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524: Difference between revisions
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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | | ||
title=Tektronix 524 | | title=Tektronix 524 | | ||
summary=TV scope | | summary=TV waveform monitoring scope | | ||
image=Tek 524 trace.jpg | | image=Tek 524 trace.jpg | | ||
caption=Tek 524 | | caption=Tek 524 | | ||
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* [http://bama.edebris.com/download/tek/524ad/Tek%20524AD.pdf Tektronix 524AD Manual (PDF)] | * [http://bama.edebris.com/download/tek/524ad/Tek%20524AD.pdf Tektronix 524AD Manual (PDF)] | ||
}} | }} | ||
The '''Tektronix 524''' is an oscilloscope [[introduced in 1953]] for monitoring television waveforms. It is a monolithic oscilloscope. | The '''Tektronix 524''' is an oscilloscope [[introduced in 1953]] for monitoring television waveforms. It is a monolithic oscilloscope. It was designed by [[Cliff Moulton]]. | ||
Interestingly, the 524 appears on page 33 of the [http://www.americanradiohistory.com/Archive-Catalogs/RCA-Test-Equip-1966.pdf 1966 RCA Test Equipment Catalog]. | Interestingly, the 524 appears on page 33 of the [http://www.americanradiohistory.com/Archive-Catalogs/RCA-Test-Equip-1966.pdf 1966 RCA Test Equipment Catalog]. | ||
{{MissingSpecs}} | |||
The 524 weighs 61 pounds, uses 500 watts, and has a [[thermal cutoff]]. It uses [[selenium rectifiers]] in the low-voltage | The 524 weighs 61 pounds, uses 500 watts, and has a [[thermal cutoff]]. It uses [[selenium rectifiers]] in the low-voltage | ||
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but P7 and P11 phosphors were also available. | but P7 and P11 phosphors were also available. | ||
==Internals== | |||
The vertical signal path of the 524 is similar to that of the [[514]]. | The vertical signal path of the 524 is similar to that of the [[514]]. | ||
They have similar front-ends and similar [[distributed amplifier|distributed vertical output amplifiers]]. | They have similar front-ends and similar [[distributed amplifier|distributed vertical output amplifiers]]. | ||
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most importantly, a non-retriggerable multivibrator. | most importantly, a non-retriggerable multivibrator. | ||
The multivibrator is triggered by the vertical sync of the NTSC waveform. | The multivibrator is triggered by the vertical sync of the NTSC waveform. | ||
After being triggered, it is not triggerable again for about about | After being triggered, it is not triggerable again for about about 25 ms, so it | ||
misses the vertical sync of the next interlaced field and instead triggers on | misses the vertical sync of the next interlaced field and instead triggers on | ||
the vertical sync of one following that. So it consistently shows the "even" field | the vertical sync of one following that. So it consistently shows the "even" field | ||