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-{{Oscilloscope Sidebar |
+{{Oscilloscope Sidebar
-title=Tektronix 555 |
+|manufacturer=Tektronix
-summary=Dual beam 30 MHz scope |
+|series=500-series scopes
-image=Tek 555 front fl2.jpg |
+|model=555
-caption=Tektronix 555 front |
+|summary=Dual beam 30 MHz scope
-introduced=1959 |
+|image=Tek_555-wTrace.jpeg
-discontinued=1970 |
+|caption=Tektronix 555 Front
-manuals=
+|introduced=1959
-* [http://w140.com/mmm/tek-555.pdf 555 manual hosted locally]
+|discontinued=1970
-* [http://bama.edebris.com/manuals/tek/555 555 manual on BAMA (offline?)]
+|designers=
-* [http://w140.com/tek_555_additional_trigger_source_mod.pdf Modification for Additional Trigger Sources]
+|manuals=
-* [[Media:040-0328-01.pdf|Modification for Additional Trigger Sources (PDF, OCR, bad-OCR)]]
+* [[Media:070-165.pdf|555/21A/22A Manual 070-165]]
-* [http://w140.com/tek_555_operators_handbook.pdf 555 Operator's Handbook (PDF)]
+* [[Media:070-403.pdf|555/21A/22A Manual 070-403]]
-* [[Media:070-227.pdf|555 Operator's Handbook (PDF, OCR, bad-OCR)]]
-* [http://w140.com/Tektronix_555_dt._Kurzanleitung.pdf German Introduction the 555 (PDF, OCR)]
+* [[Media:070-227.pdf|555 Operator's Handbook]] (bad-OCR)
-* [[Media:tek_555_crt_specs.pdf|555 CRT Specs (PDF, OCR)]]
+* [[Media:Tektronix 21a-22a.pdf|21A and 22A section of 555 manual]]
-* [[Media:tek_555_fcp.pdf|555 Factory Calibration Procedure (PDF, OCR)]]
-* [[Media:tek_type_21_22_fcp.pdf|Type 21 and 22 Factory Calibration Procedure (PDF, OCR)]]
+<small>
-* [[Media:Tektronix 21a-22a.pdf|21A and 22A section of 555 manual (PDF)]]
+'''Alternate copies'''
-* [[Media:tek_555_section_21a_22a.pdf|21A and 22A section of 555 manual (PDF, OCR, bad-OCR)]]
+* [https://bama.edebris.com/manuals/tek/555 @ BAMA]
+'''Modifications'''
+* [[Media:040-0328-01.pdf|Modification for Additional Trigger Sources]] (bad-OCR)
+* [[Media:tek_555_fcp.pdf|555 Factory Calibration Procedure]] (OCR)
+'''Calibration'''
+* [[Media:tek_type_21_22_fcp.pdf|Type 21 and 22 Factory Calibration Procedure]] (OCR)
+* [[Media:Tek 555 cal outline.pdf|Tektronix 555 Calibration Outline]]
+'''Specifications'''
+* [[Media:tek_555_crt_specs.pdf|555 CRT Specs]] (OCR)
+'''Other'''
+* [[Media:tek_555_section_21a_22a.pdf|21A and 22A section of 555 manual]] (bad-OCR)
+* [[Media:555 compatibility notes.pdf|Notes on the compatibility of 555 plug-ins and mainframe]]
+* [https://w140.com/Tektronix_555_dt._Kurzanleitung.pdf German Introduction the 555] (OCR)
+</small>
 }}
 The '''Tektronix Type 555''', nicknamed "Triple Nickel", is a [[dual-beam scopes|dual-beam CRT oscilloscope]] introduced by Tektronix in
 [[introduced_in_1959|1959]] and made until the late 1960's, when it was replaced by the [[556]].
@@ Line 31: / Line 46: @@
 {{BeginSpecs}}
-{{Spec | Bandwidth | DC to 30 MHz, 3dB down at 30Mhz ±1/2 dB - with type K plug-in }}
+{{Spec | Bandwidth | DC to 30 MHz, 3 dB down at 30 MHz ±0.5 dB (with [[K|Type K plug-in]]) }}
-{{Spec | Rise time | .012 μs}}}
+{{Spec | Rise time | 120 ns}}
-{{Spec | External Horizontal Input | 0.2V/CM to 20V/CM, DC to 240kHz }}
+{{Spec | External Horizontal Input | 0.2 V/cm to 20 V/cm, DC to 240 kHz }}
-{{Spec | Sweep Rates | Type 21 and 22 - 0.1μs to 5 seconds per CM}}
+{{Spec | Sweep Rates | 100 ns/div to 5 s/div (Type 21 and 22)}}
-{{Spec | External Trigger Level  | .2V to 10V}}
+{{Spec | External Trigger Level  | 0.2 V to 10 V}}
-{{Spec | Calibrator  |  ~1kHz, .2mV to 100V pp}}
+{{Spec | Calibrator  | ~1 kHz, 200 μV<sub>p-p</sub> to 100 V<sub>p-p</sub>}}
-{{Spec | CRT | [[T5550]], P2 [[phosphor]] Standard. P1,P7,P11 - Optional.  10kV Acceleration Potential, Usable Area - Total 6 CM, 4 CM per Beam, 2 CM Overlap between beams }}
+{{Spec | CRT | [[T5550]], 10 kV acceleration, P2 [[phosphor]] standard (P1, P7, P11 optional).  Usable area: Total 6 cm, 4 cm per beam, 2 cm overlap between beams }}
-{{Spec | Line Voltage | 105 to 125V or 210 to 250V, 50/60Hz}}
+{{Spec | Line Voltage | 105 to 125 V or 210 to 250 V, 50/60 Hz}}
-{{Spec | Power Consumption | 1050W}}
+{{Spec | Power Consumption | 1050 W}}
-{{Spec | Dimensions Indicator Unit | 24"X13"x20" (LWH)}}
+{{Spec | Dimensions | Indicator Unit, 24"×13"×20"; Power Supply Unit, 17.5"×13"×10" (LWH)}}
-{{Spec | Dimensions Power Supply Unit | 17.5"X13"x10" (LWH)}}
+{{Spec | Weight | Indicator Unit, 68 lb; Power Supply, 45 lb}}
-{{Spec | Weight  Indicator Unit | 68 lb}}
-{{Spec | Weight  Power Supply | 45 lb}}
 {{Spec | Cooling | AC Fan for both Power Supply and Indicator Unit}}
 {{EndSpecs}}
 ==Internals==
@@ Line 73: / Line 85: @@
 A saturable inductor, located in the power supply unit, is connected in series with its primary as the control element of an AC regulator circuit.
 One 6.3 V winding from the indicator unit filament transformer is fed back through the interconnection cable (part number [[012-032]])
-to supply heaters of specific tubes in the power supply unit (V624, V634, V664, V684, V694).  Moreover, a regulator Tube (2AS-15, a
+to supply heaters of specific tubes in the power supply unit (V624, V634, V664, V684, V694).  Moreover, a regulator Tube (2AS-15, a Temperature Limited Diode)
-Temperature Limited Diode) is used to sense this filament voltage and derive a control DC current through the saturable inductor,
+is used to sense this filament voltage and derive a control DC current through the saturable inductor, thereby closing the control loop.
-thereby signal closing the control loop.
-One of the consequences of this scheme is that it the power supply unit will not energize the plate voltages (except +100 V)
+One of the consequences of this scheme is that it the power supply unit will not energize the plate voltages (except +100 V) without the indicator unit connected, because
-without the indicator unit connected, because
 * the 12AX7 comparators and 6AU6 error amplifiers are heated from the indicator unit, so the main series pass tubes (6080s and 12B4s) are not driven even though they are heated from a transformer in the power supply unit;
 * The primary of the plate voltage transformer inside the power supply unit is looped via the thermal cutout in the indicator unit, i.e. the plate voltage transformer in the power supply will not get power unless the indicator unit is attached.
@@ Line 84: / Line 94: @@
 === Vertical Amplifier ===
-The Tektronix 555 has a six-section differential [[distributed amplifier|distributed vertical output amplifier]]
+The Tektronix 555 has a six-section differential [[distributed amplifier|distributed vertical output amplifier]] made of [[6DK6]] tubes.
-made of [[6DK6]] tubes.  It is the same as the vertical output amplifier in the [[551]] and the [[545|545A]].
+It is the same as the vertical output amplifier in the [[551]] and the [[545|545A]].
 An L-C [[delay line]] is located between the vertical output amplifier and the CRT vertical deflection plates for each channel.
-Twelve 6DK6 tubes per beam are used in the main amplifier.  A pair of [[6DK6]]s are used
+Twelve 6DK6 tubes per beam are used in the main amplifier.
-to pick up the trigger signal from the differential drive, and pass it to the horizontal
+A pair of [[6DK6]]s are used to pick up the trigger signal from the differential drive, and pass it to the horizontal plug-in via a cathode follower as a single-ended trigger signal.
-plug-in via a cathode follower as a single-ended trigger signal.
-Another pair of [[6DJ8]]s are used as grid-line driver cathode followers, fed by the [[12BY7]]
+Another pair of [[6DJ8]]s are used as grid-line driver cathode followers, fed by the [[12BY7]] input driver stage, which takes the differential input from the vertical plug-in.
-input driver stage, which takes the differential input from the vertical plug-in.
 A pair of triodes out of [[6DJ8]]s are used as amplifier to drive beam position indicator neons near the CRT.
@@ Line 117: / Line 125: @@
 ==Links==
+* [https://lazyelectrons.wordpress.com/2019/11/10/tektronix-555-restore/ Tektronix 555 Restore/Repair with Videos at Lazy Electrons Blog]
 * [https://www.youtube.com/watch?v=BvbNBZX6kNE Tektronix 555 in operation] @ YouTube
 * [http://www.barrytech.com/tektronix/vintage/tek555.html Tektronix 555 @ barrytech.com]
@@ Line 129: / Line 138: @@
 Tek 555-CA.jpg | Tek 555 with CA Dual Trace Plug-ins
 Tek_555-Delayed-Trace.jpg | Tek 555 in Delayed Trigger Mode
-_left_int.jpg    | left side view
-Tek_555-LHS.jpeg    | 555 Internals, left side (upper beam)
-_rt_int.jpg      | right side view
-Tek_555-RHS.jpeg    | 555 Internals, right side (lower beam)
-_top_int.jpg     | top view
-Tek_555_Top.jpg     | 555 Top with with HV Cover off
-Tek-555-Bottom.jpeg | 555 Bottom
-Tek_555_V-Amp.jpg   | Vertical Amplifier (Lower Beam)
 P11.JPG         | 555 with P11 [[phosphor]] option
 _P7.jpg          | 555 with P7 [[phosphor]] option (fast blue / slow green)
+Tek 555 1050 1.jpg
-Tek 013-013.JPG|timebase plug-in extender, part number 013-013
+Tek 555 1050 2.jpg
 Wellenkino 555-2.jpg
 Wellenkino 555.jpg
 Tek 555 rear.jpg|555 rear
 Tek 555 rear on cart.jpg
+Tek 555 1050 3.jpg
+Tek 555 1050 4.jpg
 Tek 555 side on cart.jpg
 Tek 555 with camera.jpg
-Tek 555 1050 1.jpg
-Tek 555 1050 2.jpg
-Tek 555 1050 3.jpg
-Tek 555 1050 4.jpg
 Tek 555 1050 5.jpg
 Tek 555 1050 6.jpg
 Tek 555 1050 7.jpg
 Tek 555 1050 8.jpg
+Tek 555 technikum29.de.jpg|555 photo from technikum29.de
+Tek 555 rear2.jpeg
+Tek 555 power connector.jpeg
+</gallery>
+'''Internals'''
+<gallery>
+Tek_555-LHS.jpeg    | 555 Internals, left side (upper beam)
+Tek_555-RHS.jpeg    | 555 Internals, right side (lower beam)
+Tek_555_Top.jpg     | 555 Top with with HV Cover off
+Tek-555-Bottom.jpeg | 555 Bottom
+Tek_555_V-Amp.jpg   | Vertical Amplifier (Lower Beam)
+_top_int.jpg     | top view
+_left_int.jpg    | left side view
+_rt_int.jpg      | right side view
+Tek 555 1050 10.jpg
 Tek 555 1050 9.jpg
-Tek 555 1050 10.jpg
-Tek 555 1050 11.jpg
-Tek 555 1050 12.jpg
-Tek 555 technikum29.de.jpg|555 photo from technikum29.de
 </gallery>
 '''CRT'''
@@ Line 175: / Line 185: @@
 '''Power Supply'''
 <gallery>
-_ps.jpg          | external power supply
-Tek 555 ps no tubes2.jpg|555 power supply
-Tek 555 ps bottom.png|555 power supply
-Tek 555 ps no tubes1.png|555 power supply
-Tek 555 ps no tubes3.png|555 power supply
-Tek 555 ps no tubes4.png|555 power supply
 Tek-555-PS-Front.jpg | 555 Power Supply - Front
 Tek-555-PS-Rear.jpg | 555 Power Supply - Rear
+_ps.jpg          | External power supply
 Tek-555-PS-Top.jpg | 555 Power Supply Internals - Top
 Tek-555-PS-Bottom.jpg | 555 Power Supply Internals - Bottom
-Tek 555 cable 3.jpg|Power interconnect, part number 012-032
+Tek 555 ps no tubes2.jpg|555 power supply
-Tek 555 cable 2.jpg|Power interconnect, part number 012-032
+Tek 555 ps bottom.png|555 Power supply
-Tek 555 cable 1.jpg|Power interconnect, part number 012-032
+Tek 555 ps no tubes1.png|555 Power supply
+Tek 555 ps no tubes3.png|555 Power supply
+Tek 555 ps no tubes4.png|555 Power supply
+Tek 555 1050 11.jpg
+Tek 555 1050 12.jpg
 </gallery>
+'''Accessories'''
+<gallery>
+Tek 013-013.JPG|Timebase plug-in extender, part number [[013-0013-00]]
+Tek 555 cable 3.jpg|Power interconnect, part number 012-0032-00
+Tek 555 cable 2.jpg|Power interconnect, part number 012-0032-00
+Tek 555 cable 1.jpg|Power interconnect, part number 012-0032-00
+</gallery>
 '''Schematics'''
 <gallery>
@@ Line 201: / Line 218: @@
 Tek 555 power interconnect.png|power interconnect
 </gallery>
+==Components==
+{{Parts|555}}
 [[Category:500 series scopes]]
 [[Category:Dual beam scopes]]