THIS IS DEVICE IS IN A GREAT CONDITION . FOR EMC TESTING IN THE RANGE OF 1HZ TO 20MHZ. DOES NOT NEED AN EMC PROBE IT HAS BUILT IN PROBE.YOU CAN ADD YOUR OWN PROBE TO THE BNC INPUT. INPUT CAN READ FROM VOLTS TO PICA VOLTS .COMES WITH MANUAL.CAN HOOK UP TO COMPUTER WITH USB CABLE .INCLUDED IN PHOTO IS ITS COMPUTER PROGRAM SCREENSHOT. GO TO THE AARONIA WEBSITE FOR MORE INFO. the device can be calibrated by aaronia usa.