TDS 784A

Features

• InstaVu^TM Acquisition (up to 400,000 wfms/sec)
• 500 MHz bandwidth (TDS 754A/744A/724A);
  1 GHz (TDS 784A/782A)
• Sample rates to 2 GS/s (TDS 782A/754A/744A);
  1 GS/s (TDS 724A)
  4 GS/s (TDS 784A)
• 2 input channels (TDS 782A/724A);
  4 input channels (TDS 784A/754A/744A)
• Pulse width, 1 ns glitch; runt, pattern, state, triggering
• 1 mV/div -10 V/div sensitivity
• Infinite and variable persistence
• Color Grading
• Record lengths to 500,000 points (250,000 points on TDS 782A/724A)
• 8-bit vertical resolution and up to 13 bits with HiRes
• High resolution color monitor
• 3.5 inch DOS floppy disk drive (standard)
• Vertical accuracy to 1%
• Tek TriStar^TM (DSP) processor
• Slew Rate, Setup & Hold Violation, and Time-out triggers
• Waveform pass/fail testing
• Advanced signal processing functions
• 25 automatic measurements
• Full GPIB programmability
• Desktop publishing outputs
• HDTV Video trigger option
• Segmentable acquisition memory
• VGA output
• 3 year warranty
• Direct Readout in "Amperes" and "Watts" using P5200 and TCP202 Probes
• Channel Deskew
• HP Deskjet printer support

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

Characteristics

Samplers: 4 (2 Channels for TDS 782A/724A)

Bandwidth*:
1 GHz ** (TDS 784A/782A)
500 MHz*** (TDS 754A/744A)
500 MHz (TDS 724A)

* Reduce the upper bandwidth frequencies by 2.5 MHz for each degree C above 30 degree C.

** 50 ohm; 1 mV/div: 500 MHz, 2 mV/div: 600 MHz, 5 mV/div: 900 MHz. Reduce the upperbandwidth frequencies by 5 MHz for each degree C above 30 degree C.

*** 1 mV/div: 450 MHz.

Sensitivity

CH3, CH4: 1 mV to 10 V/div

Position Range: +/-5 Divisions.

Offset

AUX 1, AUX 2:
+/-10 V from 101 mV to 1 V/div, +/-100 V from 1.01 V to 10 V/div

CH3, CH4:
+/-1 V from 1 to 99.5 mV/div

Maximum Sample Rate

Any Two Channels:
500 MS/s (TDS 724A)
1 GS/s (TDS 744A)
2 GS/s (TDS 784A/754A)

Four Channels:
500 MS/s (TDS 744A)
1 GS/s (TDS 784A/754A)

Three, Four Channels:
500 MS/s (TDS 744A)
1 GS/s (TDS 784A/754A)

Maximum Record Length

Any Two Channels:
130K (TDS 724A)
50K (250K opt.) (TDS 754A/744A)
50K pts (250K w/Opt. 1M) (TDS 784A/782A)

Any Four Channels:
50K (130K opt.) (TDS 784A/754A/744A)

Any Three, Four Channels:
50K pts (130K w/Opt. 1M) (TDS 784A/754A/744A)

Time Base System

Time Base Range: 500 ps to 10 s/div. (10,000 s/div with fit-to-screen for TDS 754A/744A/724A)
200 ps to 10 s/div. 4 ps (to 2500 s/div with fit-to-screen or zoom TDS 784A/782A)

Time Base Accuracy (over any interval >/=1 ms): +/-25 ppm.

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

Delay Between Channels (any 2 channels with equal V/div and coupling): </=50 ps.

Vertical System

Vertical Resolution: 8 bits (256 levels over 10.24 vertical divisions). >/=13 bits with HiRes; >/=11 bits with averaging.

Analog Bandwidth Selections: 20 MHz, 250 MHz, and full.

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

Effective Bits:
5.5 Bits (1 GHz at 4 GS/s) (TDS 784A/782A)
6.8 Bits (500 MHz at 2 GS/s) HiRes. 9.7 Bits (1 MHz at 10 MS/s). (TDS 754A/744A/724A)
9.7 Bits with HiRes (1 MHz at 10 MS/s (TDS 784A/782A)

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

Peak Detect: High frequency and random glitch capture. Captures glitches of 1 ns using acquisition hardware at all real-time sampling rates.

Sample: Sample data only.

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

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

HiRes: Vertical resolution improvement and noise reduction on low-frequency signals, e.g. 13 bits at 50 microsecond/div and slower.

FastFrame^TM: Acquisition memory size segmentable with trigger rate up to 50,000 per second from 50 to 5,000 points per frame (independent of the number of channels).

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

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.

TIME-OUT: Trigger on an event which remains high, low, or either, for a user-specified time.

LOGIC:

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 plus clock edge on channel 4. 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.

Triggering System

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

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: 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: 150/sec typically. With InstaVu: up to 400,000/sec (TDS 784A/754A/744A).

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

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

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)
<38 ps typical @ 4 GS/s Single Shot (TDS 784A)
<80 ps @ 2 GS/s Single Shot (TDS 782A/754A/744A)
<150 ps @ 1 GS/s Single Shot (TDS 724A)

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

Waveform Processing

Advanced Waveform Functions: 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

Hardcopy

Plotter: HPGL.

Data: MathCAD, Spreadsheet formats.

Interface: GPIB standard.

Hardcopy Interface: Centronics and RS-232.

Storage

Setups: 10 front panel setups.

Floppy Drive: Store reference waveforms, setups, (and data files w/TDS 784A) and image files on 3.5 inch 1.44 MByte or 720 KByte DOS format floppy disk.

CRT

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

Power Requirements

Line Frequency: 45 to 440 Hz.

Power Consumption: 300 Watts max.

Environmental And Safety

Humidity:
Operating (floppy not used): To 80% RH at </=32 degree C. Derates to 30% RH at +45 degree C.
Operating (floppy in use): To 80% RH at </=32 degree C. Derates to 30% RH at +45 degree C.
Nonoperating: To 90% RH at 3 405C. 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

Ordering Information

TDS 754A/TDS 744A Digitizing Oscilloscopes
Each Include: Four each P6139A, Reference Manual (070-9382-01), User Manual (070-9719-00), Technical Reference Manual (070-9720-00), Programmer Manual (070-9556-00), Front cover (200-3696-01), US Power Supply (161-0230-01), Accessory Pouch (016-1268-00).

TDS 724A Digitizing Oscilloscope
Includes: Two each P6139A, Reference Manual (070-9382-01), User Manual (070-9719-00), Technical Reference Manual (070-9720-00), Programmer Manual (070-9556-00), Front cover (200-3696-01), US Power Supply (161-0230-01), Accessory Pouch (016-1268-00).

Opt. 05: Add Video Trigger; NTSC, PAL, HDTV, FlexFormat^TM.

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

Opt. 1M: 500K Memory Length on 1 channel; (250K for TDS 782A/724A)

Opt. 1R: Rack Mount.

Opt. 3P: Tektronix Phaser 140 Color Inkjet printer and cable (110 V).

Opt. 3I: Tektronix Phaser 140 Color Inkjet printer and cable (220 V).

Opt. 20: TCP202 Current Probe and Calibrator.

Opt. 21: TCP202 and P5205 High Voltage Probe.

Opt. 23: Add 2 ea. P6243 Active Probes (TDS 754A/744A/724A)

Opt. 24: (TDS 784A only) Add 4 ea P6139A probes.

Opt. 26: (TDS 784A only) Add 4 ea. P6245 1.5 GHz active probes.

Opt. 27: (TDS 782A only) Add 2 ea. P6245 1.5 GHz active probes.

Opt. 28: ADA 400A Differential Pre-Amplifier.

Opt. 95: Calibration data.

Opt. 96: NIST, MIL-STD-45662A and ISO 9000 calibration certification.

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

Opt. C5: Five years of calibration service.

International Power Options

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 User Manual Options

Opt. L3: German User Manual.

Opt. L5: Japanese User Manual.

Opt. L9: Korean User Manual.

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

Probes

500 MHz Passive Probe: Order P6139A

750 MHz FET Probe: Order P6205

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 microvolt Differential Probe: Order ADA400A

Recommended Accessories

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

WaveWriter: AWG and waveform creation. Order S3FT400

Labwindows for DOS System: Order LWDOS

Labwindows for CVI System: Order LWCVI

Cables

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.