[GreenKeys] 1khz reference tone...

[Jeffrey D Angus]

On 6/6/2017 8:23 AM, Kenneth Gartland wrote:
> I wud like to calibrate an HP3551 test set, as I don't
> have an alternate audio oscillator I can use to check it...
Note that Ken wants an ACCURATE source for calibration.
<https://www.testequipmentconnection.com/images/products/HP_3551A.JPG>
I have one of these as well, along with it's big brother the 4970A
Transmission Impairment Measurement System.
<https://accusrc.com/uploads/images/img3821.jpg>

Their inherent accuracy is probably better than any source you find on
line or software for a sound card.


-- 
Jeff-1.0
wa6fwi
http://www.foxsmercantile.com


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