The NTP 477/500A is a stereo plasma Bar Graph with peak & correlation metering with a Danner A1 cassette module. This used unit is in the horizontal scaling.
FEATURES
PPM for Digital Audio. High resolution 200 segment orange bar-graph display. Advanced Dual-Mode Display. Built-in three color LED compatibility meter (477-400 only). Selectable Reference level. Selectable „freezing“ of Spot for peak-hold indication. Built-in Highpass filter for DC blocking. Individual overload indicators. Additional gain function. Resetable memory for storing of maximum reading. 32/44.1/48 kHz sampling-rate and pre-emphasis indicators. Conforms to N10-D standard. (oversampling via DSp gives correct level even at ¼ sample frequency e.g. 12 kHz).
The input connects directly to the Serial Digital Audio Signal, as described in the EBU 3250, IEC 958 and AES3 standards. This instrument combines the scale of the „absolute“ type, meaning that the scale maximum (marked „0“) corresponds to maximum digital code level, with the scale for analog PPM, which adheres to IEC 268-10 standards. In this way, it enables a Sound Engineer, working in a mixed analog and digital environment, to make direct comparison between audio signals. They are available with a variety of most commonly used scale types, such as DIN, BBC and Nordic.
