475: Difference between revisions
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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)] | * [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]], | The '''Tektronix 475''' is a portable dual-trace oscilloscope with dual time-bases similar to the [[465]], | ||
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It is all solid-state except for the CRT. | It is all solid-state except for the CRT. | ||
It was introduced in November 1972. | It was introduced in November 1972. | ||
Military variant is called OS-261 C(v)1/0, which has DC/DC converter (12/24V input) on board. | |||
A revised version, the 475A, has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. | A revised version, the 475A, has 250 MHz bandwidth and a maximum vertical sensitivity of 5 mV/Div. | ||
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* [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_A9-Interface_board.jpg | 475A A9 Interface Board | ||
475A_A6_Fan_motor.jpg |475A A6 & Fan Motor | 475A_A6_Fan_motor.jpg |475A A6 & Fan Motor | ||
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475A_DMM44_Board.jpg | 475A with [[DM44]] Board on top | 475A_DMM44_Board.jpg | 475A with [[DM44]] Board on top | ||
475A_A3-Vertical_Preamp.jpg | 475A A3 Vertical Preamp Board | 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]] | ||
Revision as of 20:44, 15 May 2020
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.
Military variant is called OS-261 C(v)1/0, which has DC/DC converter (12/24V input) on board.
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.
Key Specifications
Bandwidth | 200 MHz (475), AC cutoff 10 Hz, switchable BW limit 20 MHz |
---|---|
Rise time | 1.75 ns (475) |
Deflection | 2 mV/Div to 5 V/Div, 1-2-5 |
Cascaded mode | 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.) |
Power | 110, 115, 120, 220, 230 or 240 VAC ±10%, 48-440 Hz, max. 100 W |
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.
Links
- Lazy Electrons Tektronix 475A & DM44 Repair Page
- The New Look in Portables, in Tekscope Vol. 4 No. 5, 1972
- Tek 475 / Tek 475A @ amplifier.cd
- Tek 475A in operation @ YouTube
- Handle Replacement Modification Kit
Common Problems
- See 475/Repairs
Pictures
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Tektronix 475A
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Tektronix 475A
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Tek 475 in mixed sweep ("MIX") horizontal mode
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475A with DM44
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475
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475 rear
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475A with DM44
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475
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475A rear
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475 (OS-261 C) rear, with DC-Input
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475A A9 Interface Board
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475A A6 & Fan Motor
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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
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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