422: Difference between revisions
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|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [[Media:070-0434-02.pdf|Tektronix 422 Manual 070-0434-02]] (low quality scan | * [[Media:070-0434-02.pdf | Tektronix 422 Manual 070-0434-02]] (low quality scan) | ||
* [[Media:070-0471-01.pdf|Tektronix 422 Manual 070-0471-01, AC/DC power supply]] | * [[Media:070-0471-01.pdf | Tektronix 422 Manual 070-0471-01, AC/DC power supply]] | ||
* [[Media:070-0528-00.pdf|Tektronix 422 Manual 070-0528-00, AC power supply]] | * [[Media:070-0528-00.pdf | Tektronix 422 Manual 070-0528-00, AC power supply]] | ||
* [[Media:070-0895-00.pdf|Tektronix 422 Manual for Serial Numbers 20,000 and up]] | * [[Media:070-0895-00.pdf | Tektronix 422 Manual for Serial Numbers 20,000 and up]] | ||
* [https://w140.com/tek_422_low_sn.djvu Tektronix 422 Manual] (low sn, DjVu) | * [https://w140.com/tek_422_low_sn.djvu Tektronix 422 Manual] (low sn, DjVu) | ||
* [[Media:tek_422_prb.pdf|Tektronix 422 Product Reference Book]] | * [[Media:tek_422_prb.pdf | Tektronix 422 Product Reference Book]] | ||
* [[Media:Tek 422 lecture notes | * [[Media:Tek 422 lecture notes.pdf | Tektronix 422 Lecture Notes]] | ||
* [[Media:Tek 422 acps fcp june 1969.pdf|422 ACPS FCP Jun 1969]] | * [[Media:Tek 422 acps fcp june 1969.pdf | 422 ACPS FCP Jun 1969]] | ||
* [[Media:Tek 422 fcp april 1969.pdf|422 FCP Apr 1969]] | * [[Media:Tek 422 fcp april 1969.pdf | 422 FCP Apr 1969]] | ||
* [[Media:Tek 422 cal notes.pdf|422 Cal Notes]] | * [[Media:Tek 422 cal notes.pdf | 422 Cal Notes]] | ||
* [[Media:070-0549-00.pdf|Installation Instructions for Tek 422 Battery Pack]] | * [[Media:070-0549-00.pdf | Installation Instructions for Tek 422 Battery Pack]] | ||
<!-- | <!-- | ||
* [https://w140.com/tek_422.pdf Tektronix 422 Manual (PDF, low quality scan)] | * [https://w140.com/tek_422.pdf Tektronix 422 Manual (PDF, low quality scan)] | ||
* [https://w140.com/tek_422_ac_powersupply.pdf Tektronix 422 Manual, AC power supply (PDF)] | * [https://w140.com/tek_422_ac_powersupply.pdf Tektronix 422 Manual, AC power supply (PDF)] | ||
* [https://w140.com/mmm/tek-422.pdf Tektronix 422 Manual with AC/DC Power Supply (PDF)] | * [https://w140.com/mmm/tek-422.pdf Tektronix 422 Manual with AC/DC Power Supply (PDF)] | ||
* [https://w140.com/tek_422_sn_20000_up.pdf Tektronix 422 Manual for Serial Numbers 20,000 and up (PDF)] | * [https://w140.com/tek_422_sn_20000_up.pdf Tektronix 422 Manual for Serial Numbers 20,000 and up (PDF)] | ||
* [https://w140.com/tek_422_product_reference_book.pdf Tektronix 422 Product Reference Book (PDF)] | * [https://w140.com/tek_422_product_reference_book.pdf Tektronix 422 Product Reference Book (PDF)] | ||
--> | --> | ||
}} | }} | ||
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{{Spec | Dimensions | AC PS (H/W/D) 6.75/10.0/17.8 inches, AC-DC PS (H/W/D) 6.75/10.0/20.7 inches }} | {{Spec | Dimensions | AC PS (H/W/D) 6.75/10.0/17.8 inches, AC-DC PS (H/W/D) 6.75/10.0/20.7 inches }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Links== | |||
{{Documents|Link=422}} | |||
* [https://youtu.be/rl-1BQyiaLk LazyElectrons Video on 422] | |||
==Internals== | ==Internals== | ||
Early versions use an [[8056]] Nuvistor tube for the front-end cathode follower. | Early versions use an [[8056]] Nuvistor tube for the front-end cathode follower. | ||
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The 422 uses the [[T4220]] CRT. | The 422 uses the [[T4220]] CRT. | ||
==Pictures== | ==Pictures== | ||
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Tek 422 front.jpg | Tek 422 front.jpg | ||
Tek 422 side.jpg | Tek 422 side.jpg | ||
422 Rear No DC Opt.png|Rear face of 422 without DC battery option | 422 Rear No DC Opt.png | Rear face of 422 without DC battery option | ||
Tek r422 1.jpg|R422, compartment closed | Tek r422 1.jpg | R422, compartment closed | ||
Tek r422 2.jpg|R422, compartment open | Tek r422 2.jpg | R422, compartment open | ||
Black tek 422.jpg|Black 422, panel mount | Black tek 422.jpg | Black 422, panel mount | ||
Tek 422 triag trace.jpg | Tek 422 triag trace.jpg | ||
Tek 422 tight beam.jpg|422 trace is sharp | Tek 422 tight beam.jpg | 422 trace is sharp | ||
Tek_222_wtrace2.jpeg | 422 in ALT | Tek_222_wtrace2.jpeg | 422 in ALT | ||
Tek 422 34.JPG | Tek 422 34.JPG | ||
Tek 422 342.JPG | Tek 422 342.JPG | ||
422 mpf102 cal.jpg | 422 mpf102 cal.jpg | ||
Wellenkino 422.jpg | Wellenkino 422.jpg | ||
DSC_7501_AC_cord.jpg|AC Power Cord with UK Plug | DSC_7501_AC_cord.jpg | AC Power Cord with UK Plug | ||
DSC_7504_DC_cord.jpg|DC Power Cord | DSC_7504_DC_cord.jpg | DC Power Cord | ||
</gallery> | </gallery> | ||
=== Internal=== | === Internal=== | ||
<gallery> | <gallery> | ||
Tek_422-Ind-LHS.jpeg | Tek 422 Internal LHS | Tek_422-Ind-LHS.jpeg | Tek 422 Internal LHS | ||
Tek_422-Ind-RHS.jpeg | Tek 422 Internal RHS | Tek_422-Ind-RHS.jpeg | Tek 422 Internal RHS | ||
Tek_422-Ind-Top.jpeg | Tek 422 Internal Top | Tek_422-Ind-Top.jpeg | Tek 422 Internal Top | ||
Tek_422-Ind-Rear.jpeg | Tek 422 Internal Rear | Tek_422-Ind-Rear.jpeg | Tek 422 Internal Rear | ||
Tek_422-Ind-Under.jpeg | Tek 422 Internal Underside | Tek_422-Ind-Under.jpeg | Tek 422 Internal Underside | ||
Tek_422-Ind-VAmp.jpeg | Tek 422 Internal V-Amp | Tek_422-Ind-VAmp.jpeg | Tek 422 Internal V-Amp | ||
Tek_422-Ind-H-Amp.jpeg | Tek 422 H-Amp Board | Tek_422-Ind-H-Amp.jpeg | Tek 422 H-Amp Board | ||
Tek_422-Ind-Trigger.jpeg | Tek 422 Trigger Board | Tek_422-Ind-Trigger.jpeg | Tek 422 Trigger Board | ||
Tek_422-Ind-Input-Board1.jpeg | Tek 422 Input Board#1 | Tek_422-Ind-Input-Board1.jpeg | Tek 422 Input Board#1 | ||
Tek_422-Input-Board2.jpeg | Tek 422 Input Board#1 | Tek_422-Input-Board2.jpeg | Tek 422 Input Board#1 | ||
Tek_422-Ind-Regulator.jpeg | Tek 422 Indicator unit - Regulator | Tek_422-Ind-Regulator.jpeg | Tek 422 Indicator unit - Regulator | ||
Tek_422-Ind-HV.jpeg | Tek 422 HV Case | Tek_422-Ind-HV.jpeg | Tek 422 HV Case | ||
422 8056 mpf102.jpg|[[MPF102]] replacing [[8056]] | 422 8056 mpf102.jpg | [[MPF102]] replacing [[8056]] | ||
Tek_422-AC-PS.jpeg |Tek422 AC Power Supply Module | Tek_422-AC-PS.jpeg | Tek422 AC Power Supply Module | ||
Tek_422-AC-PS-Int1.jpeg | Tek 422 AC Power supply Internal | Tek_422-AC-PS-Int1.jpeg | Tek 422 AC Power supply Internal | ||
Tek_422-AC-PS2.jpeg | Tek 422 AC Power supply Internal | Tek_422-AC-PS2.jpeg | Tek 422 AC Power supply Internal | ||
Tek_422-AC-PS3.jpeg | Tek 422 AC Power supply Internal | Tek_422-AC-PS3.jpeg | Tek 422 AC Power supply Internal | ||
Tek_422-AC-PS4.jpeg | Tek 422 AC Power supply Internal | Tek_422-AC-PS4.jpeg | Tek 422 AC Power supply Internal | ||
Tek_422-AC-PS5.jpeg | Tek 422 AC Power supply Internal | Tek_422-AC-PS5.jpeg | Tek 422 AC Power supply Internal | ||
Tek 422 front part rear.jpg | Tek 422 front part rear.jpg | ||
Tek 422 left int.jpg | Tek 422 left int.jpg | ||
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Tek 422 vert amp2.jpg | Tek 422 vert amp2.jpg | ||
Tek 422 vert input amps.jpg | Tek 422 vert input amps.jpg | ||
Tek_422-Ind-PS-TP.jpeg | Tek 422 Indicator unit, Power supply Test points | Tek_422-Ind-PS-TP.jpeg | Tek 422 Indicator unit, Power supply Test points | ||
</gallery> | </gallery> | ||
=== Schematic=== | === Schematic=== | ||
<gallery> | <gallery> | ||
Tek 422 trigger.png|Trigger circuit | Tek 422 trigger.png | Trigger circuit | ||
Tek 422 sweep.png|Sweep circuit | Tek 422 sweep.png | Sweep circuit | ||
Tek 422 vertamp.png|Vertical amplifier circuit | Tek 422 vertamp.png | Vertical amplifier circuit | ||
Tek 422 inputamp.png|Input amplifier circuit | Tek 422 inputamp.png | Input amplifier circuit | ||
Tek 422 horizamp.png|Horizontal amplifier circuit | Tek 422 horizamp.png | Horizontal amplifier circuit | ||
Tek 422 crt.png|CRT circuit | Tek 422 crt.png | CRT circuit | ||
Tek-422 lvps2.png|ac-dc power supply | Tek-422 lvps2.png | ac-dc power supply | ||
Tek 422 acps.png|ac power supply | Tek 422 acps.png | ac power supply | ||
</gallery> | </gallery> | ||
Latest revision as of 07:54, 10 January 2024
The Tektronix Type 422 is a 15 MHz portable dual-trace oscilloscope introduced in 1966. It was available with an optional battery back for operation without mains power.
Key Specifications
Bandwidth | DC to 15 MHz |
---|---|
Risetime | < 23 ns |
Sweep | 500 ns/div to 0.5 s/div |
Input impedance | 1 MΩ ±2% // 30 pF |
Delay line | 150 ns, internal delay line |
Input voltage | Max. 300 V combined DC and peak AC |
Trigger source | CH1 & CH2, CH1, External |
Channel isolation | 100:1 at 40 KHz |
Calibrator | ~1 kHz ±20%, 2 V ext jack, 0.2 V internal, square wave |
CRT | T4220 tube, P31 phosphor, 6 kV acceleration (Post-def 4.9 kV), 8 × 10 graticule, 0.8 cm/div |
Operating temperature | –15 °C to +55 °C |
Power | AC PS, 110/115/125 or 210/230/250 VAC ±10%, 45 Hz to 440 Hz, 40 W AC-DC PS, 92–137 or 184–274 VAC, 45 Hz to 440 Hz, 11.5–35 V DC, 30 W |
Dimensions | AC PS (H/W/D) 6.75/10.0/17.8 inches, AC-DC PS (H/W/D) 6.75/10.0/20.7 inches |
Links
Documents Referencing 422
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
Tekscope 1969 V1 N4 Aug 1969.pdf | Article | Nickel-Cadmium Battery Rev1ew | 1969 | 321A • 323 • 410 • 422 |
Internals
Early versions use an 8056 Nuvistor tube for the front-end cathode follower. Later versions use a FET front end. The 8056 Nuvistor used in the input amplifier of the 422 can be replaced by a MPF102 JFET.
The trigger circuit in the 422 has a trigger amplifier driving a 1N3719 tunnel diode, D375, which acts as a Schmitt trigger. The trigger amplifier has a nonlinear deadband diode circuit in the negative feedback path. What results is high gain for small signals (little or no negative feedback) and low gain for large signals (strong negative feedback). Thus, the signal at the base of Q364 has a limited swing over a wide range of input amplitudes. The collector current of Q364 varies between 0 and 9 mA. Depending on the position of the trigger slope control, higher collector current in Q364 either switches D375 from the low-voltage state to the high-voltage state or from the high-voltage state to the low-voltage state. When D375 transitions from the low-voltage state to the high-voltage state, it produces a current pulse in the primary of transformer T401, which produces a current pulse in the secondary of T401. The secondary of T401 feeds another tunnel diode, D405, and the current pulse switches D405 to the high-voltage state, which starts a sweep.
The 422 uses the T4220 CRT.
Pictures
External
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Rear face of 422 without DC battery option
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R422, compartment closed
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R422, compartment open
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Black 422, panel mount
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422 trace is sharp
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422 in ALT
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AC Power Cord with UK Plug
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DC Power Cord
Internal
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Tek 422 Internal LHS
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Tek 422 Internal RHS
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Tek 422 Internal Top
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Tek 422 Internal Rear
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Tek 422 Internal Underside
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Tek 422 Internal V-Amp
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Tek 422 H-Amp Board
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Tek 422 Trigger Board
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Tek 422 Input Board#1
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Tek 422 Input Board#1
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Tek 422 Indicator unit - Regulator
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Tek 422 HV Case
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Tek422 AC Power Supply Module
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Tek 422 AC Power supply Internal
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Tek 422 AC Power supply Internal
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Tek 422 AC Power supply Internal
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Tek 422 AC Power supply Internal
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Tek 422 AC Power supply Internal
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Tek 422 Indicator unit, Power supply Test points
Schematic
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Trigger circuit
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Sweep circuit
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Vertical amplifier circuit
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Input amplifier circuit
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Horizontal amplifier circuit
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CRT circuit
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ac-dc power supply
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ac power supply
Components
Some Parts Used in the 422
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
1N3714 | 152-0081-00 | Discrete component | 2.2 mA, 25 pF germanium tunnel diode | 546 • 547 • 556 • 21A • 22A • 3B1 • 3B2 • 3B3 • 422 • 491 • 283 |
1N3719 | 152-0182-00 | Discrete component | 10 mA, 50 pF germanium tunnel diode | 422 • 661 • 7B92 • 7B92A |
8056 | 154-0417-00 | Vacuum Tube (Triode) | low-voltage Nuvistor triode | 422 • 502 • W • 1S1 • 3A7 • 3S3 • 3T4 • 5T3 • 10A1 |
STD933 | 152-0181-00 | Discrete component | 1 mA, 5 pF germanium tunnel diode | 1S2 • 221 • 422 |
T4220 | 154-0466-00 • 154-0466-05 | CRT | rectangular 3⅜ × 3⅞ flat-faced CRT | 422 |
TD714 | 152-0402-00 | Discrete component | 2.2 mA, 25 pF tunnel diode | 1401 • 1401A • 283 • R283 • 3B2 • 3B3 • 422 • 491 • 546 • RM546 • 547 • RM547 • 556 • RM556 • SPG11 • SPG12 |
ZZ1000 | 154-370 • 154-0370-00 | Gas Discharge Tube (Voltage regulator) | 81 V voltage reference | 129 • 3B1 • 3B1S • 3B2 • 3B3 • 3S76 • 422 • S-311 |