The 1521 Autoscan True RMS AC power line analyzer is a state-of-the-art instrument, ideal for providing all the necessary information about any electrical load connected to the AC line. It monitors/scans sequentially all electrical parameters, i.e., voltage, current, power, VA, power factor & line frequency, thus providing a clear picture of the load. Superior accuracy & reliability is achieved through advanced DSP techniques.

User operation is very simple. The load that is to be monitored is connected to the 'Line Output' Socket provided on the front panel of the instrument. The 1521 is then connected to the AC line. All the parameters are then displayed on the front panel of the instrument. 

Data logging is achieved via remote communication using the standard RS-232 interface. Through this feature, the user can control the instrument through a PC. This is possible by making use of a set of software commands, details of which are explained fully in the instruction manual.