432

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Tektronix 432
25 MHz dual trace portable scope
Tektronix 432

Produced from 1971 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 432 is a 25 MHz dual-trace portable solid-state oscilloscope.

There is also a rack-mount version, the R432.

Each 432 vertical signal path starts with the coupling switch, then a rotary cam attenuator, then a dual-JFET source-follower buffer amp, then a 155-0050-00 differential amplifier (switched to 155-0050-01 after serial number B239999).

The vertical and horizontal output amplifiers are fully discrete, using silicon bipolar transistors.

Triggering is done by a 4.7 mA tunnel diode that is fed by a discrete trigger amplifier.

The 432 consumes 55 watts maximum and weighs 20 pounds.

P31 phosphor was standard. P7 was also available.

Key Specifications

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Links

Documents Referencing 432

Document Class Title Authors Year Links
Tekscope 1972 V4 N5 Sep 1972.pdf Article Servicing the 432/434 Oscilloscopes Ken Matheson 1972

Patents that may apply to 432

Page Title Inventors Filing date Grant date Links
Patent US 3562464A Cam actuated switch having movable and fixed contacts on circuit board Howard Vollum Willem H Verhoef Tony Sprando 1968-10-07 1971-02-09

Prices

Year 1972 1973
Catalog Price $1,585 $1,585
In 2023 Dollars $11,700 $11,000

Pictures

Components

Some Parts Used in the 432

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
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
155-0048-01 155-0048-00 155-0048-01 155-0055-00 155-0055-01 Monolithic integrated circuit trigger sweep 211 212 213 214 432 433 5B12N 5B13N 5L4N 603 604 605 606 606A 607 624 SC501 R7912
155-0050-01 155-0050-00 155-0050-01 Monolithic integrated circuit differential vertical preamplifier 432 434
155-0051-00 155-0051-00 Monolithic integrated circuit Z-axis and HV regulator 432 434
1N3717 152-0381-00 152-0125-00 Discrete component 4.7 mA, 25 pF tunnel diode 1L40 1S1 1S2 11B1 11B2 11B2A 147A 1470 148 21A 22A 3B4 3B5 408 432 434 453 453A 454 466 491 5T3 544 RM544 546 RM546 547 RM547 556 RM556 7B70 7B71 7D11
STD704 152-0125-00 Discrete component 4.7 mA tunnel diode 1L40 1S1 11B1 11B2 11B2A 147 R147 147A R147A 1470 148 R148 148-M 149 R149 149A R149A 21A 22A 3B4 3B5 408 432 434 453 453A 454 464 465 466 491 5T3 544 RM544 546 RM546 547 RM547 556 RM556 7B70 7B71 7D11