ETS-Lindgren's Model 3701 Line Probe is based on the FCC specified design for a line probe measuring conducted emissions in the frequency range of 10 kHz to 30 MHz. Its principal application as per ANSI C63.4-2009 is for those situations where the line current is too great for the use of a LISN.
For operation, the probe is attached to the bare conductor carrying power to the equipment under test. A female BNC coaxial connector is located at the base of the probe for connecting the probe to the test equipment. For multiple phase equipment, the probe can be quickly detached from one line and attached to another. The unit is constructed of brass, delrin and line phenolic.
ETS-Lindgren warrants its LISNs and PLISNs to be free from defects in material or workmanship for two years. Annual recalibration is recommended.