high Resolution LED Peak Program Meter with 60 LED's,
The high impedance audio input of the meter is electronically balanced. An internal trim pot allows to change the default level setting of 0 dB = 6 dBu ~ + 4 dBV in a range of +/- 10 dB. The display range up to + 15 dB covers the common input and output levels of a/d and d/a converters.
The display covers the range from + 15 dB to - 50 dB with 60 LED's. The resolution is 1 dB from + 15 dB to - 20; however, the range between + 5 and - 5 dB offers a higher resolution of 0.5 dB. Between - 20 dB and - 40 dB, the resolution is 2 dB and down to the lowest level of - 50 dB the resoltuion is 2.5 dB. The attack time is less than 0.5 ms @ 1 kHz and the internally adjustable release time is 1.5 sec/20 dB. The release law is linearized to achieve constant speed at low levels. The meters read the quasi peak value in accordance to DIN45405, but the attack time is adapted to the needs for using these meters with digital converters. The polarity error is less than 0.25 dB.
The U771 high resolution PPM is a single slot V700 standard module that fits into V700 standard frames.