Tektronix TDS784A 1GHz Digital Oscilloscope

• 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
• Direct Readout in "Amperes" and "Watts" using P5200 and TCP202 Probes
• Channel Deskew
• HP Deskjet printer support

Specifications

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

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.

CH1, CH2: 1 mV to 10 V/div

CH3, CH4: 1 mV to 10 V/div

Position Range: +/-5 Divisions.

CH1, CH2:
+/-1 V from 1 mV to 100 mV/div (TDS 784A/782A)
+/-1 V from 1 to 99.5 mV/div (TDS 754A/744A/724A)

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

Any One Channel:
1 GS/s (TDS 724A)
2 GS/s (TDS 782A/754A/744A)
4 GS/s (TDS 784A)

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)

Any One Channel:
50K (250K opt.) (TDS 782A/724A)
50K (500K opt.) (TDS 784A/754A/744A)

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 Bases: Main, Delayed.

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.

DC Gain Accuracy: +/-1.0% (Warranted); +/-0.7% (Typical).

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.

InstaVu^TM: Instantaneous capture of random anomalies and changing signals. Captures up to a maximum of 400,000 waveforms per second (TDS 784A/754A/744A). Uses color grading to show relative occurrence of events.

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.

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.

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.

VIDEO (Optional) NTSC, PAL, HDTV, FlexFormat^TM: 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 FlexFormat^TM for other HDTV-type formats by defining frame rep rate, number of lines and fields, and sync timing structure.

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).

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: 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.

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.

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

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.

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

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

Plotter: HPGL.

Data: MathCAD, Spreadsheet formats.

Interface: GPIB standard.

Hardcopy Interface: Centronics and RS-232.

Waveforms:
4 full 50K (with Option 1M: 2 full 130K point, 1 full 250K point, or 1 compressed 500K point waveform) (TDS 784A/754A/744A)
2 full 50K (with Option 1M: 2 full 130K point, 1 full 250K point waveform) (TDS 782A/724A)

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.

Type: 7 in. diagonal, NuColor^TM liquid crystal full color shutter display. 256 color levels.

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

Line Voltage Range: 90 to 250 V RMS.

Line Frequency: 45 to 440 Hz.

Power Consumption: 300 Watts max.

Temperature:
Operating: +4 to +50 degree C (floppy not used).
+10 to +50 degree C (floppy in use).
+4 to +45 degree C (floppy not used) (TDS 784A)
+10 to +45 degree C (floppy in use) (TDS 784A)
Nonoperating: -22 to +60 degree C.

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.

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. 25.4 kg (56 lb.)