Agilent 5991-2788EN English 2014-08-02 PDF 355 KB c20141029 [6] free download

File name 5991-2788EN English _ 2014-08-02 _ PDF 355 KB c20141029 [6].pdf

Keysight Technologies Achieve Accurate Resistance Measurements with the 34980A Multifunction Switch Measure Unit Application Note Abstract When you make multiple resistance measurements, accuracy can be improved with compensation and control. This is particularly true when resistance values being measured become very small or when small changes in resistance need to be detected. This Application Note offers several options to help you make accurate low resistance measurements. It provides a basic overview of how to ensure accurate 2-wire, 3-wire and 4-wire measurements with the Keysight 34980A Multifunction Switch/ Measure unit with built-in digital multimeter (DMM) and a plug-in multiplexer module. 03 | Keysight | Achieve Accurate Resistance Measurements with the 34980A Multifunction Switch Measure Unit - Application Note Multiplexer relay The Challenge of Two-Wire Resistance S+ RR RL Measurements V+ Two-wire resistance measurements are the simplest to make. After all, what test engineer has not picked Isource R unknown up a handheld ohm meter to make this measurement? This basic concept can be extended to making multiple RR RL V- measurements by using a 2-wire multiplexer such as the Keysight 34980A Multifunction Switch/Measure unit with built-in DMM and a 2-wire multiplexer module like the S- 34921A or the 34922A. Figure 2. Two-wire technique where RR is the relay contact The drawing at Figure 2 shows an unknown resistance resistance and RL is the lead resistance. R is the resistance to be measured. connected to an ohm meter through a multiplexer and a length of wire. In addition to the unknown resistance 2 Wire Error