Ken, Coincidently, I just recalibrated a pair of 3456A meters I have been running 24/7 for over a year.
10 V and 1 V ranges were no problem with adjustment pots having very good resolution. 1 K, 10 K, and 100 K pots were a little more fiddly. I used 10 PLC averages for setting the pots, and then 100 PLC to re-check the setting was within 1 count. Reading stability on these ranges with 100 PLC was 1 count, or less. -- Chuck -----Original Message----- From: volt-nuts [mailto:[email protected]] On Behalf Of Ken Goodhew Sent: Thursday, April 30, 2015 1:52 PM To: [email protected] Subject: [volt-nuts] hp 3456a ohms calibration I have been trying to check the calibration of my HP3456A multimeter. I can check and set the DC volts calibration ok but when I try and set the ohms calibration using standard resistors I cannot get a steady reading as the display varies by several digits regardless of the value of the resistance being used to check the meter. I have already changed most of the power supply filter capacitors to see if this solved the problem, which it did not. The only capacitors I have not changed are the two larger ones that tested ok for capacitance and esr. Any suggestions as what the problem may be or where I am going wrong in my calibration attempts? Thanks, Ken Goodhew. VK2TKE. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
