I have a Datron 1281 DMM. How to set the bias current adjustment (R222)? How to set the offset null adjustment (R317)? Thanks, John Staron

offset looking at the schematics on page 11.2-3 the bias should be adjusted by shorting the inputs of the amplifier and then a zero output. biasshorting the external input and measure the output of the amplifier i could not find the internal adjustments in the manual.  Met vriendelijke groeten Regards Frans http://ElectronicsAndBooks.com Netherlands Discere ne cesses From: "starbook@uplink.net" <starbook@uplink.net> To: Discussion of precise voltage measurement <volt-nuts@febo.com> Sent: Saturday, May 23, 2015 10:39 AM Subject: [volt-nuts] Datron 1281 offset null, Bias current adjustments I have a Datron 1281 DMM. How to set the bias current adjustment (R222)? How to set the offset null adjustment (R317)? Thanks, John Staron _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.