585: Difference between revisions

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* [http://w140.com/tek_585a_serno_14416.pdf Tektronix 585A Manual (PDF)]
* [http://w140.com/tek_585a_serno_14416.pdf Tektronix 585A Manual (PDF)]
* [http://w140.com/tek_fcp/tek_585_fac_cal.pdf Tektronix 585 Factory Calibration Procedure (PDF)]
* [http://w140.com/tek_fcp/tek_585_fac_cal.pdf Tektronix 585 Factory Calibration Procedure (PDF)]
* [[Media:Service Scope 39 Aug 1966.pdf|580 series gain adjustment procedure, in Service Scope 39, Aug 1966]]
* [http://w140.com/585A_Operator_Manual_orig_4x5_inches.pdf Tektronix 585A Operators Handbook (PDF)]
* [http://w140.com/585A_Operator_Manual_orig_4x5_inches.pdf Tektronix 585A Operators Handbook (PDF)]
}}
}}
The '''Tektronix 585''' is a 100 MHz [[580-series scopes|580-Series scope]] introduced by Tektronix in  
The '''Tektronix 585''' is a 100 MHz [[580-series scopes|580-Series scope]] introduced by Tektronix in  
[[introduced_in_1959|1959]] and made through the 1960's.  (The 585A was discontinued after 1971.)
[[introduced_in_1959|1959]] and made through the 1960s.  (The 585A was discontinued after 1971.)


==Specifications==
{{MissingSpecs}}
[[Category:Specifications needed]] ''please add''


==Internals==
==Internals==
Line 51: Line 51:
Tek 585a trace.jpg
Tek 585a trace.jpg
Tek 585 with 82.jpg|585 with [[82]]
Tek 585 with 82.jpg|585 with [[82]]
Image:585a_front.jpg|585A with [[82]].
585a_front.jpg|585A with [[82]]
Image:585a_trig.jpg|585A trigger circuit.
585a_trig.jpg|585A trigger circuit
Image:585a_trig_td2.jpg|White plastic clip holds tunnel diode for triggering.
585a_trig_td2.jpg|White plastic clip holds tunnel diode for triggering
Image:585a_door_open.jpg|Inside view shows regulator tubes.
585a_door_open.jpg|Inside view shows regulator tubes
Image:585a_dist_vert amp.jpg|Distributed vertical amplifier.
585a_dist_vert amp.jpg|Distributed vertical amplifier
Image:Rm 585a.jpg|RM-585A
Rm 585a.jpg|RM-585A
Image:T580_CRT.JPG|T5810P31 distributed deflection plate.
T580_CRT.JPG|[[T581]]0P31 distributed deflection plates
File:Wellenkino 585a 2.jpg
Wellenkino 585a 2.jpg
File:Wellenkino 585A.jpg
Wellenkino 585A.jpg
File:Tek 58x direct crt.png|Direct Connection to CRT (from 1964 Service Scope
Tek 58x direct crt.png|Direct Connection to CRT (from 1964 Service Scope)
File:585a_delay1.jpg|585A delay line
585a_delay1.jpg|585A delay line
File:585_delay2.jpg|585A delay line
585_delay2.jpg|585A delay line
File:585_delay3.jpg|585A delay line
585_delay3.jpg|585A delay line
Tek 585a sine trace.jpg
Tek 585a sine trace.jpg
Tek 585a square trace.jpg
Tek 585a square trace.jpg

Revision as of 04:13, 11 June 2017

{{{manufacturer}}} 
100 MHz oscilloscope
Tektronix 585A

Produced from 1959 to 1972

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 585 is a 100 MHz 580-Series scope introduced by Tektronix in 1959 and made through the 1960s. (The 585A was discontinued after 1971.)

Key Specifications

  • please add

Internals

Plug-in Interface

The 585 uses 580-series plug-ins, which look like letter-series and 1-series plug-ins but are electrically different, primarily in the impedance of the signal interface between the plug-in and the scope. The pin-out is also different: it's essentially flipped 180° from its 530/540/550 series counterparts. 'Signal out' is on 14/16 as opposed to 1/3, etc...

The Type 81 adapter allows the use of letter-series and 1-series plug-ins in a 585.

Trigger Circuit

The original 585 (up to serial number 1070) has an "A" trigger circuit that has a differential trigger amplifier made of a pair of 6EW6 miniature pentodes, followed by a Schmitt trigger made of a pair of miniature dual triode tubes.

Starting at serial number 1071, the miniature dual triode Schmitt trigger was replaced by a 10 mA tunnel diode and a pulse amplifier made with an OC171 germanium PNP transistor. The tunnel diode is AC-coupled to the base-emitter junction of the transistor.

Vertical Signal Path

Like the 545, 551, and 555, the 585 uses a distributed amplifier for vertical deflection. Unlike the other 500-series scopes, the 585 uses a CRT with distributed vertical deflection plates, the T581, enabling it to have both high sensitivity and fast risetime. Total CRT acceleration voltage is 10 kV.

Several improvements were published for the 585 circuitry, including the enhanced trigger circuit. If all of those changes are applied to a 585, it is essentially a 585A.

Rackmount Versions

Rackmount versions were also made, the RM585 and RM585A.

Pictures

  • 585 with 82

    585 with 82

  • 585A with 82

    585A with 82

  • 585A trigger circuit

    585A trigger circuit

  • White plastic clip holds tunnel diode for triggering

    White plastic clip holds tunnel diode for triggering

  • Inside view shows regulator tubes

    Inside view shows regulator tubes

  • Distributed vertical amplifier

    Distributed vertical amplifier

  • RM-585A

    RM-585A

  • T5810P31 distributed deflection plates

    T5810P31 distributed deflection plates

  • Direct Connection to CRT (from 1964 Service Scope)

    Direct Connection to CRT (from 1964 Service Scope)

  • 585A delay line

    585A delay line

  • 585A delay line

    585A delay line

  • 585A delay line

    585A delay line

  • 585 with TRIGGER SOURCE switch upgraded to 585A design

    585 with TRIGGER SOURCE switch upgraded to 585A design

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