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  • Fredenstein U70F-

Fredenstein U70F

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Product Description

U70F 2ÔÇÉchannel Peak Programme Meter (PPM). 

The name is an homage to the first PPM meter called U70, a tube based system developed and manufactured in Germany in the early 50s. The Fredenstein U70F is the LED Peak-Program-Meter with simultaneous RMS indication. Each channel uses 60 LEDs for an impressive detailed display.

There are two ranges: -39 to +20dB at 1 dB resolution or -19.5dB to +10dB at 0.5dB resolution. There is also a switchable peak hold function with 2.5 second or indefinite hold (manual reset). There are also 4 dot and bar display modes that make sense visually. The meter ballistics were also carefully chosen with familiarity being a key factor.
The back panel features XLR inputs with “pass-thru” XLR outputs, to simplify wiring (no “Y” cables). It is available as a desktop unit or as a rack-mountable 19 inch 1U enclosure.

The U70F was designed with accurate digital recording in mind and intended for those that prefer clean accurate meters put in clear line-of-sight. Sometimes the producer and muscians appreciate meters they can see too. Sometimes those on-screen meters are just not easily read from across the control room or are covered by a crowded screen when you need them.

Our new design uses advanced DSP technologies for improved performance and offers the following features: 
XLR balanced inputs and outputs The audio pass through feature simplifies the connection of the U70F  

Independent  60  LED  scales  with  five  Illuminated  scale  markers  per  channel.  (Non­multiplexed for flicker­free operation) dB linear scales for improved readability  

Switchable scales: ­39 dB to +20 dB with a linear resolution of 1 dB  per step or        ­19.5 dB to +10 dB with a linear resolution of 0.5 dB per step 
Selectable Dot or Bar display characteristics 
Selectable  Peak­Hold  functions  with  hold  times  of  2.5s  or  indefinitely  with  manual reset 

Display modes:  
PPM Bar Mode,  PPM Dot Mode,  RMS Bar Mode,  PPM Dot and RMS Bar Mode (default) operated simultaneously  Every mode supports the additional Peak Hold feature. 
Integrated universal power­supply (90 – 240 VAC, 50 – 60 Hz) with IEC connector 
Rack­mount or table­top operation 
Standard 19inch 1U enclosure   

PPM metering is more important than ever in modern digital recording since A/D  converters do not clip gracefully at all. VU metering is too slow and unable to correctlydisplay transients and other complex waveforms. Monitoring the recording levels after  the A/D conversion in the digital domain cannot show any “overs” and will give false readings. The U70F offers a high quality solution to these problems, latency free true over sampled peak metering. In addition, the simultaneous true RMS feature allows the  recording/mastering engineer to judge the “loudness” of the program. This especially  important to insure the program will be on par with others when playing on radio/ TV stations, internet streams or portable music players. The peak hold feature with manual  reset allows users to read the maximum peak value of a complete program. 

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