502: Difference between revisions

From TekWiki
Jump to navigation Jump to search
No edit summary
Line 48: Line 48:


==Pictures==
==Pictures==
===502===
<gallery>
<gallery>
Tek 502 front fl2.jpg
Tek 502 front fl2.jpg
Line 53: Line 54:
Tek_502_front.jpg|502 front view
Tek_502_front.jpg|502 front view
Tek_502.jpg | Image magnified from a flyer
Tek_502.jpg | Image magnified from a flyer
Tek 502a block.png|502A block diagram
Tek-502a vert.png|502A vertical amplifier
Tek 502 crt circuit.png|502 CRT circuit
Tek 502a hvps.png|502A CRT circuit
502-mountain-climber.png              | [[Tektronix Cartoons|Cartoon]] in schematic: Mountain Climber
Tek rm 502a front.jpg|RM 502A
Rm 502a display.jpg|RM 502A display
Rm502a bottom2.jpg|RM 502A bottom
Rm502a transformer wiring.jpg|RM 502A transformer wiring
Rm502a top.jpg|RM 502A top
Rm502a floating pre.jpg|RM 502A vibration-isolated vertical amp
Tek 502 left.jpg|502 left
Tek 502 left.jpg|502 left
Tek 502 right.jpg|502 right
Tek 502 right.jpg|502 right
Tek 502 bottom.jpg|502 bottom
Tek 502 bottom.jpg|502 bottom
502A_Solidstate.JPG| Solid-state input stage with two 6DJ*
</gallery>
 
===502A===
<gallery>
Wellenkino_502a_011.jpg|502A
Wellenkino_502a_011.jpg|502A
Tek rm502a 2 1.jpg | RM502A
Tek rm502a 2 2.jpg | RM502A rear
Tek 502a right internal.jpg|502A right internal
Tek 502a right internal.jpg|502A right internal
Tek 502a right.jpg|502A right
Tek 502a right.jpg|502A right
Tek 502a left.jpg|502A left
Tek 502a left.jpg|502A left
Tek 502a rear.jpg|502A rear
Tek 502a rear.jpg|502A rear
502A_Solidstate.JPG| Solid-state input stage with two 6DJ*
</gallery>
</gallery>


== Third version 502A, serial number greater than 31,000 ==
===RM502A===
<gallery>
Tek rm502a 2 1.jpg | RM502A
Tek rm502a 2 2.jpg | RM502A rear
Tek rm 502a front.jpg|RM 502A
Rm 502a display.jpg|RM 502A display
Rm502a bottom2.jpg|RM 502A bottom
Rm502a transformer wiring.jpg|RM 502A transformer wiring
Rm502a top.jpg|RM 502A top
Rm502a floating pre.jpg|RM 502A vibration-isolated vertical amp
</gallery>
 
=== Third version 502A, serial number greater than 31,000 ===
<gallery>
<gallery>
Tek 502a last generation attenuator.jpg|top side lower beam input amp and attenuator, bottom side of upper beam vert input board
Tek 502a last generation attenuator.jpg|top side lower beam input amp and attenuator, bottom side of upper beam vert input board
</gallery>
===Diagrams===
<gallery>
Tek 502a block.png|502A block diagram
Tek-502a vert.png|502A vertical amplifier
Tek 502 crt circuit.png|502 CRT circuit
Tek 502a hvps.png|502A CRT circuit
502-mountain-climber.png              | [[Tektronix Cartoons|Cartoon]] in schematic: Mountain Climber
</gallery>
</gallery>


Revision as of 05:28, 7 February 2018

{{{manufacturer}}} 
1 MHz dual beam differential scope
Tek 502 front

Produced from 1958 to 1973

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 502 is a dual-beam oscilloscope introduced in 1958, followed by the 502A in the early 1960s.

Both beams have differential inputs.

Specifications

When set for maximum sensitivity, the 502A is 100 μV/cm and has a vertical bandwidth of 50 kHz. At lower sensitivity settings the bandwidth increases - at 200 mV/cm the bandwidth is 1 MHz. At 100 mV/cm and 1 kHz, the common-mode rejection ratio of the 502A is 40,000:1.

please add

Models

There is a 502, a 502A, and a rack-mount model, the RM502A. The price of the 502 in July 1959 was $825.

Internals

There is a transistor-regulated 6.2 VDC heater supply for the tubes in the first stage differential amplifier. This heater supply uses the -150 V supply as its reference. The -150 V supply uses a 5651 voltage reference tube as its reference. There is no post-deflection acceleration. The CRT cathode voltage is -2900 V.

Mod 104 on a 502 provides single sweep lockout.

Later 502A have solid state (include nuvistor) input stage, a 6DJ8 as the deflection amplifier and transistors as amplifiers and cathode followers (only in the newest version).

The 502 uses a single supply for the upper beam and lower beam CRT cathodes. The 502A has separate supplies for the two CRT cathodes. This improvement in the 502A allows slight differences in horizontal CRT sensitivity between the two beams to be canceled out in step 8 of the calibration procedure.

Links

Pictures

502

  • 502 front view

    502 front view

  • Image magnified from a flyer

    Image magnified from a flyer

  • 502 left

    502 left

  • 502 right

    502 right

  • 502 bottom

    502 bottom

502A

  • 502A

    502A

  • 502A right internal

    502A right internal

  • 502A right

    502A right

  • 502A left

    502A left

  • 502A rear

    502A rear

  • Solid-state input stage with two 6DJ*

    Solid-state input stage with two 6DJ*

RM502A

  • RM502A

    RM502A

  • RM502A rear

    RM502A rear

  • RM 502A

    RM 502A

  • RM 502A display

    RM 502A display

  • RM 502A bottom

    RM 502A bottom

  • RM 502A transformer wiring

    RM 502A transformer wiring

  • RM 502A top

    RM 502A top

  • RM 502A vibration-isolated vertical amp

    RM 502A vibration-isolated vertical amp

Third version 502A, serial number greater than 31,000

  • top side lower beam input amp and attenuator, bottom side of upper beam vert input board

    top side lower beam input amp and attenuator, bottom side of upper beam vert input board

Diagrams

  • 502A block diagram

    502A block diagram

  • 502A vertical amplifier

    502A vertical amplifier

  • 502 CRT circuit

    502 CRT circuit

  • 502A CRT circuit

    502A CRT circuit

  • Cartoon in schematic: Mountain Climber

    Cartoon in schematic: Mountain Climber

Retrieved from "https://w140.com/tekwiki/index.php?title=502&oldid=30897"