Radio Design Labs RU-FN
Format-A to Network Interface


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The Radio Design Labs RU-FN is an RDL Format-A receiver that connects to a Dante-enabled network. It converts the three Format-A audio pairs to Dante networked digital audio channels. Each network channel corresponds to Pair A, B or C of the Format-A input. The unit converts a fourth input, balanced or unbalanced line-level AUX, to Dante.

One front-panel green signal LED corresponds to each of the three Format-A input channels. Received audio level is indicated on the variable-intensity LED indicator, facilitating setup when a networked computer is not connected at the module’s location. A Dual-LED VU meter facilitates adjustment of the front-panel AUX input gain control. The AUX input supports the complete range of normal unbalanced and balanced line-level sources.

The RU-FN is powered from an external 24 Vdc power supply, available separately. The external supply powers the RU-FN and Format-A senders connected to the Format-A input. The RU-FNP is equipped for PoE which powers the RU-FN and the connected Format-A senders. If PoE power and an external 24 Vdc supply are both feeding an RU-FNP, the unit will run from the external supply and will seamlessly switch over to PoE power upon loss of the external 24 V supply. The power feeding the Format-A RJ45 connector is separately protected by an automatically resetting fuse. A power LED is associated with the connector, facilitating identification of wiring faults.

Radio Design Labs RU-FN Features:

  • Converts RDL Format-A and Aux Source to Four Dante Network Channels
  • Easy Installation with Format-A Connections on RJ45 through CATx Cable
  • Format-A Audio Sources from Pairs A, B and C Converted to Dante
  • Fourth Dante Audio Channel Fed from Unbalanced or Balanced Aux Line Input
  • Front-Panel Gain Adjustment with Dual-LED VU Meter for Aux Input
  • Signal LEDs Indicate Audio for Each of the Three Format-A Pairs
  • High Resolution 24 Bit Analog to Digital Conversion
  • Legendary RDL Analog Filtering Enhances Superb Audio Performance
  • Powers Remote Format-A Senders through Format-A Input Jack
  • LED Indicators Show Network Sync Status
  • Normal or Hot-Standby Operation from PoE (Model RU-FNP)
  • Compatible with Wide Array of RDL Format-A Active and Passive Senders
  • Equipped for Rack Mounting or Surface Mounting

Radio Design Labs RU-FN Specifications:

  • Network Connector: RJ45 with Link and Speedindicators
  • Digital Audio Ethernet Protocol: Dante
  • Transmission Rate: 100 Mbps
  • Sample Rates Supported: 44.1 kHz, 48 kHz (default)
  • Bit Depth Supported: 24 bits
  • Audio Operating Levels: -18 dBFS = +4 dBu
  • Format-A Input: RDL Format-A RJ45
  • Format-A Signal Pairs Used (3): A, B, C
  • Frequency Response: 20 Hz to 20 kHz (+/- 0.5 dB)
  • THD+N: < 0.1%
  • Noise below +4 dBu: < -75 dB
  • CMRR: > 90 dB (50 Hz to 120 Hz, any input pair)
  • Crosstalk: < 80 dB (20 Hz to 20 kHz)
  • Headroom above +4 dBu: > 18 dB
  • Frequency Response: 20 Hz to 20 kHz (+/- 0.75 dB)
  • THD+N: < 0.1%
  • Noise below +4 dBu: < -75 dB
  • CMRR: > 60 dB (50 Hz to 120 Hz)
  • Crosstalk: < 80 dB (20 Hz to 20 kHz)
  • Headroom above +4 dBu: > 18 dB
  • Indicators (11): Power In (1); Power Out (1); AudioSignal LEDs (3), AUX Dual-LED VU Meter (2), Network Sys and Sync (2),
  • Ethernet Link and Speed (2)
  • Power Connections (2): Power Jack; DetachableTerminal Block
  • Ambient Operating Environment: 0° C to 40° C
  • Power Requirement: 24 Vdc @ 100 mA plus connectedloads, or PoE (RU-FNP)
  • PoE (RU-FNP): Class 0, IEEE 802.3af
  • Dimensions: 5.8" (15 cm) W; 1.7" (4.3 cm) H; 5.2"(13.2 cm) D
  • Package Type: Cardboard Box
  • Package Dimensions: 6 x 6 x 2.625 in.
  • Shipping Weight: 1.585 lbs
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