New product applications: Digital-transmission-line test set is also a multimeter, is battery charged, and is portable

A digital-transmission multimeter is designed primarily for telephone communications applications, but can also be used for operations requiring a general-purpose multimeter. The model 430 combines the functions of a frequency counter, a noise and level test set, a capacitance bridge, and a decade box with voltmeter functions. The instrument has built-in voice and program filters.