Precision Audio and AV Interface Products

Radio Design Labs

RU-NFD Network to Format-A Interface/Distributor

  • Converts Four Dante Network Audio Signals to RDL Format-A and Aux
  • Easy Installation with Format-A Connections on RJ45 through CATx Cable
  • Three Dante Audio Signals Feed Format-A Output Pairs A, B and C
  • Fourth Dante Audio Signal Feeds Auxiliary Balanced +4 dBu Line Output
  • Format-A Pairs are Distributed to Three Separate Format-A Output Jacks
  • Signal LEDs Indicate Audio for Each of the Four Received Network Signal Channels
  • High Resolution 24 Bit Digital to Analog Conversion
  • Legendary RDL Analog Filtering Enhances Superb Audio Performance
  • Powers Remote Format-A Receivers through Primary Output Jack
  • External 24 Vdc Supply Powers Format-A Receivers through All Output Jacks
  • LED Indicators Show Network Sync Status
  • Outputs Mute when Digital Audio Inputs are Inactive
  • Normal or Hot-Standby Operation from PoE (Model RU-NFDP)
  • Compatible with Wide Array of RDL Format-A Active and Passive Receivers
  • Equipped for Rack Mounting or Surface Mounting
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The RU-NFD modules are Dante audio network interface products compatible with RDL Format-A twisted pair products. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

APPLICATION: The RU-NFD is an RDL Format-A sender/distributor that connects to a Dante-enabled network. It converts three Dante audio channels to RDL Format-A. Each network channel corresponds to Pair A, B or C of the Format-A outputs. The unit converts a fourth Dante audio channel to a balanced line-level AUX output.

One front-panel green signal LED corresponds to each of the four Dante 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.

The Format-A output is distributed to three separate rear-panel RJ45 jacks. Each Format-A output jack provides up to 200 mA of power to connected Format-A receivers. Multiple receivers may be daisy chained from one output jack, or may be connected by home run to each of the three outputs. Higher current Format-A receivers, such as RDL D-PSP1A powered Decora-style speakers, are to be individually connected to a separate output jack.

The RU-NFD output jacks support the entire range of Format-A receivers, making each output pair available for end-user connection on various wall plates, or feeding other equipment using rack-mounted, shelf-mounted or utility Format-A receivers. The wide array of Format-A receivers provide compatibility with commercial audio equipment operating at standard professional levels. High resolution digital audio converters coupled with RDL’s renowned analog filters provide superior fidelity with a very low noise floor. Each Format-A receiver may be connected near the RU-NFD or up to several thousand feet distant.

The RU-NFD is powered from an external 24 Vdc power supply, available separately. The external supply powers the RU-NFD and Format-A receivers connected to all three Format-A outputs. The RU-NFDP is equipped for PoE which powers the RU-NFD and Format-A receivers connected to the primary Format-A output jack. Audio is also distributed to the other two output jacks. Remote Format-A receivers connected to those other two output jacks are only powered from the RU-NFDP if an external 24 Vdc power supply is connected. If PoE power and an external 24 Vdc supply are both feeding an RU-NFDP, 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 each Format-A RJ45 connector is separately protected by an automatically resetting fuse. A power LED is associated with each connector, facilitating identification of wiring faults.

PoE relies on the use of a PoE enabled network switch. The RU-NFDP will reserve power from the switch even while being powered from an external 24 Vdc supply.

The RU-NFD is constructed in a durable, professional all-metal enclosure suitable for free-standing, surface-mounted or rack-mounted operation. This full-featured product is engineered and manufactured in the U.S.A for continuous duty in demanding installations. Built to last. Built to outperform.

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Applications

Network Connector:
RJ45 with Link and Speed indicators
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 Outputs
RDL Format-A RJ45 (3)
Format-A Signal Pairs Used (3):
A, B, C (each Format-A output)
Frequency Response:
20 Hz to 20 kHz (± 0.75 dB)
THD+N:
< 0.1%
Noise below +4 dBu:
< -85 dB (pair active); < -100 dB (pair muted)
Crosstalk:
< 80 dB (20 Hz to 20 kHz)
Headroom above +4 dBu:
> 18 dB

AUX Output
Output:
Balanced, detachable terminal block
Output Level:
+4 dBu (nominal)
Output Impedance:
150 Ω balanced; 75 Ω unbalanced
Frequency Response:
20 Hz to 20 kHz (± 0.5 dB)
THD+N:
< 0.1%
Noise below +4 dBu:
< -75 dB
Crosstalk:
< 80 dB (20 Hz to 20 kHz)
Headroom above +4 dBu:
> 18 dB
Indicators (12):
Power In (1); Power Out (3); Audio Signal LEDs (4), Network Sys and Sync (2), Ethernet Link and Speed (2)
Power Connections (2):
Power Jack; Detachable Terminal Block
Ambient Operating Environment:
0° C to 40° C
Power Requirement:
24 Vdc @ 120 mA plus connected loads, or PoE (RU-FNP)
PoE (RU-NFDP):
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:
1.605 lbs. (RU-NFD); 1.63 (RU-NFDP)
WEEE weight:
1.345 lbs. (RU-NFD); 1.37 (RU-NFDP)
Tariff code:
8543.70.9100

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RACK-UP SERIES

RACK-UPs are the original 1/3 rack width 1RU rack-mountable modules for the A/V, recording and broadcast industries. Module functions include mixing, switching, pre-amplification, power amplification, distribution, gain control, equalization and more. Some RACK-UP modules are constructed in solid encapsulated durable industrial black plastic enclosures; MAX RACK-UPs are assembled using heavy duty extruded aluminum and steel panels. The rear panels feature clear bold white lettering for the terminal blocks and connectors. Reverse-printed front-panel polycarbonate laminates provide an attractive, durable finished appearance for rack-mounted or free-standing use.

Since RDL first originated 1/3 rack width modules, RACK-UPs have led the industry in economical, high-performance and cost-effective long life solutions in system designs. Multiple RACK-UP modules may be interconnected, or may be connected with other RDL modules to form all or part of an A/V system. Certain RACK-UP modules are often used free standing; all RACK-UPs may be rack mounted. A complete range of mounting options is available for systems comprised of multiple modules.

RACK-UP modules provide input, output and control connections through terminal blocks and connector (or both) according to common usage in professional installations. Front panels are equipped with connectors, user controls and LED metering, as appropriate.

Functions and features provided by RACK-UPs, since their introduction, are still available today. This continuity in product offering and support makes RACK-UP modules a preferred long-term resource for system design solutions. RACK-UP SERIES modules are designed and manufactured in the U.S.A.

RU-NFD RU-NFD