Dr. David Kirkby Ph.D CEng MIET Kirkby Microwave Ltd Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, Essex, CM3 6DT, UK. Registered in England and Wales, company number 08914892. http://www.kirkbymicrowave.co.uk/ Tel: 07910 441670 / +44 7910 441670 (0900 to 2100 GMT only please)
On 4 January 2017 at 14:06, David C. Partridge < david.partri...@perdrix.co.uk> wrote: > Time to call your supply co. > > Dave > I think I'll wait a few more days and collect some more data. I'm just too close to the upper limit to be confident it is not the uncertainty in my instruments. I'd also feel a bit happier if the meter was not 20 years old and had a valid calibration certificate. I just phoned Tektronix and they want £160 (GBP) + VAT to calibrate this 6000 count handheld DMM. Ouch. I will not bother with that. Keysight are quoting $210.00 (USD) to do a 6.5 digit 3457A. That's more attractive, but a 3457A is not really suited to logging data next to an electricity meter. It is just not practical to get a GPIB connection there. Dave > > -----Original Message----- > From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dr. > David Kirkby (Kirkby Microwave Ltd) > Sent: 04 January 2017 13:42 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Line Voltage - USA > > I measured my voltage overnight in a peak hold at 255.10 V RMS as close to > the meter as I could. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.