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discontinued=1983 |
discontinued=1983 |
manuals=
manuals=
'''475'''
* [http://w140.com/tek_475_tek.pdf Tektronix 475 Manual (65MB file, ok quality, PDF)]
* [http://w140.com/tek_475_tek.pdf Tektronix 475 Manual (65MB file, ok quality, PDF)]
* [http://w140.com/Tektronix_475_Oscilloscope_Service_Manual.pdf Tektronix 475 Manual (108MB file, good quality, PDF)]
* [http://w140.com/Tektronix_475_Oscilloscope_Service_Manual.pdf Tektronix 475 Manual (108MB file, good quality, PDF)]
* [[Media:TB-9-6625-2240-35.pdf|475 calibration (Army) (OCR)]]
* [[Media:070-1332-00.pdf|Tektronix 475 Manual (65MB file, ok quality, PDF, OCR, bad-OCR)]]
* [[Media:475_DM44_op.pdf|Tektronix 475/DM44 Operators Manual (16MB file, PDF)]]
'''475A'''
* [[Media:070-2163-00.pdf|Tektronix 475A-DM44 Oscilloscope Instruction Manual (OCR, PDF)]]
* [[Media:070-2162-00.pdf|Tektronix 475A Manual (11MB, PDF)]]
* [[Media:tek_475a_block_diagram.pdf|Tektronix 475A Schematics (PDF, OCR, bad-OCR)]]
* [http://w140.com/tek_475a_schematics.pdf  Tektronix 475A Schematics (PDF)]
* [http://w140.com/tek_475a_schematics.pdf  Tektronix 475A Schematics (PDF)]
'''Modifications'''
* [[Media:050-1558-00.pdf|Modification: U3165 Replacement]]
* [[Media:062-2784-00.pdf|067-0676-00 Vertical Insertion Unit for 475 Datasheet (PDF, needs OCR)]]
'''History'''
* [[Media:Tek 465 and 475 marketing sales release.pdf|Tektronix 465 and 475 Marketing Sales Release (PDF)]]
* [[Media:tek_475a_msr.pdf|Tektronix 475A Marketing Sales Release (PDF, OCR, bad-OCR)]]
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* [http://w140.com/tek_475a_description.pdf Tektronix 475A Marketing Sales Release (PDF)]
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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.


''475A [[list of manuals that are needed|manual needed]] (no good quality free scan available)''
Military variant is called OS-261 C(v)1/0, which has DC/DC converter (12/24V input) on board.
}}
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.


A revised version, the 475A, has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. The [[1106]] is a battery pack for the 475.
A revised version, the 475A, 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.
The optional [[DM44]] multimeter attaches to the top of the instrument.
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==Internals==
==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.
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.


==Links==
==Links==
* [https://lazyelectrons.wordpress.com/2018/02/18/tektronix-475a-dm44-repair/ Lazy Electrons Tektronix 475A & DM44 Repair Page]
* The New Look in Portables, in [[Media:Tekscope 1972 V4 N5 Sep 1972.pdf|Tekscope Vol. 4 No. 5, 1972]]
* The New Look in Portables, in [[Media:Tekscope 1972 V4 N5 Sep 1972.pdf|Tekscope Vol. 4 No. 5, 1972]]
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/475.htm Tek 475] / [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/475A_DM44.htm Tek 475A] @ amplifier.cd
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/475.htm Tek 475] / [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/475A_DM44.htm Tek 475A] @ amplifier.cd
* [https://www.youtube.com/watch?v=2SESaF7Ibbw Tek 475A in operation] @ YouTube
* [https://www.youtube.com/watch?v=2SESaF7Ibbw Tek 475A in operation] @ YouTube
* [[050-0674-00|Handle Replacement Modification Kit]]
==Common Problems==
* See [[475/Repairs]]


==Pictures==
==Pictures==
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Tek 475a trace dm44.jpg|475A with [[DM44]]
Tek 475a trace dm44.jpg|475A with [[DM44]]
Tek 475 dual sine.jpg|475
Tek 475 dual sine.jpg|475
Tek_475A_Time-Freq.jpg | 475A Time/Frequency Measurement with [[DM44]], HP Frequency Counter used for Verifying [[DM44]] Output.
Tek 475a rear.jpg|475A rear
Tek 475a rear.jpg|475A rear
Tek_OS_261_rear.jpg | 475 (OS-261 C) rear, with DC-Input
475A_A9-Interface_board.jpg | 475A A9 Interface Board
475A_A6_Fan_motor.jpg |475A A6 & Fan Motor
475A_A9-PowerSupply.jpg | 475A Power Supply Section of A9
475A_DMM44_Board.jpg | 475A with [[DM44]] Board on top
475A_A3-Vertical_Preamp.jpg | 475A A3 Vertical Preamp Board
Tek475DM44 1khz.jpg | 475/DM44 measuring a 1 kHz sine wave
Tek475DM44 10khz.jpg | 475/DM44 measuring a 10 kHz sine wave
Tek475DM44 100khz.jpg | 475/DM44 measuring a 100 kHz sine wave
</gallery>
</gallery>


[[Category:400 series scopes]]
[[Category:400 series scopes]]
[[Category:Specifications needed]]
[[Category:Manual needed]]
BobHaas
46

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