5031

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Tektronix 5031
1 MHz diff-input dual-beam storage scope
Tektronix 5031 front view

Produced from 1969 to 1972

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 5031 is a dual-beam split-screen, bi-stable storage oscilloscope introduced in 1969 (no longer listed in the 1973 catalog). There is a portable benchtop model, the 5031, and a rack-mount model, the R5031, as well as a sister model 5030/R5030 without storage. The 503x series are monolithic scopes (no plugins).

The 5030 and 5031 feature differential and current probe (for P6021) inputs on both channels. Input ranges are similar to the contemporary 3A9 diff/current amplifier plugin but without the variable bandwidth and DC offset controls. The horizontal deflection system is shared.

The 5031/5030 include a readout system which uses small lightbulb/fiber dot matrix displays external to the CRT, similar to that in the 576 curve tracer. Only the first and last steps on the time/div and volts/div switches are labelled.

Key Specifications

Bandwidth DC to 1 MHz (5 kHz limit switchable)
Deflection 10 μV/Div to 10 V/Div or 1 mA/Div to 200 mA/Div (1—2—5)
Noise < 15 μV / 200 μA
Input impedance 1 MΩ // 50 pF
Time base 1 μs/Div to 5 s/Div (1–2–5), magnifier × 1, 2, 5, 10, 20, 50 (1 μs/Div max.)
CMRR 100,000:1 to 100 kHz
X input 20 mV/Div to 500 mV/Div on Ext Horizontal, or Channel 2 in X-Y mode
CRT 8 × 10 Div @ 1.27 cm (0.5"), P31 phosphor
Acceleration voltage 4 kV

Links

Documents Referencing 5031

Document Class Title Authors Year Links
Tekscope 1970 V2 N2 Apr 1970.pdf Article A Dual-beam Family 1970

Documents Referencing R5031

Document Class Title Authors Year Links
Tekscope 1970 V2 N2 Apr 1970.pdf Article A Dual-beam Family 1970

Patents that may apply to 5031

Page Title Inventors Filing date Grant date Links
Patent US 3453403A Power selection device Eldon Hoffman 1966-08-18 1969-07-01
Patent US 3618130A High efficiency regulated oscillator circuit having a substantially sinusoidal waveform Val Garuts 1969-07-28 1971-11-02

Internals

The channel-1 and channel-2 input attenuators use a rotary barrel cam that moves several small contact arms to select the desired path through the attenuator networks.

The design is similar to that seen in several 7000-series plug-ins. The front-end amplifier starts with a differential amplifier formed by both halves of a 151-1027-00 dual JFET, Q46, followed by a dual PNP. The rest of the signal path comprises differential amplifiers made of discrete BJTs, including the deflection amplifier, which uses SE7056 transistors for its output stage.

The 5031 makes extensive use of relays in the signal path.

The 5031 has −4.1 kV on the CRT cathode, and no post-deflection acceleration. The 5031 uses a T7020 CRT.

Pictures

5031

R5031

Components

Some Parts Used in the 5031

Part Part Number(s) Class Description Used in
151-0261-00 151-0261-00 Discrete component dual PNP transistor AM501 AM502 CG5001 CG551AP FG501 FG502 FG503 OF150 OF151 OF152 OF235 OS261 RM502A R1140 R5030 R5031 R7912 067-0679-00 067-0807-00 1101 1140A 1141 1142 1350 145 1450 1480 1481 1482 1485 1501 1801 1900 1910 1980 213 26A1 26A2 2620 285 3A9 3A10 3S1 3S2 3S5 3S6 432 434 4501 454 4601 4602 4610 4612 4620 4632 4634 4701 475 492 492A 492AP 494 494P 496 496P 5A13N 5A20N 5A21N 5A22N 5A26 5L4N 502A 5030 5031 576 690SR 7A22 7A29 7B51 7B71 7J20 7L5 7S11 7S12 7912AD
151-1027-00 151-1027-00 Discrete component dual N-channel JFET 5031 3A9 AM502
155-0028-00 155-0028-00 155-0028-01 155-0042-00 155-0042-01 155-0042-02 155-0042-03 Monolithic integrated circuit Miller integrator and delay pickoff 5030 R5030 5031 R5031 1401 1401A 1480 1481 1482 1485 26G1 26G2 26G3 314 335 432 434 4701 5B10N 5B12N 5B31 5B40 5B42 5S14N 7B52 7B53A 7B53N 7L12 7L13 7L14 7L18 7S14 AN/USM-281C RG501 Telequipment D63 Telequipment DM63
155-0029-01 155-0029-01 Monolithic integrated circuit Trigger 26G1 26G2 26G3 4701 5030 R5030 5031 R5031 5B10N
155-0030-00 155-0030-00 Monolithic integrated circuit Storage logic 5031 R5031
155-0031-01 155-0031-00 155-0031-01 Monolithic integrated circuit quad timing unit 5031 R5031 4002A T4005 4903
T7020 154-0618-00 CRT dual-beam, direct-view storage CRT 5031