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The Tektronix 515 is a | {{Oscilloscope Sidebar | | ||
title=Tektronix 515| | |||
summary=15 MHz Tube scope | | |||
image=515a trace.jpg | | |||
caption=Tektronix 515 front | | |||
introduced=1955 | | |||
discontinued=(?) | | |||
manuals= | |||
* [http://w140.com/mmm/tek-515.pdf Tektronix 515 Manual (PDF)] | |||
* [http://w140.com/tek_fcp/tek_type_515a_factory_cal_proc.pdf Tektronix 515A Factory Calibration Procedure, May 1960 (PDF)] | |||
* [[Media:tek_515a_fcp.pdf|Tektronix 515A Factory Calibration Procedure, May 1960 (PDF, OCR)]] | |||
* [[Media:Tek 515a fcp dec 1968.pdf | Tektronix 515A Factory Calibration Procedure, December 1968 (PDF, needs OCR)]] | |||
* [[Media:Tek 515a mod 760a.pdf|Tektronix 515A Mod 760A]] | |||
}} | |||
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 | |||
There is also a 515A. | A rack-mount version, the RM15 was also sold. | ||
The HV power supply uses | There is also a 515A (serial numbers 101 through 1000 are "Type 515", 1001 and upward are "Type 515A"). | ||
and - | |||
the pass tube of the series regulator for + | The 515A has a Z-axis input and slightly higher vertical sensitivity than the 515. | ||
regulated by a [[6AU5]] tube. The voltage reference for the - | Maximum vertical sensitivity is 100 mV/Div for the 515 and 50 mV/Div for the 515A. | ||
The [[516]] is essentially a dual-trace version of the 515. | |||
The 515 and 515A are fan-cooled, both in benchtop and rackmount forms. | |||
{{BeginSpecs}} | |||
{{Spec | Channels | One vertical channel (two input connectors and a switch to select) }} | |||
{{Spec | Bandwidth | DC to 15 MHz }} | |||
{{Spec | Rise time | 23 ns }} | |||
{{Spec | Deflection | 50 mV/div to 20 V/div (515A), 100 mV/div to 50 V/div (515) }} | |||
{{Spec | Sweep | 0.2 μs/div to 2 s/div }} | |||
{{Spec | CRT | [[T55|T55 CRT CRT]], P31 [[phosphor]] standard, 6 cm linear vertical deflection }} | |||
{{Spec | Input impedance | 1 MΩ // 30 pF }} | |||
{{Spec | Power consumption | 275 W }} | |||
{{Spec | Weight | 40 pounds (18 kg) }} | |||
{{EndSpecs}} | |||
==Links== | |||
* [http://www.museum-nt.de/objekte/tek_515a.html Tek 515A] @ museum-nt.de | |||
* [https://www.youtube.com/watch?v=5OeEwtCBuYI Tektronix 515A checkout] @ youtube.com | |||
==Internals== | |||
The HV power supply uses three [[5642]] rectifiers to produce +2325 V for the CRT anode | |||
and -1675 V for the CRT cathode. 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 -150 V supply is | |||
regulated by a [[6AU5]] tube. The voltage reference for the -150 V supply is a [[5651]] | |||
tube. The 515 and 515A use [[selenium rectifiers]]. A kit was later made available | tube. 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 | The vertical amplifier is fully differential, DC-coupled, and all tube. The stages are as follows: | ||
stages are as follows: | |||
* input buffer, cathode followers, [[6AU6]] | * input buffer, cathode followers, [[6AU6]] | ||
| Line 24: | Line 65: | ||
The trigger is a 6DJ8 differential trigger amplifier followed by a 6DJ8 Schmitt trigger. | The trigger is a 6DJ8 differential trigger amplifier followed by a 6DJ8 Schmitt trigger. | ||
==Pictures== | |||
<gallery> | |||
rm15_1.jpg|RM15 front view | |||
rm15_2.jpg|RM15 side view | |||
Tek 515 vertical path.png|Vertical signal path | |||
rm15_3.jpg|RM15 top view | |||
rm15_4.jpg|RM15 bottom view | |||
Tek 515a 1.jpg|515A | |||
Tek 515a 2.jpg|515A | |||
Wellenkino 515a.jpg|515A | |||
Tek 515a right.jpg|515A Left internal view | |||
Tek 515a hvps 4.jpg|515A CRT circuit | |||
Tek 515a hvps 3.jpg|515A HV power supply | |||
Tek 515a hvps 2.jpg|515A HV power supply | |||
Tek 515a hvps 1.jpg|515A HV power supply | |||
Tek-rm15 DxO.jpg | |||
Tek 515a trace2.jpg|515A | |||
Tek 515a left internal.jpg|515A left internal | |||
Tek 515a right internal.jpg|515A right internal | |||
Tek 515a s1 1.jpg|515A S1 | |||
Tek 515a s1 2.jpg|515A S1 | |||
Tek 515a s1 3.jpg|515A S1 | |||
Tek 515a s1 4.jpg|515A S1 | |||
Tek 515a s1 5.jpg|515A S1 | |||
Tek rm15 inside.jpg|RM15 | |||
Tek rm15 inside2.jpg|RM15 | |||
Tek rm15 left controls.jpg|RM15 | |||
Tek rm15 right controls.jpg|RM15 | |||
Tek rm15 rear.jpg|RM15 rear | |||
Tek 515a cal trace.jpg|515A | |||
Tek 515a 34.jpg|515A | |||
Blue tek 515a.jpg|Blue 515A | |||
</gallery> | |||
[[Category:Monolithic tube scopes]] | |||