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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

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Old 23rd Nov 2014, 10:59 am   #1
Harriman
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Default Help identifying a keyboard

Hi all,

Can anyone please tell me what is the keyboard of this fourier analyser?
The control unit below is a HP 5475A and there is a HP 5466A Analog to Digital at the left... so I guess the keyboard is probably a HP something
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Old 24th Nov 2014, 11:31 am   #2
peter_scott
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Default Re: Help identifying a keyboard

Yes, the whole system including the keyboard is HP and has model number 5451A.

Three speeds of Real Time Analysis were offered with the 5451A. Optional 5470A FFT Processor and 5471A FFT Arithmetic Unit gave power spectrum calculations to 18kHz and 20kHz respectively, with the standard 5451A giving real time calculation to 375Hz.

Peter

Last edited by peter_scott; 24th Nov 2014 at 11:48 am.
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Old 24th Nov 2014, 11:37 am   #3
Harriman
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Default Re: Help identifying a keyboard

Yeah, I knew the model of the furier analyser, I'm looking for only the keyboard
Or at least find a close-up photo of it.

Last edited by Harriman; 24th Nov 2014 at 12:01 pm.
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Old 24th Nov 2014, 12:01 pm   #4
peter_scott
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Default Re: Help identifying a keyboard

See: www.hpl.hp.com/hpjournal/72jun/jun72a4a.pdf
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Old 24th Nov 2014, 12:09 pm   #5
Harriman
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Default Re: Help identifying a keyboard

Thank you, it looks interesting. So apparently the keyboard has been designed specifically for this analyser.
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Old 24th Nov 2014, 12:49 pm   #6
peter_scott
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Default Re: Help identifying a keyboard

That would be my understanding too.

I don't know, but you might get a view of it in Application Note 140-1.

Peter
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