Author Topic: LTZ1000CH or LTZ100ACH  (Read 1969 times)

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Offline Andreas

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Re: LTZ1000CH or LTZ100ACH
« Reply #25 on: April 17, 2019, 05:31:07 am »

It's interesting to see how you measure the drift - so you are using an LTC2400 ADC.
This is always a bit of a puzzle for me, how do you measure something that is so accurate to start with - apart from asking someone at NPL to check it ;)

Hello,

I am actually measuring the drift of the LTC2400 based ADC (ADC#13) by comparing it to the more stable LTZ1000.

Of course you can also compare different LTZ1000s against each other (relative drift) if you have enough resolution (e.g. by using a 6.5 digit DMM in 100 mV range and measure the difference).

For absolute measurements I calibrate my LTZs from time to time against traceable calibrated instruments to see the absolute drift.

with best regards

Andreas
 


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