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515: Difference between revisions
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The Tektronix 515 is a | 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 rackmount version, the RM15 was also sold. | |||
There is also a 515A. | A rackmount version, the RM15 was also sold. There is also a 515A. | ||
The HV power supply uses | |||
and - | The HV power supply uses three [[5642]] rectifiers to produce +2325 V for the CRT anode | ||
the pass tube of the series regulator for + | and -1675 V for the CRT cathode. The LV power supply is linear, using a [[6080]] tube as | ||
regulated by a [[6AU5]] tube. The voltage reference for the - | 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. | ||
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]] | ||
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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. | ||
The maximum vertical sensitivity is | The maximum vertical sensitivity is 100 mV/div for the 515 and 50mV for the 515A. | ||
The [[516]] is essentially a dual-trace version of the 515. | The [[516]] is essentially a dual-trace version of the 515. | ||
The 515 and 515A use the [[T55|T55 CRT CRT]]. | The 515 and 515A use the [[T55|T55 CRT CRT]]. P31 [[phosphor]] was standard. | ||
P31 [[phosphor]] was standard. | |||
Serial numbers 101 through 1000 are "Type 515". | Serial numbers 101 through 1000 are "Type 515". | ||
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File:Tek rm15.jpg | File:Tek rm15.jpg | ||
</gallery> | </gallery> | ||
[[Category:Tube scopes]] | |||