Noise travels along communication wires and power lines using different paths, and problems with signal error and incorrect operation of machines caused by noise have been on the rise. By applying just the 9741 Clamp On Voltage Sensor, you can use the 3144-20 to decipher the frequency range and invasion path of the noise.

Use the logging function for long-term monitoring, and transfer the recorded data to a PC via the USB interface for graphic display and printer output.

The 3144-20 separates noise in the 500 Hz to 30 MHz range into 7 ranges for measurement, and then displays the measurement voltage of each frequency range on the level meter. Measurement can start by simply attaching the 9741 Clamp-on Voltage Sensor to the measurement line. Noise level can be easily monitored in the live line state without the need to peel off the insulation of the line. In addition, external signals (output from an antenna or near magnetic field probe) other than that from the 9741 can be input from the BNC terminal. Like the 9741, their level at each frequency range can be checked and recorded.