS-232 and Centronics (optional)
Display7-inch monochrome CRT
Warm-up Time20 minutes

Physical

ParameterValue
Power Supply90 to 250 V RMS, 45 Hz to 440 Hz, <300 W
Operating Temperature0 to +50 °C
Dimensions (W×H×D)445 mm × 193 mm × 434 mm

Vertical System

ParameterValue
Analog Bandwidth (-3 dB)500 MHz
Calculated Rise Time (10% to 90%)≤ 700 ps
Number of Input Channels4
Vertical Resolution (ADC)8 bits (256 levels over 10.24 vertical divisions)
Input Impedance50 ̩
Input CouplingDC or GND
Input Sensitivity Range1 mV/div to 10 V/div
Hardware Bandwidth Limits20 MHz, 100 MHz, and Full (500 MHz)
Maximum Input Voltage (50 Ω)5 V RMS
DC Gain Accuracy±1.5%
Channel Isolation>100:1 at 100 MHz, >30:1 at 500 MHz
Offset Range±1 V (1 mV to 99.5 mV/div), ±10 V (100 mV to 995 mV/div), ±24 V (1 V to 10 V/div)
Position Range±5 divisions

Horizontal System

ParameterValue
Maximum Real-Time Sampling Rate2 GS/s (on 4 channels simultaneously)
Maximum Record Length (Points per Channel)2000 points
Time Base Range500 ps/div to 5 s/div
Time BasesMain, Delayed
Timebase Accuracy±100 ppm (±0.01%)

Trigger System

ParameterValue
Trigger SourcesCH1, CH2, CH3, CH4, AC Line
Trigger ModesAuto, Normal, Single
Edge TriggeringSupported
Pulse Width TriggeringSupported (including glitch and runt detection)
Trigger Sensitivity (Edge, DC Coupled)0.35 div from DC to 50 MHz, 1.0 div at 500 MHz

Acquisition System

ParameterValue
Acquisition ModesSample, Envelope, Average

Waveform Measurements and Analysis

ParameterValue
Automatic Voltage and Time MeasurementsSupported (up to 25 automated parameters)

Connectivity and Ports

ParameterValue
GPIB (IEEE-488) InterfaceStandard

Power Specifications

ParameterValue
Power Supply Voltage Range90 to 250 V RMS
Power Supply Frequency Range45 Hz to 440 Hz
Power Consumption300 W maximum

Environmental Specifications

ParameterValue
Storage Temperature Range-40 °C to +75 °C
Operating AltitudeUp to 4,500 m (15,000 ft)

Physical Characteristics

ParameterValue
Height193 mm (7.6 in) with feet
Width445 mm (17.5 in) with handle
Depth472 mm (18.6 in) with handle

Display

ParameterValue
Display Resolution640 × 480 pixels

Waveform Processing

ParameterValue
Standard Math FunctionsAddition, subtraction, multiplication, inversion
Advanced Math FunctionsFFT, integration, differentiation (with Option 2F)

Storage & Connectivity

ParameterValue
VGA OutputStandard, 15-pin D-sub
Floppy Disk Drive3.5-inch 1.44 MB (with Option 1F)
RS-232 and Centronics PortsAvailable with Option 13

Environmental & Reliability

ParameterValue
Operating HumidityUp to 95% RH at or below +40 °C, up to 75% RH from +41 °C to +50 °C

Maintenance

ParameterValue
Calibration Interval1 year

Accessories

ParameterValue
Standard ProbesP6139A (four included)

Storage

ParameterValue
Setup Storage10 setups
Waveform Storage4 waveforms

Environmental

ParameterValue
Vibration (Operating)0.31 g RMS, 5 Hz to 500 Hz
Shock (Non-operating)50 g, half-sine, 11 ms duration

Compliance

ParameterValue
Safety StandardsUL 1244, CSA C22.2 No. 231, EN 61010-1

Technology

Digital Storage Oscilloscope (DSO)

Applications

High-speed electronic circuit design, troubleshooting, and testing

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