515: Difference between revisions
No edit summary |
|||
| (8 intermediate revisions by 3 users not shown) | |||
| Line 8: | Line 8: | ||
manuals= | manuals= | ||
* [http://w140.com/mmm/tek-515.pdf Tektronix 515 Manual (PDF)] | * [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 (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]]. | 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. | ||
| Line 22: | Line 27: | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Channels | | {{Spec | Channels | One vertical channel (two input connectors and a switch to select) }} | ||
{{Spec | Bandwidth | DC to 15 MHz }} | {{Spec | Bandwidth | DC to 15 MHz }} | ||
{{Spec | Rise time | 23 ns }} | {{Spec | Rise time | 23 ns }} | ||
| Line 44: | Line 49: | ||
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 stages are as follows: | The vertical amplifier is fully differential, DC-coupled, and all tube. The stages are as follows: | ||
| Line 88: | Line 95: | ||
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> | ||
[[Category:Monolithic tube scopes]] | [[Category:Monolithic tube scopes]] | ||
Revision as of 11:10, 22 June 2020
The Tektronix 515 is a 15 MHz single-trace all-tube oscilloscope introduced in 1955. It does not use plug-ins.
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. 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.
Key Specifications
| Channels | One vertical channel (two input connectors and a switch to select) |
|---|---|
| Bandwidth | DC to 15 MHz |
| Rise time | 23 ns |
| Deflection | 50 mV/div to 20 V/div (515A), 100 mV/div to 50 V/div (515) |
| Sweep | 0.2 μs/div to 2 s/div |
| CRT | T55 CRT CRT, P31 phosphor standard, 6 cm linear vertical deflection |
| Input impedance | 1 MΩ // 30 pF |
| Power consumption | 275 W |
| Weight | 40 pounds (18 kg) |
Links
- Tek 515A @ museum-nt.de
- 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 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:
- input buffer, cathode followers, 6AU6
- first gain stage, differential amplifier, T-coil, 12BY7
- unity gain buffer, cathode follower, 6DJ8
- output amplifier, differential amplifier, T-coil, 6CL6
The horizontal amplifier uses half of a 6DJ8 as a buffer, followed by a 6DJ8 as a differential amplifier and phase splitter, followed by the two halves of another 6DJ8 as the output cathode followers driving the horizontal CRT deflection plates.
The trigger is a 6DJ8 differential trigger amplifier followed by a 6DJ8 Schmitt trigger.
Pictures
-
RM15 front view
-
RM15 side view
-
Vertical signal path
-
RM15 top view
-
RM15 bottom view
-
515A
-
515A
-
515A
-
515A Left internal view
-
515A CRT circuit
-
515A HV power supply
-
515A HV power supply
-
515A HV power supply
-
-
515A
-
515A left internal
-
515A right internal
-
515A S1
-
515A S1
-
515A S1
-
515A S1
-
515A S1
-
RM15
-
RM15
-
RM15
-
RM15
-
RM15 rear
-
515A
-
515A
-
Blue 515A
