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.

Key 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

Components

Some Parts Used in the 543

Part Part Number(s) Class Description Used in
12BY7A 154-047 154-0047-00 Vacuum Tube (Pentode) miniature 6.5 W power pentode 106 163 524 531 533 535 536 541 543 535 545 545A 549 555 75 3A75 3B5
5642 154-0051-00 154-0079-00 Vacuum Tube (Diode) directly-heated high-voltage rectifier 310 310A 316 317 360 453 502 502A 503 504 506 513 515 516 524 529 RM529 533 533A 535 536 543 543A 543B 545 545A 545B 547 551 555 556 560 561 561A 561S 564 567 570 575 581 581A 585 585A 647 647A
5651 154-052 154-0052-00 154-0288-00 Gas Discharge Tube (Voltage regulator) 87 V voltage reference 128 160 310 310A 502 503 504 511A 512 516 517 524 526 531 531A 535 536 541 541A 543 543A 543B 545 545A 545B 570 549 581 581A 585 585A
6DJ8 154-0187-00 154-0305-00 Vacuum Tube (Dual Triode) dual triode 132 161 310A 316 317 502 502A 503 504 506 515 516 519 526 529 RM529 533 535 536 543 544 545 545A 545B 546 547 549 555 556 561A 561S 564 565 567 581 581A 585 585A 661 1A4 1S1 60 2A60 63 2A63 67 2B67 3A1 3A1S 3A2 3A3 3A6 3A7 72 3A72 75 3A75 4S2 51 3B1 3B1S 3B2 3B3 3B4 3M1 3S76 3T77 3T77A 9A1 9A2 1121 80 81 82 86 B O W Z Telequipment D56 Telequipment S32A Telequipment D52 S-311 Telequipment TD51 Telequipment S52 Telequipment S51 Telequipment Type A TU-4
6DK6 154-0149-00 154-0367-00 Vacuum Tube (Pentode) high-frequency miniature pentode 180 503 513 514 541 543 535 545 545A 551 555
T5430 154-0175-00 154-0758-00 154-0183-00 CRT 5" CRT 541A 543 543A 545A


Some Parts Used in the 543A

Part Part Number(s) Class Description Used in
5642 154-0051-00 154-0079-00 Vacuum Tube (Diode) directly-heated high-voltage rectifier 310 310A 316 317 360 453 502 502A 503 504 506 513 515 516 524 529 RM529 533 533A 535 536 543 543A 543B 545 545A 545B 547 551 555 556 560 561 561A 561S 564 567 570 575 581 581A 585 585A 647 647A
5651 154-052 154-0052-00 154-0288-00 Gas Discharge Tube (Voltage regulator) 87 V voltage reference 128 160 310 310A 502 503 504 511A 512 516 517 524 526 531 531A 535 536 541 541A 543 543A 543B 545 545A 545B 570 549 581 581A 585 585A
T5430 154-0175-00 154-0758-00 154-0183-00 CRT 5" CRT 541A 543 543A 545A


Some Parts Used in the 543B

Part Part Number(s) Class Description Used in
120-0308-00 120-0308-00 Discrete component high voltage transformer 543B 544 545B 546 547
5642 154-0051-00 154-0079-00 Vacuum Tube (Diode) directly-heated high-voltage rectifier 310 310A 316 317 360 453 502 502A 503 504 506 513 515 516 524 529 RM529 533 533A 535 536 543 543A 543B 545 545A 545B 547 551 555 556 560 561 561A 561S 564 567 570 575 581 581A 585 585A 647 647A
5651 154-052 154-0052-00 154-0288-00 Gas Discharge Tube (Voltage regulator) 87 V voltage reference 128 160 310 310A 502 503 504 511A 512 516 517 524 526 531 531A 535 536 541 541A 543 543A 543B 545 545A 545B 570 549 581 581A 585 585A
T5470 154-0429-00 154-0450-00 154-0451-00 154-0452-00 154-0457-00 154-0458-00 154-0459-00 154-0478-00 154-0478-01 154-0478-02 154-0478-03 154-0568-00 154-0568-01 154-0568-02 154-0568-03 CRT 5" electrostatic deflection CRT 543B 544 545B 546 547


Some Parts Used in the RM43


Some Parts Used in the RM543B