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==585A differences==
==585A differences==
The 585A uses a tunnel-diode trigger circuit (see below), adds HF Sync and AC LF reject modes to the timebase A trigger selector, and adds a [[trace rotation]] coil.
The 585A uses a tunnel-diode trigger circuit (see below), adds HF Sync and AC LF reject modes to the timebase A trigger selector, and adds a [[trace rotation]] coil.
{| class="wikitable"
<!-- Header -->
! colspan="3" | Few of the changes across 585 and 585A
|-
!
! 585
! 585A
<!-- End Header -->
<!-- Start section -->
|-style="background-color:#ffffff;"
!  rowspan="2" | A-Trigger
| SN Up-to  1070
*6EW8 Trigger comparator.
*6DJ8 Trigger multivibrator
| rowspan="2" |
*Tunnel diode trigger
*PNP trigger amplifier [[2N2048]]
|-style="background-color:#ffffff;"
| SN 1071-Up
*Tunnel diode trigger
*PNP trigger amplifier [[OC171]]
<!-- End Section -->
<!-- Start section -->
|-
!Sweep Generator
| Standard
| SN 120000-up
D152/252 added to [[6AL5]] disconnect diodes
<!-- End section -->
<!-- Start section -->
|-style="background-color:#ffffff;"
! rowspan="2"| 12.6V Power
| SN Up-to 3762
*Used for plug-in
*Selenium rectifier
| rowspan="2" |
*Used for plug-in and vertical amplifier heaters
*SN 6580-up  Fused
|-style="background-color:#ffffff;"
| SN 3763-Up 
*Used for plug-in and vertical amplifier heaters
*Minor design changes from earlier SN
<!-- End Section -->
<!-- Start section -->
|-
! rowspan="2"| Vertical amplifier
grind/plate line fuses
| SN Up-to 3762 No Fuse
| rowspan="2" |  Fused
|-
| SN 3763-Up - added F1210, F1260, F1285
<!-- End Section -->
<!-- Start section -->
|-style="background-color:#ffffff;"
! rowspan="2"| Delay Relay
| rowspan="2"|  6NO45
*Heater power from unregulated 18V DC
* 33Ω dropping resistor.
| SN Up-to 9179
*6NO45
*Heater power from unregulated 18V DC
* 33Ω dropping resistor.
|-style="background-color:#ffffff;"
| SN 9180-Up
*18NO30
*Heater power from unregulated 18V DC
|-
<!-- End Section -->
<!-- Start section -->
|-
! Trace Rotation
| Not present
| SN 9000-Up - Added trace rotation
|-
<!-- End Section -->
<!-- Start section -->
|-style="background-color:#ffffff;"
! Final vertial power amp
|  [[6939]]/AX193/7699 dual tetrode
| 2 X [[7788]] Pentode
|-
<!-- End Section -->
<!-- Start section -->
|-
! Power supply Mod
| None
| SN 9250-Up Main relay K601-4 relocated [http://web.archive.org/web/20170727004536/http://www.reprise.com/host/tektronix/reference/581_relay.asp  Details]
|-
<!-- End Section -->
! colspan="3" |SN Range not applicable for rackmount models
|-
|}


==Links==
==Links==
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Rackmount versions were also made, the RM585 and RM585A.
Rackmount versions were also made, the RM585 and RM585A.


===Circuit Variants===
{| class="wikitable"
<!-- Header -->
! colspan="3" | Few of the changes across 585 and 585A
|-
!
! 585
! 585A
<!-- End Header -->
<!-- Start section -->
|-style="background-color:#ffffff;"
!  rowspan="2" | A-Trigger
| SN up to 1070
*[[6EW8]] Trigger comparator.
*[[6DJ8]] Trigger multivibrator
| rowspan="2" |
*Tunnel diode trigger
*PNP trigger amplifier [[2N2048]]
|-style="background-color:#ffffff;"
| SN 1071 up
*Tunnel diode trigger
*PNP trigger amplifier [[OC171]]
<!-- End Section -->
<!-- Start section -->
|-
!Sweep Generator
| Standard
| SN 120000 up
D152/252 added to [[6AL5]] disconnect diodes
<!-- End section -->
<!-- Start section -->
|-style="background-color:#ffffff;"
! rowspan="2"| 12.6 V Power
| SN up to 3762
*Used for plug-in
*Selenium rectifier
| rowspan="2" |
*Used for plug-in and vertical amplifier heaters
*SN 6580 up  Fused
|-style="background-color:#ffffff;"
| SN 3763 up 
*Used for plug-in and vertical amplifier heaters
*Minor design changes from earlier SN
<!-- End Section -->
<!-- Start section -->
|-
! rowspan="2"| Vertical amplifier
grind/plate line fuses
| SN up to 3762: No Fuse
| rowspan="2" |  Fused
|-
| SN 3763 up: Added F1210, F1260, F1285
<!-- End Section -->
<!-- Start section -->
|-style="background-color:#ffffff;"
! rowspan="2"| Delay Relay
| rowspan="2"|  [[6NO45]]
*Heater power from unregulated 18 V DC
* 33 Ω dropping resistor.
| SN up to 9179
*[[6NO45]]
*Heater power from unregulated 18 V DC
* 33 Ω dropping resistor.
|-style="background-color:#ffffff;"
| SN 9180 up
*[[18NO30]]
*Heater power from unregulated 18 V DC
|-
<!-- End Section -->
<!-- Start section -->
|-
! Trace Rotation
| Not present
| SN 9000 up: Added trace rotation
|-
<!-- End Section -->
<!-- Start section -->
|-style="background-color:#ffffff;"
! Final vertical power amp
|  [[6939]]/AX193/7699 dual tetrode
| 2 × [[7788]] Pentode
|-
<!-- End Section -->
<!-- Start section -->
|-
! Power supply Mod
| None
| SN 9250 up: Main relay K601-4 relocated [http://web.archive.org/web/20170727004536/http://www.reprise.com/host/tektronix/reference/581_relay.asp  Details]
|-
<!-- End Section -->
! colspan="3" |SN Range not applicable for rack-mount models
|-
|}
==Prices==
==Prices==
{|
{|
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Tek-585-82.jpg          | 585 with [[82|Type 82 plug-in]]
Tek-585-82.jpg          | 585 with [[82|Type 82 plug-in]]
Tek 585 with 82.jpg      | 585 with [[82|Type 82 plug-in]]
Tek 585 with 82.jpg      | 585 with [[82|Type 82 plug-in]]
Tek 585 non A Field Modification 040-275 label.jpg | Front panel label indicating Field Modification 040-275 is applied
</gallery>
</gallery>
===585 non-A Internals===
===585 non-A Internals===
Line 382: Line 385:
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 | 12.6V Silicon diode rectifier with fuse
RM585A_12.6V-Recrifier.jpeg | 12.6 V 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 Volt regulator transistors
RM585A_12.6V-regulator.jpeg | 12.6 V 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 Troid transformer in Vamp, used for 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)
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