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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
summary=15 MHz Tube scope | | |series= | ||
image=515a trace.jpg | | |model=515 | ||
caption=Tektronix 515 front | | |summary=15 MHz Tube scope | ||
introduced=1955 | | |image=515a trace.jpg | ||
discontinued=(?) | | |caption=Tektronix 515 front | ||
manuals= | |introduced=1955 | ||
* [ | |discontinued=(?) | ||
* [ | |manuals= | ||
* [[Media:070-247.pdf|Tektronix 515 Manual]] (OCR)<br /><small>Alternate: [[Media:TekInstructionManual_515_515A_P31.tif|515/515A (P31)]] (29M TIF) </small> | |||
* 515A Factory Calibration Procedure: [[Media:tek_515a_fcp.pdf|May 1960]] (OCR) / [[Media:Tek 515a fcp dec 1968.pdf | December 1968]] | |||
* [[Media:Tek 515a mod 760a.pdf|Tektronix 515A Mod 760A]] | |||
* [[Media:Tek 515a mod 760c.pdf|Tektronix 515A Mod 760C]] | |||
* [[Media:Tek 515 mod760 eng docs.pdf|Tektronix 515A Mod 760 Engineering Docs]] | |||
* [[Media:Tek 515a mod 101k.pdf|Tektronix 515A Mod 101K]] | |||
* [[Media:040-140.pdf|Tektronix 515 Mod K515-DC1 (DC fan motor)]] | |||
}} | }} | ||
The '''Tektronix 515''' is a 15 MHz single-trace all-tube oscilloscope [[introduced in 1955]]. | The '''Tektronix 515''' is a 15 MHz single-trace all-tube oscilloscope [[introduced in 1955]]. | ||
It does not use plug-ins. | It does not use plug-ins. | ||
A rack-mount version, the RM15 was also sold. | A rack-mount version, the RM15 was also sold. | ||
There is also a 515A (serial numbers 101 through 1000 are "Type 515", 1001 and upward are "Type 515A"). | |||
The 515A has a Z-axis input and slightly higher vertical sensitivity than the 515. | The 515A has a Z-axis input and slightly higher vertical sensitivity than the 515. | ||
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==Internals== | ==Internals== | ||
The HV power supply uses three [[5642]] rectifiers to produce + | The HV power supply uses three [[5642]] rectifiers to produce +2,325 V for the CRT anode and −1,675 V for the CRT cathode. | ||
and | The LV power supply is linear, using a [[6080]] tube as the pass tube of the series regulator for +300 V and +100 V supply. | ||
the pass tube of the series regulator for +300 V and +100 V supply. The | The −150 V supply is regulated by a [[6AU5]] tube. The voltage reference for the −150 V supply is a [[5651]] tube. | ||
regulated by a [[6AU5]] tube. The voltage reference for the | |||
tube. The 515 and 515A use [[selenium rectifiers]]. A kit was later made available | The 515 and 515A use [[selenium rectifiers]]. A kit was later made available for converting them to silicon rectifiers for improved reliability. | ||
for converting them to silicon rectifiers for improved reliability. | Starting at serial number 4424, the 515A used the [[120-142]] power transformer, the same part that is used in the [[516]]. | ||
The vertical amplifier is fully differential, DC-coupled, and all tube. The stages are as follows: | The vertical amplifier is fully differential, DC-coupled, and all tube. The stages are as follows: | ||
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Tek rm15 right controls.jpg|RM15 | Tek rm15 right controls.jpg|RM15 | ||
Tek rm15 rear.jpg|RM15 rear | Tek rm15 rear.jpg|RM15 rear | ||
Tek 515a cal trace.jpg|515A | |||
Tek 515a 34.jpg|515A | |||
Blue tek 515a.jpg|Blue 515A | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|515}} | |||
{{Parts|515A}} | |||
[[Category:Monolithic tube scopes]] | [[Category:Monolithic tube scopes]] | ||