PMEL Forum

K Sections => K1/8 - DC/Low Frequency => Topic started by: USMCPMEL on 09-08-2011 -- 08:15:50

Title: is it possible to calibrate Bias on a LCR meter
Post by: USMCPMEL on 09-08-2011 -- 08:15:50
I have a customer telling me he thinks there is something wrong with the DC bias on his Agilent 4263B LCR meter. I do not even know how to check that? Any ideas?  :?
Title: Re: is it possible to calibrate Bias on a LCR meter
Post by: Hawaii596 on 09-08-2011 -- 13:40:19
I have the PDF of the op manual. You just jumper using BNC cables between the sense and current, then measure high versus low using an HP 3458A at 0, 1.5 and 2 V (and negative of those).  The spec is +/-5% +2 mV.
Title: Re: is it possible to calibrate Bias on a LCR meter
Post by: USMCPMEL on 09-09-2011 -- 06:37:49
I have the 16089B Kelvin clip leads box that you use to take the measurements. I would have thought you could just hook it up to a meter?
Title: Re: is it possible to calibrate Bias on a LCR meter
Post by: Hawaii596 on 09-09-2011 -- 06:48:41
According to the procedure in OEM manual, and the way I have done them over the years is with BNC T connectors between current and sense.  Using Kelvins might work, but I haven't tried it that way.
Title: Re: is it possible to calibrate Bias on a LCR meter
Post by: USMCPMEL on 09-09-2011 -- 10:17:53
Only problem is I am limited on my connectors...
Title: Re: is it possible to calibrate Bias on a LCR meter
Post by: Hawaii596 on 09-09-2011 -- 16:28:08
I would think if you used Kelvin clip leads connected to some short pieces of solid copper wire connected into the input terminals of an HP 3458A (or adequate DMM), that should work good enough for that measurement.  Set to the settings in the earlier post and see what you get.
Title: Re: is it possible to calibrate Bias on a LCR meter
Post by: USMCPMEL on 09-10-2011 -- 16:33:20
Got it. Thanks Hawaii. I ended up doing a reset to factory due to some poroblems I was having. Everything seems to be working fine now.