J
Joerg
- Jan 1, 1970
- 0
Hello Folks,
This was a surprise. Did the usual calibration ritual on the HP4191.
Then a sanity check with precision parts and, oops, it's off. Turned out
the 50ohm cal resistor "HP909A" is high, 52.5ohms instead of 50.
Ok, it's over 20 years old by now but considering that it is a really
expensive precision machined sealed unit with gold cover and all I
thought this ain't supposed to happen. Or is it?
Regards, Joerg
This was a surprise. Did the usual calibration ritual on the HP4191.
Then a sanity check with precision parts and, oops, it's off. Turned out
the 50ohm cal resistor "HP909A" is high, 52.5ohms instead of 50.
Ok, it's over 20 years old by now but considering that it is a really
expensive precision machined sealed unit with gold cover and all I
thought this ain't supposed to happen. Or is it?
Regards, Joerg