Author Topic: New (to me) HP3458A reference  (Read 9780 times)

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Offline VintageNutTopic starter

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Re: New (to me) HP3458A reference
« Reply #25 on: November 12, 2016, 11:59:41 pm »
Not a suitable one :) Lowest range is 20mV with P6245 probes.

10X probes are for high frequency cowboys. Use coax, change the probe multiplier setting to 1X and now you have 10X better flicker noise measurement capability.  I am certain you already knew that.

Your scope goes for $2k - $3k on ebay. It was a big deal in its day.



 
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Offline TiN

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Re: New (to me) HP3458A reference
« Reply #26 on: November 13, 2016, 06:37:15 pm »
That trick does not work here, because scope has high-frequency custom TekConnect ports, not the usual BNC's. This means only DC coupling and only 50 Ohm input.
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