Tektronix 11801C Digital Sampling Oscilloscope

Features

The 11801C Digital Sampling Oscilloscope offers the widest range of on-board measurement and waveform processing capabilities of any multi-Gigahertz scope. With excellent measurement repeatability, exceptional vertical resolution and fast display update rate, the 11801C is a powerful measurement tool for semiconductor testing, TDR characterization of circuit boards, IC packages and cables, and high speed digital data communications.

The modular microprocessor-based architecture of the 11801C not only allows you to select the right configuration for your application, but also allows expandability to meet your future measurement needs. The 11801C accepts up to 4 dual-channel sampling heads and can be expanded through the SM-11 Multi-Channel Units to 136 channels. There are currently nine sampling heads to choose from:

SD-14 3 GHz high impedance (100 kilohm/0.475 pF) dual-channel probe sampler

SD-20 20 GHz single-channel loop-through head

SD-22 12.5 GHz dual-channel low noise head

SD-24 20 GHz dual-channel TDR/sampling head

SD-26 20 GHz dual-channel sampling head

SD-32 50 GHz, single-channel sampling head

SD-42 6.4 GHz O/E converter (55 ps optical pulse response FWHM)

SD-44 15 GHz O/E converter

SD-51 20 GHz trigger head

Specifications

Vertical Systems

Rise Time/Bandwidth - Determined by the sampling head used.*¹

Vertical Resolution - 8 bits full screen (78 µV LSB at 2 mV/div deflection factor).

Amplifier Gain Accuracy - ±1% of all settings.

Deflection Factors - 2 to 255 mV/div in
1 mV/div increments.

Offset Range - ±2 V.

Main and Window Time Base - 1 ps/div to 5 ms/div, settable in 1-2-5 sequence or in 1 ps increments.

Time Interval Accuracy - 8 ps + 0.01% x (interval) + 0.001% x (position), guaranteed;
4 ps + 0.004% x (interval) + 0.0004% x (position), typical, where interval >/=1 ns;
2.5 ps + 0.0004% x (position), typical, where interval = 100 ps;
1 ps + 0.0004% x (position), typical, where intervals <10 ps.

Notes: 1) For intervals <100 ps, the above holds for time/div </=20 ps/div.
2) For other intervals not listed above, linearity interpolate the cardinal points.

Record Length - 512, 1024, 2048, 4096, and 5120 samples.

Windows - Any number of window records may be placed on any number of main records, up to a maximum of 8 displayed traces. All window records have the same duration, but may be independently positioned on any main record. Windows may be set to automatically track a moving edge on the main record.

Maximum Sampling Rate - 200 ks/s.

Trigger Bandwidth - Direct 4 GHz typical, Prescaled 12.5 GHz typical.

Trigger Sensitivity - Direct DC to 4 GHz: 50 mV typical.
Prescaled 2 to 10 GHz: 500 mV,
10 to 12.5 GHz: 800 mV typical.

Delay Jitter - 1.1 ps +4 ppm of a position typical. 2.0 ps +5 ppm of position
maximum (RMS).

Metastability: Raw <0.005 ppm at 2.488 GHz with 200mV input trigger voltage, typical.
Enhanced is theoretically zero.

Internal Clock - 100 kHz (drives TDR, Internal Clock Output, and Calibrator).

Trigger Level Range - ±1.0 V (±10 V with 10X trigger attenuator activated).

Trigger Input Range - ±1.5 V (±1.5 V, 5 V
RMS maximum with 10X).

Trigger Holdoff - 5 µs to 2.5 s.

Waveform Processing Functions - Add, subtract, multiply, divide, absolute, average, differentiate, envelope, exponent, integrate, natural log, log, signum, square root, smoothing, and filter.

Measurement Set - Max, min, mid, p-p, mean, RMS, amplitude, extinction ratio, overshoot, undershoot, noise*³, rise, fall, spectral magnitude, spectral frequency, THD, SNR, frequency, period, prop delay, cross, width, phase, duty cycle, jitter*³, area +, area -, and energy. Measurements are constantly updated; mean and standard deviation available on all measurements.

Measurement Parameters - (Proximal, mesial, distal, and start/stop levels): May be set to absolute levels.

Cursors - Paired or split dots, vertical bars, and horizontal bars.

Combined TDR/Acquisition Reflected Risetime - 35 ps or less.

TDR Step Amplitude - Adjustable to ±250 mV (polarity of either step may be inverted).

Time Coincidence Between TDR Steps - Adjustable to less than 1 ps.

Source Resistance - 50 ±0.5 Ohm.

Typical Aberrations (at ±250 mV Amplitude) - 10 ns to 20 ps before step: ±3% or less;
less than 300 ps after step: +10%, -5% or less;
300 ps to 5 ns after step: ±3% or less; elsewhere: ±1% or less.

CRT - 9 in. diagonal, magnetic deflection, vertical raster scan orientation. Color.

Colors - Eight-color default color set included; or, colors are user-selectable from palette of 262,144 colors.

Video Resolution - 552 horizontal by 704 vertical displayed pixels.

*¹ Vertical system specifications of 11801C with SD-14 non-applicable. See 11800 Series Sampling Head specifications.

*² 11801C has external trigger only; requires 23 ns pretrigger or DL-11 Delay Lines to view trigger point (45.5 ns with Option 1M).

*³ Available only in statistical measurement mode.

Line-Voltage Ranges - 90 to 132 V RMS, 180 to 250 V RMS.

Line Frequency - 48 to 440 Hz.

Maximum Power Consumption - 214 W.

Temperature - Operating: 0°C to +50°C; non-operating: -40°C to +75°C.

Humidity - Operating and nonoperating: up to 95% relative humidity, up to 50°C. Per Mil-T-28800E, Type III, Class 5.

Altitude, Vibration, Shock non-operating, Bench Handling - Meets MIL-T-28800E, Type III, Class 5.

Electromagnetic Compatibility (with sampling heads or optional blank panels installed in all sampling head compartments) - Meets the requirements of: MIL-STD-461B; FCC Part 15, sub-part J, Class A; VDE 0871/6.78 Class B.

Safety - Listed UL 1244, CSA Bulletin 556B September 1973.

Ordering Information

11801C Digital Sampling Oscilloscope

Includes: User Manual (070-9971-00);

Programmer Manual (070-9970-00);
Service Manual (070-9972-00);
12-inch SMA-SMA cable,
2 ea. 8-1/2-inch SMA-SMA cable,
1 wrist strap.

Opt 1M - Multi-Channel Conversion: Modifies 11801C to permit operation with up to four SM-11 Multi-Channel Units.

Opt 1R - Rackmount.

Includes: Hardware, tooling, and instructions for converting bench model to rackmount configuration. Available with 11801C.

Includes: Delay Line Instruction Sheet - Order 070-7051-01.

Option A1-A5 - Available.

Sampling Head Extender Cable, 1 meter - 012-1220-00.

Sampling Head Extender Cable, 2 meter - 012-1221-00.

DL-11 Service Manual - 070-7050-01.

Blank Panel for Empty Sampling Head Compartments - 200-3395-00.

ECL Terminator - 015-0558-00.

SMA Accessory Kit - 020-1693-00.

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