Special Features:

30 light indicators on front panel, inscribed ds1 through ds30, arranged in six rows;

Properties:

An indicator which displays incremental information derived from discrete electronic signals from another item, such as a computer, on the face of a cathode ray tube, or by means of gaseous discharge type lamps which are part of a decade counting device. The displayed data may be in the form of letters, numerals, symbols, or any combination thereof. For liquid crystal displays or semiconductor type, see also display, optoelectronic. Excludes annunciator and alarm (as modified). See also counter, electronic, digital; indicator, symbol indicating; and voltmeter.