Network to Format A Interface/Distributor-Dante Input-3 Format A, 1 Balanced Line Aux Outputs

The RDL RU-NFD converts four Dante network audio signals into analog outputs for RDL Format-A distribution and balanced line-level integration. Three received Dante signals feed Format-A pairs A, B and C, while the fourth feeds a balanced +4 dBu auxiliary output. Its three Format-A RJ45 output jacks, 24-bit digital-to-analog conversion, detailed status indicators and compact mountable enclosure support organized integration into networked audio systems.

Ideal Use Cases

The RU-NFD is suited to systems that need to connect Dante network audio with RDL Format-A receivers. Each of its three Format-A output jacks provides signal pairs A, B and C, allowing the three Format-A signals to be distributed through separate RJ45 connections over CATx cable. The fourth received Dante signal is available from a balanced, detachable-terminal-block auxiliary output at a nominal +4 dBu level. This combination supports installations that require both Format-A distribution and a conventional balanced line output from the same four-channel Dante source.

Why Choose This Model

This interface combines Dante reception, digital-to-analog conversion and Format-A distribution in one compact unit. It supports 44.1 kHz and 48 kHz sample rates, with 48 kHz as the default, and processes audio at 24-bit depth. Signal LEDs provide activity indication for all four received network channels. Additional indicators show network system and synchronization status, Ethernet link and speed, incoming power and power availability at the three Format-A outputs. Outputs mute automatically when the corresponding digital audio inputs are inactive.

Installation and Integration

The network connection uses an RJ45 port with Link and Speed indicators and operates at a 100 Mbps transmission rate. Three additional RJ45 jacks provide the RDL Format-A outputs, with connections carried through CATx cable. The balanced auxiliary output uses a detachable terminal block. Power connections include both a power jack and a detachable terminal block.

The RU-NFD requires 24 Vdc at 120 mA plus the requirements of connected loads. The primary output jack can power remote Format-A receivers, while an external 24 Vdc supply allows receivers to be powered through all three output jacks. Recommended supplies are the PS-24AS for the USA and PS-24AX for international use. The enclosure is equipped for either rack or surface mounting and measures 5.8 inches wide, 1.7 inches high and 5.2 inches deep. Its specified ambient operating range is 0 degrees C to 40 degrees C.

Performance Highlights

High-resolution 24-bit conversion is paired with RDL analog filtering. The specified frequency response is 20 Hz to 20 kHz within plus or minus 0.75 dB, while THD+N is below 0.1%. Noise below the +4 dBu operating level is specified below -85 dB when a pair is active and below -100 dB when muted. Headroom above +4 dBu exceeds 18 dB, and the stated audio operating relationship is 18 dBFS equals +4 dBu. Crosstalk is specified below 80 dB from 20 Hz to 20 kHz.

The auxiliary connection delivers a nominal +4 dBu balanced output. Its output impedance is 150 ohms balanced or 75 ohms when used unbalanced. These published values make the analog output characteristics available for level planning and downstream equipment matching.

What Makes It Different

The RU-NFD does more than provide a single analog conversion path. It separates four received Dante signals into two useful output formats: three channels become Format-A pairs A, B and C, and the fourth becomes a balanced auxiliary line output. All three Format-A pairs are present at each of the three Format-A output jacks. The unit is compatible with a wide array of RDL Format-A active and passive receivers, while its receiver-powering provisions reduce the number of separate power connections required at supported remote devices.

For installations requiring PoE or hot-standby operation, the related RU-NFDP model is specified for Class 0 IEEE 802.3af PoE. The RU-NFD covered here is the 24 Vdc model identified by SKU and MPN RU-NFD.

Final Assessment

The RDL RU-NFD provides a clearly defined bridge from four-channel Dante network audio to three distributed Format-A signal pairs and one balanced +4 dBu auxiliary output. Its 24-bit conversion, published analog performance, channel-level signal indication, network synchronization monitoring, receiver-powering capability and rack-or-surface mounting options make it a focused interface for systems built around Dante and RDL Format-A connectivity.