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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 lug-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 --> | |||
! colspan="3" |SN Range not applicable for rackmount models | |||
|- | |||
|} | |||
==Links== | ==Links== | ||
* [https://www.radiomuseum.org/r/tektronix_crt_oscilloscope_585.html Tek 585] @ radiomuseum.org | * [https://www.radiomuseum.org/r/tektronix_crt_oscilloscope_585.html Tek 585] @ radiomuseum.org | ||
| Line 283: | Line 373: | ||
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_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_Tunnel-trig.jpeg | Tunnel diode in A-trigger (closeup) | |||
</gallery> | </gallery> | ||
[[Category:580 series scopes]] | [[Category:580 series scopes]] | ||