Digital Real-Time Oscilloscopes

TDS 600B Series: TDS 620B, TDS 644B, TDS 680B, TDS 684B

Features

Tektronix Measurement products are manufactured in ISO registered facilities.

The TDS Series complies with IEEE Standard 488.2-1987, and with Tektronix Standard Codes and Formats.

For additional information or to order, contact your local Tektronix representative.

Characteristics

Channels:
4 (TDS 644B/684B)
2+2 auxiliary (TDS 620B/680B)

Samplers:
2 (TDS 620B/680B)
4 (TDS 644B/684B)

Bandwidth*:
1 GHz ** (TDS 680B/684B)
500 MHz*** (TDS 620B/644B)

* Reduce the upper bandwidth frequencies by 5 MHz for each degree C above 30 degree C.
** 50 ohm; 1 mV/div: 500 MHz, 2 mV/div: 600 MHz, 5 mV/div: 750 MHz, 10 mV/div: 1 GHz.
*** 1 mV/div: 250 MHz, 2 mV/div: 300 MHz, 5 mV/div: 450 MHz, 10 mV/div: 550 MHz.

Sensitivity

CH1, CH2: 1 mV to 10 V/div

CH3, CH4: 1 mV to 10 V/div (TDS 644B/684B)

AUX 1, AUX 2: 1 mV to 10 V/div (TDS 620B/680B)

Position Range: +/-5 Divisions.

Offset

CH1, CH2 CH3 (AUX1), CH4 (AUX2):
+/-1 V from 1 mV to 100 mV/div
+/-10 V from 101 mV to 1 V/div
+/-140 V from 1.01 V to 10 V/div

Maximum Sample Rate

Any One Channel:
2.5 GS/s (TDS 620B/644B)
5 GS/s (TDS 680B/684B)

Any Two Channels:
2.5 GS/s (TDS 620B/644B)
5 GS/s (TDS 680B/684B)

Three, Four Channels:
2.5 GS/s (TDS 644B)
5 GS/s (TDS 684B)

Maximum Record Length

Any One Channel: 15K pts

Any Two Channels: 15K pts

Any Three, Four Channels: 15K pts (TDS 644B/684B)

Time Base System

Time Bases: Main, Delayed.

Time Base Range: 200 ps to 10 s/div.

Time Base Accuracy: +/-100 ppm (over any interval >/=1 ms)

Pre-Trigger Position: 0% to 100% of any record

Delay Between Channels: </=100 ps (any 2 channels with equal V/div and coupling)

Vertical System

DC Gain Accuracy:
+/-1.5% for sensitivities from 2 mV/div to 10 V/div
+/-2.0% at 1 mV/div

Vertical Resolution: 8 bits (256 levels over 10.24 vertical divisions). >11 bits with averaging.

Analog Bandwidth Selections:
20 MHz, 100 MHz, and full (TDS 620A/644A)
20 MHz, 250 MHz, and full (TDS 684A)

Step Response Settling: </=0.5% error within 20 ns of a </=2 V step.

Effective Bits:
6.3 Bits (5 GS/s) (TDS680B/684B)
6.3 Bits (2.5 GS/s) (TDS 620B/644B)

Input Coupling: AC, DC or GND.

Input Impedance Selections: 1 Megohm in parallel with 10 pF, or 50 ohm (AC and DC coupling).

Maximum Input Voltage: +/-400 V (DC+ peak AC). Derate at 20 dB/decade above 1 MHz. 1 Megohm or GND coupled.

Channel Isolation: >/=100:1 at 100 MHz and >/=30:1 at bandwidth for any two channels having equal Volts/div settings.

AC Coupled Low Frequency Limit: </=10 Hz when AC 1 Megohm coupled. </=200 kHz when AC 50 ohm coupled.

Acquisition Modes

Sample: Sample data only.

Peak Detect: High frequency and random glitch capture. Captures glitches of 1 ns (TDS 620B/644B); <1 ns (TDS 680B/684B).

Envelope: Max/min values acquired over one or more acquisitions.

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

Single Sequence: Use Run/Stop button to capture a single triggered acquisition at a time which may be automatically saved to NVRAM with AutoSave.

Trigger Types

EDGE (main and delayed): Conventional level driven trigger. Positive or negative slope on any channel or rear panel auxiliary input. Coupling Selections: DC, AC, noise reject, HF reject, LF reject.

PULSE (main):

WIDTH: Trigger on width of positive or negative pulse either within or not within selectable time limits. Time limits settable from 1 ns to 1 s.
GLITCH: Trigger on or reject glitches of positive, negative or either polarity. Minimum glitch width threshold is 1.0 ns, with 200 ps resolution.
RUNT: Trigger on a pulse that crosses one threshold but fails to cross a second threshold before crossing the first again.
SLEW RATE: Trigger on pulse edge rates that are either faster or slower than a set rate. Edges can be rising, falling, or either.
TIMEOUT: Trigger on an event which remains high, low, or either, for a user-specified time. Time range is settable from 1 ns to 1 s, with 200 ps resolution.
PATTERN: Specifies a logical combination (AND, OR, NAND, NOR) of the four input channels (Hi, Lo, Don't Care). Trigger when pattern stays True or False for user specified time.
STATE: Any logical pattern of channels 1, 2 and 3 (AUX1 on TDS 620A) plus clock edge on channel 4 (AUX2 on TDS 620A). Triggerable on positive or negative clock edge.
SETUP & HOLD: Trigger on violations of both setup time and hold time between clock and data which are on separate input channels.
Video (Optional) NTSC, PAL, HDTV, FlexFormatTM: Trigger on a particular line of individual, odd/even, or all fields. Trigger on a specific pixel of a line by using video trigger with delay by events. Choose horizontal sync polarity. Choose from popular HDTV formats (1125/60, 1050/60 1250/50, 787.5/60) or use FlexFormatTM for other HDTV-type formats by defining frame rep rate, number of lines and fields, and sync timing structure.

Triggering System

Triggers: Main, Delayed.

Main Trigger Modes: Auto, Normal, Single.

Delayed Trigger: Delayed by time, events, or events and time.

Time Delay Range: 16 ns to 250 s.

Events Delay Range: 1 to 9,999,999 events.

External Rear Input: >/=1.5 kilohm; Max input voltage is +/-20 V (DC + AC peak).

Display

Waveform Style: Dots, vectors, variable persistence selectable from 250 ms to 10 s, infinite persistence, and intensified samples.

Color: Standard palettes and user definable colors for waveforms, text, graticules, and cursors. Measurement text and cursor colors matched to waveform. Waveform collision areas highlighted with different color. Statistical waveform distribution shown with color grading through variable persistence.

Color Grading: (TDS 644B/684B only) With variable persistence selected, historical timing information is represented by temperature or spectral color scheme providing "z-axis" information about rapidly changing waveforms.

Gray Scaling: With variable persistence selected, waveform points time-decay through 16 levels of intensity.

Waveform Capture Rate: For 500 point waveforms with infinite persistence mode selected: 100/sec typically.

Graticules: Full, grid, cross hair, frame. NTSC and PAL with video trigger option.

Format: YT and XY.

Fit to Screen: Entire acquisition memory displayed on screen.

Zoom

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

Dual Window Zoom: Dual graticules simultaneously show selected and zoomed waveforms. Up to two zoom boxes show areas on the selected trace that are being magnified, and the two magnified areas can be overlapped for quick comparison. Color of zoomed trace matches selected trace.

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. NTSC IRE and Line Number with video trigger option.

Time Measurements Accuracy: (Single Shot Typical)
<50 ps typical (TDS 680B/684B)
<110 ps @ 2.5 GS/s (TDS 620B/644B)

Cursor Types: Horizontal bars (volts); Vertical bars (time); operated independently or in tracking mode.

Waveform Processing

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

Advanced Waveform Functions: (Standard on TDS 644B/684B) FFT, Integration, Differentiation.

Arithmetic Operators: Add, Subtract, Multiply, Divide, Invert.

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

Waveform Limit Testing: Compares incoming or math 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

Printer: HPThinkjet, Epson, Interleaf, Deskjet, Deskjet Color, Laserjet, PostScript, TIFF, PCX, BMP (Microsoft Windows), DPU 411/412, RLE.

Plotter: HPGL.

Interface: GPIB standard.

Hardcopy Interface: (Standard on TDS 644B/684B) Centronics and RS-232.

Storage

Waveforms: Four 15 K point records.

Setups: 10 front panel setups.

Floppy Drive: (Standard on TDS 644B/684B) Store reference waveforms, setups, and image files on 3.5 inch 1.44 MByte or 720 KByte DOS format floppy disk.

CRT

Type: (TDS 620B/680B) 7 in. diagonal, magnetic deflection. Horizontal raster-scan. P4 White phosphor.

Type: (TDS 644B/684B) 7 in. diagonal, NuColorTM liquid crystal full color shutter display. 256 color levels.

Resolution: 640 horizontal by 480 vertical displayed pixels (VGA).

Power Requirements

Line Voltage Range: 90 to 250 V RMS.

Line Frequency: 45 to 440 Hz.

Power Consumption: 300 Watts max.

Environmental And Safety

Temperature:
Operating: +4 to +45 degree C (floppy not used)
+10 to +45 degree C (floppy in use)
Nonoperating: -22 to +60 degree C.

Humidity:
Operating (floppy not used): 20% to 80% RH at </=32 degree C. Upper limit derates to 30% RH at +45 degree C.
Operating (floppy in use): 20% to 80% RH at </=32 degree C. Upper limit derates to 30% RH at +45 degree C.
Nonoperating: 5% to 90% RH at </=41 degree C. Upper limit derates to 30% RH at +60 degree C.

Altitude:
Operating: 15,000 ft.
Nonoperating: 40,000 ft.

Electromagnetic Compatibility: Meets or exceeds Vfg. 243/1991 amended per Vfg. 46/1992; FCC 47 CFR, Part 15, Subpart B, Class A; EN 50081-1; and EN 50082-1.

Safety: Listed UL 1244; CSA - C22 No. 23; Tektronix self-certification to comply with IEC 348 recommendations.

Physical Characteristics

Dimensions:
Height (with feet): 193 mm (7.6 in.)
Height (without feet): 178 mm (7.0 in.)
Width (with handle): 445 mm (17.5 in.)
Depth (with front cover installed): 434 mm (17.1 in)
Net Weight: approx. 14.1 kg (31 lb.)
Shipping Weight: approx. 24.0 kg (53 lb.)

Ordering Information

TDS 620B Digital Real-Time Oscilloscope
Includes: Two P6243 Active Probes, Reference Manual (070-9382-00), User Manual (070-9383-00), Technical Reference Manual (070-9384-00), Programmer Manual (070-9385-00), Front cover (200-3696-01), US Power Supply (161-0230-01).

TDS 644B Digital Real-Time Oscilloscope
Includes: Four P6243 Active Probes, Reference Manual (070-9382-00), User Manual (070-9383-00), Technical Reference Manual (070-9384-00), Programmer Manual (070-9385-00), Front cover (200-3696-01), US Power Supply (161-0230-01), Accessory Pouch (016-1268-00).

TDS 680B Digitizing Oscilloscope
Includes: Reference Manual (070-9382-00), User Manual (070-9383-00), Technical Reference Manual (070-9384-00), Programmer Manual (070-9385-00), Front cover (200-3696-01), US Power Supply (161-0230-01).

TDS 684B Digitizing Oscilloscope
Includes: Reference Manual (070-9382-00), User Manual (070-9383-00), Technical Reference Manual (070-9384-00), Programmer Manual (070-9385-00), Front cover (200-3696-01), US Power Supply (161-0230-01), Accessory Pouch (016-1268-00).

Opt. 05: Add Video Trigger; NTSC, PAL, HDTV, FlexFormatTM.

Opt. 1F: (TDS 620B/680B only) Add 3.5 inch floppy disk drive.

Opt. 1K: K420 scope cart without power strip.

Opt. 1R: Rack Mount.

Opt. 2D: (TDS 620B only) Delete 2 ea standard probes.

Opt. 2F: (TDS 620B/680B only) Extended waveform math; FFT, Integration, Differentiation.

Opt. 3I: Tektronix PhaserTM 140 Color Printer (International)

Opt. 3P: Tektronix PhaserTM 140 Color Printer

Opt. 4D: (TDS 644B only) Delete 4 ea standard probes.

Opt. 13: (TDS 620B/680B only) Add RS 232C and Centronics hardcopy interfaces.

Opt. 24: Add 4 ea P6139A probes.

Opt. 26: (TDS 684B only) Add 4 ea. P6245 1.5 GHz active probes.

Opt. 27: (TDS 680B only) Add 2 ea. P6245 1.5 GHz active probes.

Opt. 95: NIST, MIL-STD-45662A and ISO 9000 calibration certification.

Opt. 96: Calibration data.

Opt. R2: Two years of post-warranty repair protection.

Opt. C5: Five years of calibration service.

International Power Options

Opt. A1: Universal Euro. 220 V, 50 Hz

Opt. A2: UK 240 V, 50 Hz

Opt. A3: Australian 240 V, 50 Hz

Opt. A4: North American 240 V, 60 Hz

Opt. A5: Switzerland 220 V, 50 Hz

*International power options required on instruments and selected accessories for operation outside U.S.

Probes

FET Probe: 1 GHz. Order P6204

500 MHz Passive Probe: Order P6139A

750 MHz FET Probe: Order P6205

1 GHz FET Probe: OrderP6243

1.5 GHz FET Probe: Order P6245

4 SMD Probes: Order P6563AS

Optical Converter: 500 nm to 950 nm. Order P6711

Optical Converter: 1100 nm to 1700 nm. Order P6713

High Voltage Probe: Order P5100

DC/AC Current Probe System: Order AM503S

10 mV Differential Probe: Order ADA400A

Recommended Accessories

TDS 600A Service Manual: Order 070-8718-02

Accessory Pouch: Order 016-1268-00

Soft-sided Carrying Case: Order 016-0909-01

Transit Case: Order 016-1135-00

Four Color Plotter: Order HC100

Software

LabView for PC Windows System: Order LVWIN

WaveWriter: AWG and waveform creation. Order S3FT400

Labwindows for DOS System: Order LWDOS

Labwindows for CVI System: Order LWCVI

Cables

RS232: Order 012-1298-00

Centronics: Order 012-1250-00

GPIB: 1 M. Order 012-0991-01

GPIB: 2 M. Order 012-0991-00

InstaVu, TriStar, FastFrame, Phaser, and FlexFormat are trademarks and Tektronix is a registered trademark of Tektronix, Inc.

Copyright (c) Tektronix, Inc.