TNP #30 - Agilent 4349B 4-Channel High Resistance Meter Teardown, Repair & Experiments
In this episode Shahriar “repairs” an HP/Agilent 4349B 4-channel high-resistance meter capable of measuring up to 10^15 Ohms! The instrument has four independent channels and requires an external power supply for measurements.
The instrument does not boot, but unplugging and re-plugging the cables fixes this issue. After some analysis of the theory of operation, a 1G-Ohm resistor is used for performance verification. The resistor is also measured against the Keysight & Keithley 8.5-digit/7.5-digit multimeters as well as the Keithley 2470 1000V SMU.
http://www.TheSignalPath.com
http://www.YouTube.com/TheSignalPath
http://www.Patreon.com/TheSignalPath
Leave a Reply