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TDS 820
Features
Specs
Ordering Information
Digital Sampling Oscilloscopes
TDS 820
This product is discontinued.
Characteristics
SIGNAL
Acquisition
System
TDS 820 TDS 820 Opt. 1D
Channels 2 2
Rise time 58.3 ps 43.8 ps
Bandwidth
(0.35/rise time)
6 GHz 8 GHz
Max operating
input voltage
2 V
p-p
; ±3 V DC 1 V
p-p
; ±1.5 V DC
Sensitivity 2 m V/div to
200 mV/div
1 mV/div to
100 mV/div
Random noise 1.2 mV max, 600
µV typical
600 µV max, 300
µV typical
DC Gain Accuracy - ±0.7% after user-initiated automatic
vertical calibration.
Vertical Resolution - 14-Bits (Approx. 16,384 levels over
10.24 vertical divisions).
Input Impedance - 50 Ohm.
Acquisition Modes
Normal - One sample acquired with each trigger event.
Envelope - Max/min values acquired over one or more
acquisitions.
Average - Waveform averages selectable from 2 to 10,000.
Time Base System
Time Bases - Main, Delayed.
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Time/Division Range - 20 ps/division to 5 ms/division in 1-2-5
steps or settable from the numeric keypad in 5 ps steps.
Delta time measurement accuracy -
Time interval Accuracy
Ti >1 ns 0.1% x interval +15ps
100 ps 5 ps
10 ps 2 ps
Channel Deskew - Up to 100 ns (each channel).
Record Length - 500, 1000, 2000, and 5000, and 15,000
samples per channel.
Pre -Trigger View Time - 1.5 ns.
Triggering System
Trigger Sources - External input, internal rate generator, CH 1,
CH 2.
External Trigger Sensitivity - 40 mV
p-p
from DC to 200 MHz,
increasing linearly to 200 mV
p-p
at 2 GHz.
External Trigger Minimum Pulse Width - 0.25 ns.
Internal Trigger Sensitivity - 80 mV
p-p
from DC to 200 MHz,
increasing linearly to 400 mV
p-p
at 1 GHz.
Trigger Delay Jitter - 3 ps RMS + 30 ppm of time base delay.
Holdoff Range - 15 µs to 2 s.
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.
Graticules - Full, grid, cross hair, frame.
Format - YT and XY.
CRT Type - 7 in. diagonal, magnetic deflection. Horizontal
raster-scan. P4 White phosphor.
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CRT Resolution - 640 horizontal by 480 vertical displayed
pixels.
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
Phase Cycle Area
+ Cross - Cross
Area
Continuous update of up to four measurements on any
combination of waveforms. Snapshot mode shows all
measurements on the selected waveforms.
Thresholds - Settable in percentage or voltage.
Cursor Measurements - Absolute, Delta; Volts, Time,
Frequency.
Cursor Types - Horizontal bars (volts); Vertical bars (time);
Paired (volts and time).
Waveform Processing
Waveform Functions - Interpolate-selectable sin(x)/x or linear,
Average, FFT, integrate, and differentiate.
Arithmetic Operators - Add, Subtract, Multiply, Invert.
Autosetup - Single button, automatic setup on selected input
signal for vertical, horizontal and trigger systems.
Computer Interface
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GPIB (IEEE -488.2) Programmability - Full talk/listen
modes. Control of all modes, settings, and measurements.
Hard Copy
Formats - HP ThinkJet, Epson, Postscript, Interleaf, DeskJet,
LaserJet, EPS Monochrome, EPS Color, TIFF, PCX, BMP,
HPGL.
Optional Hardcopy Interface - Centronics and RS-232C.
Storage
Waveforms - Up to 15 K points.
Setups - 10 front-panel setups.
Power Requirements
Line Voltage Range - 90 to 250 V RMS.
Line Frequency - 47 to 63 Hz.
Power Consumption - 250 W max.
Environment and Safety
Temperature - Operating: 0 to +50°C. non-operating: -40 to
+75°C.
Humidity - Operating and non-operating: 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. non-operating: 40,000 ft.
Electromagnetic Compatibility - Meets MIL-STD-461C,
CE-03, Part 4, Curve # 1, RE-02, Part 7; meets VDE 0871,
Category B, FCC rules and regulations, Part 15, Subpart B,
Class A.
Safety - UL3111-1, CSA1010.1, EN61010-1, IEC61010-1.
Physical Characteristics
Dimensions mm in.
Height 193 7.6
with acc. pouch 236 9.3
Width 445 17.5
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Depth with front cover 432 17
Weight kg lbs.
Net 13.2 29.1
Shipping 23.6 52
Top of Page
Features
Specs
Ordering Information
The TDS Series complies with IEEE Standard
488.2-1987, and with Tektronix Standard Codes and
Formats.
Tektronix Measurement products are
manufactured in ISO registered facilities.
49A-10733-3p88, 06/1997, 09/01/1999
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