General Description. The 477-200 is a customized version of the 478-series of audio level measuring instruments. It is member of a family of instruments designed to take up the heritage of the previous 477-series PPM´s. The prime function of this 477-200 series is to measure the peak level of a digital audio signal. Based upon one of today’s most powerful DSP’s it offers all of its predecessors appreciated qualities like a bright, high definition bar graph display with a multitude of display modes.
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13. DC-warning. Any DC content in the audio signal is deliberately filtered out and will not affect the reading. The DC LED will however indicate if abnormal DC levels are present in the audio signal. 14. Overload LED. Overload indication, left channel. 15.
Terminal connections. Digital (AES3) input and output. XLR – female XLR - male. PUS H Screen 1. Screen Digital input + 2. Digital output + Digital input - 3. Digital output - The XLR – male connector facilitates a passive loop-through of the AES signal to other apparatus. Hence the instrument is fitted with a switch able input termination.
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Remote Control. All the functions of the front buttons are available through the 9pole D connector remote control connector. Previous users of the NTP477-series instrument will find the same possibilities in this 477-100 series although the needed external connections have changed. In addition to the remote control of operating functions (i.e.
Remote Control input 4 (RC#4) This input is designed to substitute all the functions also accessible as push buttons on the front of the instrument. The remote switches must have momentary action and a series resistor according to table 3 must be used. The switches “common side”...
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