HP 3468 voltmeter with HP-IL

[Artur - Brasil]

(06-15-2015 09:25 AM)isanchez Wrote:  Hi,

I have replaced the batteries in one 3468 and one 3478 (I have put a battery holder and a removable 3V photo battery)..now I am facing how damm to calibrate them...quite difficult even after reading the manteinance manuals...

I have a doubt (well many!) about the callibartion process: Is it necessary to complete the whole callibration process in one session (voltage, current, resistance, etc.), or it can be done partially and done by phases?

Thanks in advance
Best regards

Ignacio

Ignacio, on page 4-12 of service manual, item r, you can read that if you have done one calibration of any constant, you can interrupt the process - of course, if there was a considerable adjustment on that constant and it is used for other measurements, like DC adjustments, you may have erroneous measurings on these other measurements.
Be sure your sources for calibration are very, very stable.
You can get excellent sources from Ebay, like standard resistors and DC sources.
Best wishes from Brazil.
Artur