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|introduced=1959
|introduced=1959
|discontinued=1972
|discontinued=1972
|summary=100 MHz oscilloscope
|summary=100 (95) MHz oscilloscope
|designers=John Gates;
|designers=John Gates;
|manuals=
|manuals=
* [[Media:070-171.pdf|Tektronix 585 Manual]] (PDF, OCR)
* [[Media:070-171.pdf|Tektronix 585 Manual]] (OCR)
* [[Media:070-0391-01.pdf|Tektronix 585A Manual]] (PDF)
* [[Media:070-0391-01.pdf|Tektronix 585A Manual]]
* ''070-0392-00.pdf RM585A Manual needed''
* ''[[Media:070-392.pdf|070-392 RM585A Manual needed]]''
* [[Media:070-427.pdf|Tektronix 585A Operator's Manual]] (4"×5", PDF)
* [[Media:070-427.pdf|Tektronix 585A Operator's Manual]] (4"×5")
<small>
<small>


'''Calibration'''
'''Calibration'''
* [[Media:Service Scope 39 Aug 1966.pdf|580 series gain adjustment procedure, in Service Scope 39, Aug 1966]]
* [[Media:Service Scope 39 Aug 1966.pdf|580 series gain adjustment procedure, in Service Scope 39, Aug 1966]]
* [http://w140.com/tek_fcp/tek_585_fac_cal.pdf Tektronix 585 Factory Calibration Procedure, June 1961 (PDF)]
* [https://w140.com/tek_fcp/tek_585_fac_cal.pdf Tektronix 585 Factory Calibration Procedure, June 1961]
* [[Media:Tek 585a fcp nov 1968.pdf|Tektronix 585A Factor Calibration Procedure, November 1968 (PDF)]]
* [[Media:Tek 585a fcp nov 1968.pdf|Tektronix 585A Factor Calibration Procedure, November 1968]]


'''Modifications'''
'''Modifications'''
* [http://web.archive.org/web/20170727004536/http://www.reprise.com/host/tektronix/reference/581_relay.asp  Power supply Mod (From Stan's website, archived)]
* [https://web.archive.org/web/20170727004536/http://www.reprise.com/host/tektronix/reference/581_relay.asp  Power supply Mod (From Stan's website, archived)]
</small>
</small>
}}
}}
The '''Tektronix 585''' is a 100 MHz [[580-series scopes|580-Series scope]] that Tektronix [[introduced in 1959]].
The '''Tektronix 585''' is a 100 MHz [[580-series scopes|580-Series scope]] that Tektronix [[introduced in 1959]].
It was designed by [[John Gates]].
The [[581]] is the same with a single timebase.
The [[581]] is the same with a single timebase.
The 585A facelift model was introduced in 1963 and discontinued after 1971.   
The 585A facelift model was introduced in 1963 and discontinued after 1971.   
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The 585's front panel layout is almost identical to the [[545A]] that came out at the same time. The 585 also shares internal construction and circuits such as the power supply with the [[535]]/[[545]] line of scopes.
The 585's front panel layout is almost identical to the [[545A]] that came out at the same time. The 585 also shares internal construction and circuits such as the power supply with the [[535]]/[[545]] line of scopes.
 
__TOC__
{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Rise time | 3.5 ns with [[80 | Type 80]] plugin and [[P80|P80 probe]] }}
{{Spec | Rise time | 3.5 ns with [[80 | Type 80]] plugin and [[P80|P80 probe]] }}
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==History==
==History==
[https://vintagetek.org/my-early-tektronix-days-by-john-kobbe-2/ John Kobbe says]:
[https://vintagetek.org/my-early-tektronix-days-by-john-kobbe-2/ John Kobbe said]:
<blockquote>
<blockquote>
Later on there was another special CRT designed with [[distributed deflection plates|distributed vertical deflection]] for the 100 Megahertz 580 (well almost 100 MHz). The 580 was the first to, at least at Tek, to use a cross wound continuous signal [[delay line]]. The 580 used a similar horizontal system lifted from the 530’s which was too slow and insufficient writing rate. The [[P80|active probe]] and [[580 Series plug-in interface|plug in system]] left a lot to be desired. I wasn’t very proud of the 580 design as it was too compromised.
Later on there was another special CRT designed with [[distributed deflection plates|distributed vertical deflection]] for the 100 Megahertz 580 (well almost 100 MHz).  
 
The 580 was the first, at least at Tek, to use a cross wound continuous signal [[delay line]].  
 
The 580 used a similar horizontal system lifted from the 530s which was too slow and [had] insufficient writing rate.  
 
The [[P80|active probe]] and [[580 Series plug-in interface|plug in system]] left a lot to be desired. I wasn’t very proud of the 580 design as it was too compromised.
</blockquote>
</blockquote>
==Internals==
==Internals==
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When the main relay engages, the delay relay is cut out so it will be ready to delay again even after a quick interrupt in power input.
When the main relay engages, the delay relay is cut out so it will be ready to delay again even after a quick interrupt in power input.


12.6 V power supply regulation is referenced from +100V regulated output.  Since +100V is not available during the warm-up period, an unregulated +100 V (~+180 V) is fed as the reference to 12.6 V power supply during warmup period. This is cut out by the multi-contact relay post warmup.  
The 12.6 V power supply is referenced to the +100 V regulated output.  Since +100 V is not available during the warm-up period, an unregulated +100 V (~+180 V) is fed as the reference to the 12.6 V power supply during the warm-up period, then cut out by the multi-contact relay post warmup.  


The 585 contains a 53°C (128°F) [[thermal cutoff]].
The 585 contains a 53°C (128°F) [[thermal cutoff]].
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{| class="wikitable"  
{| class="wikitable"  
<!-- Header -->
<!-- Header -->
! colspan="3" | Few of the changes across 585 and 585A
! colspan="3" | Some changes across 585 and 585A
|-
|-
!  
!  
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| colspan="2" |  &nbsp;
| colspan="2" |  &nbsp;
| colspan="2" align="center" | 585
| colspan="2" align="center" | 585
| colspan="4" align="center" | 585A
| colspan="5" align="center" | 585A
|-
|-
! colspan="2" | Year
! colspan="2" | Year
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! 1969
! 1969
! 1971*
! 1971*
! 1972*
|-
|-
! rowspan="2"| mainframe only
! rowspan="2"| mainframe only
| catalog
| Catalog Price
|align=right|  $1,675
|align=right|  $1,675
|align=right|  $1,725
|align=right|  $1,725
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|align=right|  $1,725
|align=right|  $1,725
|align=right|  $1,800
|align=right|  $1,800
|align=right|  $3,325
|align=right|  $2,400
|align=right|  $2,600
|-
|-
| 2020''**''
| In 2023 Dollars
|align=right| $14,890
|align=right| $17,200
|align=right| $14,780
|align=right| $17,600
|align=right| $14,580
|align=right| $17,300
|align=right| $14,170
|align=right| $16,800
|align=right| $12,690
|align=right| $15,100
|align=right| $15,330
|align=right| $18,200
|align=right| $19,100
|-
|-
! rowspan="2"| mainframe+[[80]]+[[P80]]
! rowspan="2"| mainframe+[[80]]+[[P80]]
| catalog
| Catalog Price
|align=right|  $1,825
|align=right|  $1,825
|align=right|  $1,875
|align=right|  $1,875
|align=right|  $1,975
|align=right|  $1,975
|-
|-
| 2020''**''
| In 2023 Dollars
|align=right| $16,220
|align=right| $19,300
|align=right| $16,060
|align=right| $19,100
|align=right| $16,700
|align=right| $19,900
|-
|-
! rowspan="2"| mainframe+[[82]]
! rowspan="2"| mainframe+[[82]]
| catalog
| Catalog Price
|
|
|
|
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|align=right|  $2,575
|align=right|  $2,575
|align=right|  $3,325
|align=right|  $3,325
|align=right|  $3,600
|-
|-
| 2020''**''
| In 2023 Dollars
|
|
|
|
|
|
|align=right| $19,500
|align=right| $23,200
|align=right| $18,150
|align=right| $21,600
|align=right| $21,240
|align=right| $25,300
|align=right| $26,500
|-
|-
!  rowspan="2"| mainframe+[[86]]+[[P6008]]
!  rowspan="2"| mainframe+[[86]]+[[P6008]]
| catalog
| Catalog Price
|
|
|
|
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|align=right|  $2,075
|align=right|  $2,075
|align=right|  $2,185  
|align=right|  $2,185  
|
|
|
|-
|-
| 2020''**''
| In 2023 Dollars
|
|
|
|
|
|
|align=right| $17,040
|align=right| $20,300
|align=right| $15,400
|align=right| $18,300
|
|
|
|}
|}


:''* "limited demand" instrument''
:''* "limited demand" instrument''
:''** original list price corrected for inflation''
 


==Pictures==
==Pictures==
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585-150ns-100hz.jpg      | 585 displaying a ~150 ns pulse at 100 Hz repetition rate at fastest timebase setting
585-150ns-100hz.jpg      | 585 displaying a ~150 ns pulse at 100 Hz repetition rate at fastest timebase setting
585_cyclist.jpg          | Cyclist cartoon in horizontal amplifier schematic
585_cyclist.jpg          | Cyclist cartoon in horizontal amplifier schematic
Tek 585 lvps.png|Tektronix 585 Low Voltage Power Supply Schematic
Tek 585 lvps.png         | Tektronix 585 Low Voltage Power Supply Schematic
</gallery>
</gallery>


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<gallery>
<gallery>
Tek 585a trace.jpg
Tek 585a trace.jpg
585a_front.jpg|585A with [[82]]
585a_front.jpg                         | 585A with [[82]]
Tek 585 upgraded to 585a.jpg|585 with TRIGGER SOURCE switch upgraded to 585A design
Tek 585 upgraded to 585a.jpg           | 585 with TRIGGER SOURCE switch upgraded to 585A design
Wellenkino 585a 2.jpg
Wellenkino 585a 2.jpg
Wellenkino 585A.jpg
Wellenkino 585A.jpg
Tek 585a sine trace.jpg
Tek 585a sine trace.jpg
Tek 585a square trace.jpg
Tek 585a square trace.jpg
Tek 585a with 81a and hickok plugin.jpg|585A with [[81|81A]] and Hickok plug-in
Tek 585a with 81a and hickok plugin.jpg | 585A with [[81|81A]] and Hickok plug-in
Tek 585a handbook.jpg
Tek 585a handbook.jpg
</gallery>
</gallery>
===585A Internals===
===585A Internals===
<gallery>
<gallery>
Tek 585a right internal on cart.jpg|585A on cart
Tek 585a right internal on cart.jpg | 585A on cart
585a_delay1.jpg|585A delay line
585a_delay1.jpg                     | 585A delay line
585_delay2.jpg|585A delay line
585_delay2.jpg                     | 585A delay line
585_delay3.jpg|585A delay line
585_delay3.jpg                     | 585A delay line
585a_trig.jpg|585A trigger circuit
585a_trig.jpg                       | 585A trigger circuit
585a_trig_td2.jpg|White plastic clip holds tunnel diode for triggering
585a_trig_td2.jpg                   | White plastic clip holds tunnel diode for triggering
585a_door_open.jpg|Inside view shows regulator tubes
585a_door_open.jpg                 | Inside view shows regulator tubes
585a_dist_vert amp.jpg|Distributed vertical amplifier
585a_dist_vert amp.jpg             | Distributed vertical amplifier
T580_CRT.JPG|[[T581]]0P31 distributed deflection plates
T580_CRT.JPG                       | [[T581]]0P31 distributed deflection plates
Tek_154-0479-00-dDePlates.jpeg | [[T581]]0P31 distributed deflection plates
Tek_154-0479-00-dDePlates.jpeg     | [[T581]]0P31 distributed deflection plates
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)
</gallery>
</gallery>


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===RM585A Internals===
===RM585A Internals===
<gallery>
<gallery>
Tek_RM585A_Int_LHSjpeg.jpeg | RM585A Internal LHS
Tek_RM585A_Int_LHSjpeg.jpeg               | RM585A Internal LHS
Tek_RM585A_Int_Underside.jpeg | RM585A Internal underside
Tek_RM585A_Int_Underside.jpeg             | RM585A Internal underside
Tek_RM585A_Int_Underside-TimeBaseOpen.jpeg | RM585A Internal Underside - Timebase  door open
Tek_RM585A_Int_Underside-TimeBaseOpen.jpeg | RM585A Internal Underside - Timebase  door open
Tek_RM585A_Int_Top-Dline-open.jpeg| RM585A Top - Internal-  Delay line door open
Tek_RM585A_Int_Top-Dline-open.jpeg         | RM585A Top - Internal-  Delay line door open
Tek_RM585A_Int_Top.jpeg | RM585A - Internal top
Tek_RM585A_Int_Top.jpeg                   | RM585A - Internal top
Tek_RM585A_Int_RHS.jpeg | RM585A Internal RHS
Tek_RM585A_Int_RHS.jpeg                   | RM585A Internal RHS
Tek_RM585A_Int_HV.jpeg | RM585A Internal HV Section
Tek_RM585A_Int_HV.jpeg                     | RM585A Internal HV Section
Tek_RM585A_Int_Rear.jpeg | RM585A Internal - Rear
Tek_RM585A_Int_Rear.jpeg                   | RM585A Internal - Rear
Tek_585A_VOutput-Tubes.jpeg | RM585A Internal - Vamp - Output [[7788]] pair
Tek_585A_VOutput-Tubes.jpeg               | RM585A Internal - Vamp - Output [[7788]] pair
RM585A_12.6V-Recrifier.jpeg | 12.6 V rail silicon diode rectifier with fuse
RM585A_12.6V-Recrifier.jpeg               | 12.6 V rail silicon diode rectifier with fuse
RM585A_T44-Trigger-Transformer.jpeg | T44 - Trigger coupling transformer (Tunnel diode trigger)
RM585A_T44-Trigger-Transformer.jpeg       | T44 - Trigger coupling transformer (Tunnel diode trigger)
RM585A_12.6V-regulator.jpeg | 12.6 V rail regulator transistors
RM585A_12.6V-regulator.jpeg               | 12.6 V rail regulator transistors
RM585A_18V-delayrelay.jpeg | Delay relay 18NO30T
RM585A_18V-delayrelay.jpeg                 | Delay relay 18NO30T
Tek_585A_Trigger-Amp-transistor.jpeg| Trigger amplifier transistor 2N2048
Tek_585A_Trigger-Amp-transistor.jpeg       | Trigger amplifier transistor 2N2048
Tek_585A_Vamp-Plate-Line-Termination.jpeg| Plate line termination (post deflection plates)
Tek_585A_Vamp-Plate-Line-Termination.jpeg | Plate line termination (post deflection plates)
Tek_585A_T1046-transformer.jpeg | T1046 toroid transformer in V-amp, used as phase correction/common mode choke  
Tek_585A_T1046-transformer.jpeg           | T1046 toroid transformer in V-amp, used as phase correction/common mode choke  
Tek_585A_Grid_Line.jpeg | Tek 585A V-amp grid line (Delay Line driver stage)
Tek_585A_Grid_Line.jpeg                   | Tek 585A V-amp grid line (Delay Line driver stage)
Tek_585A_Plate_Line.jpeg | Tek 585A plate line  (partial, delay Line driver stage)
Tek_585A_Plate_Line.jpeg                   | Tek 585A plate line  (partial, delay Line driver stage)
Tek_585A_Tunnel-trig.jpeg | Tunnel diode in A-trigger (closeup)
Tek_585A_Tunnel-trig.jpeg                 | Tunnel diode in A-trigger (closeup)
</gallery>
</gallery>


==Components==
{{Parts|585}}
{{Parts|585}}


{{Parts|585A}}
{{Parts|585A}}


 
{{Plugins|580-series scopes}}


[[Category:580 series scopes]]
[[Category:580 series scopes]]
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