516

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Tektronix 516
15 MHz dual-trace scope
Tektronix 516

Produced from 1960 to 1972

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix Type 516 is a monolithic 15 MHz dual-trace oscilloscope introduced in 1960. It contains no transistors.

The 516 is essentially a dual trace version of the 515. The main difference between the 515 and 516 is the front end.

The 515 uses a conventional rotary switch for the input attenuator while the 516 uses turret attenuators. There are also some differences in the vertical amplifier circuitry. The 515 uses a 6AU6 pentode at the front end. The 516 uses a 6DJ8 dual triode at the front end, and in many other places throughout the instrument.

In a 516, the delay line directly drives the vertical deflection plates of the CRT.

The standard CRT is the T55 with P31 phosphor. It has a post-deflection acceleration voltage of +2335 V. The CRT cathode runs at -1675 V. The HV power supply uses three 5642 rectifier tubes:

  • V822 for the CRT cathode voltage
  • V832 for the CRT control grid voltage
  • V842 for the post-deflection voltage

The LV power supply is typical of 1960's Tek scopes. It provides:

  • +400 V unregulated
  • +300 V regulated, using one triode of a 6080 as the output tube
  • +100 V regulated, using one triode of a 6080 as the output tube
  • -150 V regulated, using a 6AU5 tube as the output tube

The reference for the LV supply is a 5651 which produces a -87 V reference, which controls the -150 V supply. The -150 V supply is used as the reference for the +100 V and +300 V supplies. The LV power supply uses the 120-142 power transformer.

Specifications

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Pictures

External

Internals

Schematic


Some Parts used in the 516

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
6197 Vacuum Tube (Pentode) sharp-cutoff pentode 516 531 533 535 535A 556
6AL5 Vacuum Tube (Double Diode) high-perveance dual diode 181 316 317 502 502A 511 511A 516 535 535A 545 545A 549 581 581A 585 585A 551 Telequipment S52
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
6GM8 Vacuum Tube (Dual Triode) dual triode 516
7119 Vacuum Tube (Dual Triode) dual triode 067-0532-00 191 3A3 3B4 3B5 516 545B 549 661
T0550 CRT CRT 515 515A 516
T55 CRT CRT 515 515A 516