543
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
543 with D Plugin
543 front view
543 top
543 right
543 top
543 left
543 rear
543 Block Diagram
543 Horizontal Amplifier
543 Vertical Amplifier
543 Trigger
543 Timebase
543 Delay Line
543 CRT Circuit
543 Low-Voltage Power Supply
543 Calibrator
543A
a proof for their exists.
543B
543B with CA
543B
543B
RM543B
RM543B
RM543B side
