NI CSM-200MA is the catalog form of the official NI model name CSM-200mA, a current shunt module intended to extend current measurement capability for compatible DMM-based systems. NI identifies it as part of the CSM current shunt module family and distinguishes it from the separate CSM-10A variant. The module is described by NI as working with Digital Multimeter Devices, PXI Digital Multimeters, and other compatible third-party DMMs, making it an accessory module rather than a primary instrument.
For the 200 mA version, NI specifies a nominal current shunt rating of 200 mA with a 1 Ω sense resistor and a conversion factor of 100 mV = 100 mA. Maximum working current from HI to LO is 200 mA. NI lists DC to 25 kHz accuracy of ±0.075%, a 20 ppm/°C sense resistor temperature coefficient, and 325 mV burden voltage, which are the key electrical characteristics for integrating the shunt into precision current measurement setups.
The CSM-200mA uses 0.75 in. (19 mm) banana jack spacing. NI specifies a 500 mA, 250 V, 5 × 20 mm quick-acting fuse and states maximum working voltage of 250 V from HI to earth ground and 250 V from LO to earth ground, both in Installation Category II. Environmental limits include 0 to 55 °C operating temperature, −55 to 150 °C storage temperature, 5 to 90% RH noncondensing humidity, maximum altitude of 2,000 m, and pollution degree 2 for indoor use only.
