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Dr David Kirkby,

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I am familiar with calibration and reports having run a NATA accredited radio communications test laboratory.

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I did not look at all of the report and I don’t know how long it should be for your instrument, but some of the figures are strange. ?

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Refer sample of the pdf - copied example below

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Familiar calibration report form aspects

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·???????? Set up Test frequency/test signal (obviously input test signal)??

·???????? Minimum and Maximum ( The minimum and maximum acceptable range of tolerance for the measuring instrument under test to be in calibration)

·???????? Measured value – the result of the calibration measurement reported within the tolerance range in the format of the report.

·???????? Measurement uncertainty – the accuracy of the measurement that the laboratory can state with 95% confidence against the international standard.

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But see below at 1MHz the range of “acceptable” variation seems unreasonably excessive.? 6.42V is a +28% increase above 5V? I would have thought your instrument would need to be more accurate than that.

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Regards Noel

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Normally you

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From: [email protected] [mailto:[email protected]] On Behalf Of Dr. David Kirkby from Kirkby Microwave Ltd
Sent: Monday, 1 October 2018 8:33 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Calibration of 4285A Precision LCR meter 75 kHZ to 30 MHz. 0.1%

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