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'''475''' | '''475''' | ||
* [[Media:070-1333-00.pdf|Tektronix 475 Operators Manual]] (OCR, 14MB, good quality) | * [[Media:070-1333-00.pdf|Tektronix 475 Operators Manual]] (OCR, 14MB, good quality) | ||
* [[Media:070-1332-00.pdf|Tektronix 475 Service Manual]] ( | * [[Media:070-1332-00.pdf|Tektronix 475 Service Manual]] (OCR) | ||
* [[Media:Tek 475 corrections and changes.pdf|Tektronix 475 Service Manual Corrections and Changes]] | |||
* [[Media:070-1862-00.pdf|Tektronix 475 with Option SN B250,000-up]] (165MB) | * [[Media:070-1862-00.pdf|Tektronix 475 with Option SN B250,000-up]] (165MB) | ||
* [[Media:070-2039-00.pdf|Tektronix 475/DM44 Operators Manual]] (16MB) | * [[Media:070-2039-00.pdf|Tektronix 475/DM44 Operators Manual]] (16MB) | ||
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'''Modifications''' | '''Modifications''' | ||
* [[Media:050-1558-00.pdf|Modification: U3165 Replacement]] | * [[Media:050-1558-00.pdf|Modification: U3165 Replacement]] | ||
* [[Media:062-2784-00.pdf|067-0676-00 Vertical Insertion Unit for 475 Datasheet]] | * [[Media:062-2784-00.pdf|067-0676-00 Vertical Insertion Unit for 475 Datasheet]] | ||
* [[050-0674-00|Handle Replacement Modification Kit]] | * [[050-0674-00|Handle Replacement Modification Kit]] | ||
'''History''' | '''History''' | ||
* [[Media:Tek 465 and 475 marketing sales release.pdf|Tektronix 465 and 475 Marketing Sales Release]] | * [[Media:Tek 465 and 475 marketing sales release.pdf|Tektronix 465 and 475 Marketing Sales Release]] | ||
* [[Media:tek_475a_msr.pdf|Tektronix 475A Marketing Sales Release]] | * [[Media:tek_475a_msr.pdf|Tektronix 475A Marketing Sales Release]] | ||
}} | }} | ||
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It is all solid-state except for the CRT. It was introduced in November 1972. | It is all solid-state except for the CRT. It was introduced in November 1972. | ||
The military variant is called OS-261 C(v)1/0, which has a DC/DC converter (12/ | The military variant is called OS-261 C(v)1/0, which has a DC/DC converter (12/24 V input) on board. | ||
The 475M is a standard 475 with enhanced environmental specs. | |||
A revised version, the 475A ([[introduced in 1977]]), has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. | A revised version, the 475A ([[introduced in 1977]]), has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. | ||
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{{Spec | Outputs | CH2 Vert Signal Out, 20 mV/Div into 1 MΩ or 10 mV/Div into 50 Ω; A and B +GATE OUT, +5 V; [[LEMO S-series connector|Probe power jack]] }} | {{Spec | Outputs | CH2 Vert Signal Out, 20 mV/Div into 1 MΩ or 10 mV/Div into 50 Ω; A and B +GATE OUT, +5 V; [[LEMO S-series connector|Probe power jack]] }} | ||
{{Spec | CRT | 8 × 10 cm², P31 phosphor (P11 opt.), [[154-0677-00]] }} | {{Spec | CRT | 8 × 10 cm², P31 phosphor (P11 opt.), [[154-0677-00]] }} | ||
{{Spec | Power | 110, 115, 120, 220, 230 or | {{Spec | Power | 110, 115, 120, 220, 230 or 240 V<sub>AC</sub> ±10%, 48-440 Hz, max. 100 W }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Links== | ==Links== | ||
* [https://lazyelectrons.wordpress.com/2018/02/18/tektronix-475a-dm44-repair/ Lazy Electrons Tektronix 475A & DM44 Repair Page] | * [https://lazyelectrons.wordpress.com/2018/02/18/tektronix-475a-dm44-repair/ Lazy Electrons Tektronix 475A & DM44 Repair Page] | ||
* | * [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/475.htm Tek 475] / [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/475A_DM44.htm Tek 475A with DM44] @ amplifier.cd | ||
{{Documents|Link=475}} | {{Documents|Link=475}} | ||
{{PatentLinks|475}} | |||
===Videos=== | |||
====Zenwizard Studios==== | |||
* [https://www.youtube.com/watch?v=gEXYRPNohyA Tektronix 475 151-0367-00 Guaranteed Bad Parts] ''caution - see notes on [[151-0367-00]] page'' | |||
* [https://www.youtube.com/watch?v=982GcYWIjWI Tektronix 475 non-A Repair and Restoration] | |||
* [https://www.youtube.com/watch?v=KzVMbhytWOg Tektronix 475A and DM44 Power Supply and Tube Alignment] | |||
* [https://www.youtube.com/watch?v=5fGnnTfDNPA Tektronix 475A and DM44 Horizontal Alignment] | |||
* [https://www.youtube.com/watch?v=wfw60QmUp_A Tektronix 475A and DM44 Repair Power Supply and Logic] | |||
* [https://www.youtube.com/watch?v=gtDnTN14JL0 Tektronix 475A Vertical Alignment and One Last Power Supply Issue] | |||
* [https://www.youtube.com/watch?v=tw55DrUR8s8 Tektronix 475A Trigger Section Alignment] | |||
====VintageTek Museum==== | |||
* [https://www.youtube.com/watch?v=WPgkVThknYo Tek 475A / DM44 repair] | |||
====Miscellaneous==== | |||
* [https://www.youtube.com/watch?v=2SESaF7Ibbw Tek 475A in operation] | |||
==Internals== | ==Internals== | ||
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! Year | ! Year | ||
! 1973 | ! 1973 | ||
! | ! 1976 | ||
! 1980 | |||
! 1980 (A) | |||
! 1982 (A) | |||
! 1983 | ! 1983 | ||
|- | |- | ||
! Catalog Price | ! Catalog Price | ||
| $2,500 | |align=right| $2,500 | ||
| $2,900 | |align=right| $2,900 | ||
|align=right| $3,650 | |||
|align=right| $4,050 | |||
|align=right| $4,410 | |||
| | | | ||
|- | |- | ||
! In 2023 Dollars | ! In 2023 Dollars | ||
| $17,300 | |align=right| $17,300 | ||
| $15,700 | |align=right| $15,700 | ||
|align=right| $13,600 | |||
|align=right| $15,100 | |||
|align=right| $14,100 | |||
| | | | ||
|} | |} | ||
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==Pictures== | ==Pictures== | ||
===475=== | |||
<gallery> | <gallery> | ||
Tek 475 mix mode.jpg | Tek 475 in mixed sweep ("MIX") horizontal mode | Tek 475 mix mode.jpg | Tek 475 in mixed sweep ("MIX") horizontal mode |
Latest revision as of 04:48, 19 June 2024
The Tektronix 475 is a portable dual-trace oscilloscope with dual time-bases similar to the 465, but with 200 MHz bandwidth and a maximum vertical sensitivity of 2 mV/Div. It is all solid-state except for the CRT. It was introduced in November 1972.
The military variant is called OS-261 C(v)1/0, which has a DC/DC converter (12/24 V input) on board.
The 475M is a standard 475 with enhanced environmental specs.
A revised version, the 475A (introduced in 1977), has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div.
The 1106 is a battery pack for the 475.
The optional DM44 multimeter attaches to the top of the instrument.
From Tekscope Vol. 4 No. 5, 1972:
Electrical design team [...] for the 475 under the leadership of Jim Hinze was: Jim Godwin, Les Larson, Steve Tosh, and Jim Woo.
Key Specifications
Bandwidth | 200 MHz (475), AC cutoff 10 Hz, switchable BW limit 20 MHz, SN B100000+ also 100 MHz |
---|---|
Rise time | 1.75 ns (475) |
Deflection | 2 mV/Div to 5 V/Div, 1−2−5; 400 μV/Div, 50 MHz with CH1 input connected to CH2 VERT SIG OUT |
Time base | 10 ns/Div to 500 ms/Div, 1−2−5, and ×10 magnifier |
Input impedance | 1 MΩ // 20 pF |
Triggering | 0.3 Div (int) or 50 mV (ext) to 40 MHz, increasing to 1.5 Div/250 mV at 200 MHz; AC coupling >60 Hz; LF REJ >50 kHz, HF REJ <50 kHz |
X bandwidth | 3 MHz |
Z axis input | 5 Vp-p, 50 MHz |
Calibrator | 1 kHz, 30 mA / 300 mV square wave |
Outputs | CH2 Vert Signal Out, 20 mV/Div into 1 MΩ or 10 mV/Div into 50 Ω; A and B +GATE OUT, +5 V; Probe power jack |
CRT | 8 × 10 cm², P31 phosphor (P11 opt.), 154-0677-00 |
Power | 110, 115, 120, 220, 230 or 240 VAC ±10%, 48-440 Hz, max. 100 W |
Links
- Lazy Electrons Tektronix 475A & DM44 Repair Page
- Tek 475 / Tek 475A with DM44 @ amplifier.cd
Documents Referencing 475
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
Tekscope 1972 V4 N5 Sep 1972.pdf | Article | The New Look in Portables | 1972 | 465 • 475 | |
Tekscope 1974 V6 N5.pdf | Article | Understanding oscilloscope trigger controls | 1974 | 475 • 7B70 |
Patents that may apply to 475
Page | Title | Inventors | Filing date | Grant date | Links |
---|---|---|---|---|---|
Patent US 3562464A | Cam actuated switch having movable and fixed contacts on circuit board | Howard Vollum • Willem H Verhoef • Tony Sprando | 1968-10-07 | 1971-02-09 | Cam switches • 2701 • 2703 • 432 • 434 • 465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7B10 • 7B15 • 7B50 • 7B51 • 7B52 • 7B53A • 7B50A • 7B70 • 7B71 • 7B80 • 7B85 • 7B87 • 7B92 • 7B92A • 7D01 • 7D12 • 7D15 • 7J20 • 7S12 • 7T11 • 7T11A • AM503 |
Patent US 3725724A | Deflection factor indicating apparatus | Howard Vollum | 1971-01-11 | 1973-04-03 | 464 • 465 • 475 • 5A14N • 5A26N • 5A48 |
Patent US 3719788A | Switch having ganged contacts mounted on opposite sides of circuit board | Ken Holland • Tony Sprando | 1971-02-04 | 1973-03-06 | 465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7D15 |
Patent US 3753170A | Step attenuator apparatus having attenuator stages selectively connected in cascade by cam actuated switches | Ken Holland | 1971-02-10 | 1973-08-14 | 465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 |
Patent US 3900711A | Electrical contactor assembly for high frequency applications | Ken Holland | 1974-02-04 | 1975-08-19 | 465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7D15 • AM503 |
Videos
Zenwizard Studios
- Tektronix 475 151-0367-00 Guaranteed Bad Parts caution - see notes on 151-0367-00 page
- Tektronix 475 non-A Repair and Restoration
- Tektronix 475A and DM44 Power Supply and Tube Alignment
- Tektronix 475A and DM44 Horizontal Alignment
- Tektronix 475A and DM44 Repair Power Supply and Logic
- Tektronix 475A Vertical Alignment and One Last Power Supply Issue
- Tektronix 475A Trigger Section Alignment
VintageTek Museum
Miscellaneous
Internals
The 475 uses a number of Tek-made integrated circuits, including the 155-0032-01 input preamplifier, 155-0085-00 input amplifier, 155-0078-00 vertical amplifier, 155-0091-00 channel switch, 155-0082-00 vertical output amplifier, and 155-0049-00 sweep control.
Prices
Year | 1973 | 1976 | 1980 | 1980 (A) | 1982 (A) | 1983 |
---|---|---|---|---|---|---|
Catalog Price | $2,500 | $2,900 | $3,650 | $4,050 | $4,410 | |
In 2023 Dollars | $17,300 | $15,700 | $13,600 | $15,100 | $14,100 |
Common Problems
- See 475/Repairs
Pictures
475
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Tek 475 in mixed sweep ("MIX") horizontal mode
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475
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475 rear
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475
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475 (OS-261 C) rear, with DC-Input
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475/DM44 measuring a 1 kHz sine wave
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475/DM44 measuring a 10 kHz sine wave
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475/DM44 measuring a 100 kHz sine wave
475A
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Tektronix 475A
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Tektronix 475A
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475A with DM44
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475A with DM44
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475A rear
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475A A9 Interface board
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475A A6 & Fan Motor
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475A A7 Timing board
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475A Power Supply Section of A9
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475A with DM44 Board on top
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475A A3 Vertical Preamp board
475M
Components
Some Parts Used in the 475
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
120-0799-01 | 120-0799-01 | Discrete component | power transformer | 475 |
151-0261-00 | 151-0261-00 | Discrete component | dual PNP transistor | AM501 • AM502 • CG5001 • CG551AP • FG501 • FG502 • FG503 • OF150 • OF151 • OF152 • OF235 • OS261 • RM502A • R1140 • R5030 • R5031 • R7912 • 067-0679-00 • 067-0807-00 • 1101 • 1140A • 1141 • 1142 • 1350 • 145 • 1450 • 1480 • 1481 • 1482 • 1485 • 1501 • 1801 • 1900 • 1910 • 1980 • 213 • 26A1 • 26A2 • 2620 • 285 • 3A9 • 3A10 • 3S1 • 3S2 • 3S5 • 3S6 • 432 • 434 • 4501 • 454 • 4601 • 4602 • 4610 • 4612 • 4620 • 4632 • 4634 • 4701 • 475 • 492 • 492A • 492AP • 494 • 494P • 496 • 496P • 5A13N • 5A20N • 5A21N • 5A22N • 5A26 • 5L4N • 502A • 5030 • 5031 • 576 • 690SR • 7A22 • 7A29 • 7B51 • 7B71 • 7J20 • 7L5 • 7S11 • 7S12 • 7912AD |
154-0677-xx | 154-0677-00 • 154-0677-10 • 154-0677-14 | CRT | CRT | 475 • 475A |
155-0032-00 | 155-0032-00 • 155-0032-01 | Monolithic integrated circuit | variable-gain transconductance amplifier | 335 • 464 • 465 • 465B • 466 • 475 • 475A • 475M • 634 • 650 • 651 • 652 • 653 • 655 • 656 • 670 • 671 • 7A12 • 475 • FG504 • 1440 • 1460 • 1480 • 1481 • 1482 • 1485 |
155-0049-00 | 155-0049-00 • 155-0049-01 • 155-0049-02 | Monolithic integrated circuit | sweep control with lockout | 335 • 464 • 465 • 466 • 475 • 475A • 475M • 485 • 5B31 • 5B40 • 5B52 • 5B42 • 5B44 • 7B53A • 7B80 • 7B85 • 7B87 • 7B92A • 7B90P • 7B10 • 7B15 • SC502 • 7B42N • AN/USM-281C • 067-0657-00 |
155-0078-00 | 155-0078-xx • 155-0273-00 • 155-0274-00 | Monolithic integrated circuit | broadband amplifier | 464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010 |
155-0082-00 | 155-0082-00 | Monolithic integrated circuit | vertical output amplifier | 475 • 475A |
155-0085-00 | 155-0085-00 • 155-0085-01 | Hybrid integrated circuit | input amplifier | 475 • 475A • 475M |
155-0091-00 | 155-0091-00 | Monolithic integrated circuit | channel switch / HF amplifier | 475 • 475A • 475M |
155-0217-00 | 155-0216-00 • 155-0217-00 | Monolithic integrated circuit | variable-gain transconductance amplifier | 335 • 475 • 7D20 • FG504 |
SKA6516 | 151-0367-00 | Discrete component | NPN Transistor | 465 • 465B • 466 • 475 |
SMTD995 | 152-0140-01 | Discrete component | 10 mA, 8 pF tunnel diode | 1S1 • 1S2 • 1502 • 21A • 22A • 3T5 • 3T6 • 475 • 475A • 475M • 544 • R544 • 546 • RM546 • 547 • RM547 • 556 • R556 • 581A • 585A • RM585 • 7B52 • 7B53N • 7B70 • 7B71 • 7D10 • 7D11 • 7T11 • 7T11A • R7912 • S-51 • S-52 • TU-5 • 067-0572-00 • 067-0572-01 • 067-0681-00 |
STD927 | 152-0386-00 | Discrete component | 10 mA, 25 pF tunnel diode | 475 • 7B50 • 7B51 |
Some Parts Used in the 475A
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
154-0677-xx | 154-0677-00 • 154-0677-10 • 154-0677-14 | CRT | CRT | 475 • 475A |
155-0032-00 | 155-0032-00 • 155-0032-01 | Monolithic integrated circuit | variable-gain transconductance amplifier | 335 • 464 • 465 • 465B • 466 • 475 • 475A • 475M • 634 • 650 • 651 • 652 • 653 • 655 • 656 • 670 • 671 • 7A12 • 475 • FG504 • 1440 • 1460 • 1480 • 1481 • 1482 • 1485 |
155-0049-00 | 155-0049-00 • 155-0049-01 • 155-0049-02 | Monolithic integrated circuit | sweep control with lockout | 335 • 464 • 465 • 466 • 475 • 475A • 475M • 485 • 5B31 • 5B40 • 5B52 • 5B42 • 5B44 • 7B53A • 7B80 • 7B85 • 7B87 • 7B92A • 7B90P • 7B10 • 7B15 • SC502 • 7B42N • AN/USM-281C • 067-0657-00 |
155-0078-00 | 155-0078-xx • 155-0273-00 • 155-0274-00 | Monolithic integrated circuit | broadband amplifier | 464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010 |
155-0082-00 | 155-0082-00 | Monolithic integrated circuit | vertical output amplifier | 475 • 475A |
155-0085-00 | 155-0085-00 • 155-0085-01 | Hybrid integrated circuit | input amplifier | 475 • 475A • 475M |
155-0091-00 | 155-0091-00 | Monolithic integrated circuit | channel switch / HF amplifier | 475 • 475A • 475M |
155-0168-00 | 155-0168-00 | Hybrid integrated circuit | amplifier | 475A |
SMTD995 | 152-0140-01 | Discrete component | 10 mA, 8 pF tunnel diode | 1S1 • 1S2 • 1502 • 21A • 22A • 3T5 • 3T6 • 475 • 475A • 475M • 544 • R544 • 546 • RM546 • 547 • RM547 • 556 • R556 • 581A • 585A • RM585 • 7B52 • 7B53N • 7B70 • 7B71 • 7D10 • 7D11 • 7T11 • 7T11A • R7912 • S-51 • S-52 • TU-5 • 067-0572-00 • 067-0572-01 • 067-0681-00 |
Some Parts Used in the 475M
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
155-0032-00 | 155-0032-00 • 155-0032-01 | Monolithic integrated circuit | variable-gain transconductance amplifier | 335 • 464 • 465 • 465B • 466 • 475 • 475A • 475M • 634 • 650 • 651 • 652 • 653 • 655 • 656 • 670 • 671 • 7A12 • 475 • FG504 • 1440 • 1460 • 1480 • 1481 • 1482 • 1485 |
155-0049-00 | 155-0049-00 • 155-0049-01 • 155-0049-02 | Monolithic integrated circuit | sweep control with lockout | 335 • 464 • 465 • 466 • 475 • 475A • 475M • 485 • 5B31 • 5B40 • 5B52 • 5B42 • 5B44 • 7B53A • 7B80 • 7B85 • 7B87 • 7B92A • 7B90P • 7B10 • 7B15 • SC502 • 7B42N • AN/USM-281C • 067-0657-00 |
155-0078-00 | 155-0078-xx • 155-0273-00 • 155-0274-00 | Monolithic integrated circuit | broadband amplifier | 464 • 465 • 466 • 468 • 475 • 475A • 475M • 485 • 7834 • 7844 • 7854 • 7904 • R7903 • R7912 • 7912AD • 7912HB • 7104 • 7A16A • 7A16P • 7A24 • 7A26 • 7A42 • 067-0587-01 • 067-0680-00 • AM503 • PG502 • PG508 • DC510 • DC5010 • FG5010 |
155-0085-00 | 155-0085-00 • 155-0085-01 | Hybrid integrated circuit | input amplifier | 475 • 475A • 475M |
155-0091-00 | 155-0091-00 | Monolithic integrated circuit | channel switch / HF amplifier | 475 • 475A • 475M |
SMTD995 | 152-0140-01 | Discrete component | 10 mA, 8 pF tunnel diode | 1S1 • 1S2 • 1502 • 21A • 22A • 3T5 • 3T6 • 475 • 475A • 475M • 544 • R544 • 546 • RM546 • 547 • RM547 • 556 • R556 • 581A • 585A • RM585 • 7B52 • 7B53N • 7B70 • 7B71 • 7D10 • 7D11 • 7T11 • 7T11A • R7912 • S-51 • S-52 • TU-5 • 067-0572-00 • 067-0572-01 • 067-0681-00 |