Ed_Gee wrote:
NRALIFR - the error code was E7 ... high frequency. Not sure if my DVM will measure frequency.... will check and then keep this in mind...
Some will. some won't and the Kill-A-Watt meter is what about 30 bucks, it's about a kilo-buck worth of meters in one box
Voltage
Frequency
Volt-amps
Watts (NOTE these last two are not the same thing)
Power factor (That's the relationship between watts and V-A)
Kilowatt hours
And I think one more (not sure without going to kitchen
I mentioned power line noise up thread. the PI unit might be more or less senistive to power line noise than either the Kill-a-watt or a DVM with the ability to measure frequency (I have some that do and some that don't by the way)
A 'scope is the only real way to be sure when you get multiple devices giving different info
Of course the final option is bad Surge Guard. but not ready for that yet.
