543

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The Tektronix Type 543 (rack mount RM43) is an all-tube 30 MHz scope introduced in 1958.

It takes letter-series and 1-series plug-ins.

It is similar to a 545, but without the second, delayed timebase. Instead, it has a range of horizontal magnifiers from ×2 to ×100.

While the 545 has two non-calibrated X-input sensitivities, the 543 has an X input with calibrated deflection sensitivity of 0.1 V/cm, 1 V/cm, or 10 V/cm.

Specifications

     — 543
Bandwidth DC to 30 MHz (≤ 3 dB) with Type K plug-in
Rise time 0.012 μs
Screen Area 4 cm × 10 cm
     — 543B
Bandwidth DC to 33 MHz (≤ 3 dB) with Type 1A1 plug-in
Rise time 0.010 μs
Screen Area 6 cm × 10 cm
     — all
Line Voltage 108/115/122/216/230/244 VAC ±10%, selected via primary voltage selector and voltage range selector switches, 50 Hz to 60 Hz
Thermal Protection Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level
Power Consumption 530 W with Type CA plug-in
Cooling AC Fan
Trigger Modes AC/DC/AC LF Reject, and HF Sync
Anode Potential 10 kV
Construction Aluminum alloy chassis. Anodized front panel
Weight 27.8 kg (61.5 lbs)

Internals

The 543 has the same six-stage balanced distributed amplifier (twelve 6DK6 tubes) as the 545, driving a lumped L/C delay line just before the deflection plates.

Total acceleration voltage on the CRT is 10 kV. The CRT power supply uses five 5642 HV tube diodes. The standard CRT for the 543 is the T65 with P2 phosphor, part number 154-175.

The 543B is a tube/transistor hybrid scope. The vertical amplifier has a 6DJ8 cathode follower stage followed by two transistor/tube cascode stages with a 186 Ω delay line in-between. The standard CRT for the 543B is part number 154-0478-00, also known as the T5470-31-2. There is a rackmount version, Type RM543B.

Question: Does a model 543A exist? Yes, but 543A specification are needed.

Pictures

543

543A

543B

RM543B


Some Parts used in the 543

Page Class Description Used in
12BY7 Vacuum Tube (Pentode) miniature 6.5 W power pentode 106 531 533 535 536 541 543 535 545 545A 549 555
5642 Vacuum Tube (Diode) directly-heated high-voltage rectifier 360 453 502 502A 504 506 513 515 516 533 533A 535 543 543A 543B 545 545A 545B 547 551 555 556 567 575 581 581A 585 585A 647
6DJ8 Vacuum Tube (Double Triode) dual triode 132 502 502A 503 504 515 516 519 533 535 543 544 545 545A 545B 546 547 549 555 556 565 581 581A 585 585A 661 2A60 2A63 3A8 1121 1A4 67 81 82 86 3B1 3B4 O Telequipment S32A Telequipment D52 Telequipment S52 Telequipment S51 Telequipment Type A
6DK6 Vacuum Tube (Pentode) high-frequency miniature pentode 180 503 513 514 541 543 535 545 545A 551 555
T5430 CRT 5" CRT 541A 543 543A 545A


Some Parts used in the 543A

Page Class Description Used in
5642 Vacuum Tube (Diode) directly-heated high-voltage rectifier 360 453 502 502A 504 506 513 515 516 533 533A 535 543 543A 543B 545 545A 545B 547 551 555 556 567 575 581 581A 585 585A 647
T5430 CRT 5" CRT 541A 543 543A 545A


Some Parts used in the 543B

Page Class Description Used in
5642 Vacuum Tube (Diode) directly-heated high-voltage rectifier 360 453 502 502A 504 506 513 515 516 533 533A 535 543 543A 543B 545 545A 545B 547 551 555 556 567 575 581 581A 585 585A 647
T5470 CRT 5" electrostatic deflection CRT 543B 544 545B 546 547


Some Parts used in the RM43

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Some Parts used in the RM543B

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