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10 January 2025

RDL SF-NH1 DANTE INTERFACE Output, 1x stereo headphone output, 3.5mm jack, volume control

Stock code
57-4837
Brand
RDL (Radio Design Labs)
Model number
  • SF-NH1
RDL SF-NH1 DANTE INTERFACE Output, 1x stereo headphone output, 3.5mm jack, volume control
RDL SF-NH1 DANTE INTERFACE Output, 1x stereo headphone output, 3.5mm jack, volume control

RDL AV INTERFACES - SYSFLEX Series

Sysflex is a family of modules which interface between DANTE data networks and analogue and digital audio devices. Microphones, AES/EBU and SP/Dif digital signals, as well as USB connections, can be used as feeds into the network, depending on model. There are also modules to take signals from the network and present them to both analogue line-level and digital audio inputs, headphones and even one module with an output to feed loudspeakers. A range of hardware is offered to assist in mounting the modules.

Special software is not required for module setup. For more details concerning networking, please read DANTE Networking Basics.

Common features:

All are contained in a metal case 147mm deep and 42.7mm high. There are three module widths.

All modules, apart from the SF-NP40D, are powered over the network connection, using power from a suitable switch offering POE to Class 0, IEEE 802.3af.

They each have a single RJ45 connector on the rear for connection to the network. This has two LEDs, one indicating a 100Mbps connection, the other indicating 'data activity'.

All may be mounted on a flat surface using the holes for fasteners at the rear. Alternatively they may be mounted under a table or counter, in a rack or on a microphone stand thread using optional accessory brackets and adapters.

Common network specifications:

Protocol: DANTE. Transmission rate: 100Mb/s. Sample rates supported: 44.1, 48 (default), 88.2, 96kHz. Bit depth supported: 24 bits. Audio operating level: -20dBFS = +4dBu. Reference level: 0dB FS = +24dBu.

DANTE INTERFACES – INPUT

DANTE INTERFACES – BI-DIRECTIONAL

DANTE INTERFACES – OUTPUT


SF-ND2 - DANTE network to single digital audio output

This converts two DANTE network channels to a two-channel, digital audio output.

Outputs: On the front panel there is a 3-pin, transformer balanced, male XLR connector for an AES/EBU connection and both RCA (phono) and optical connections for S/P Dif. A switch is provided, marked 'AES/EBU' and 'S/PDIF' to enable 'appropriate output jack and any required electrical and data format conversion'. A separate LED indicator indicates 'valid power' and synchronisation to a master clock.

This module is 73.7mm wide.


SF-NH1 - DANTE network to stereo headphones output

This converts two DANTE network audio channels to a stereo headphone output, with a volume control on the front-panel.

Output: The front panel has a stereo, 3.5 mm jack socket and a rotary volume control. An LED indicates 'valid power' and synchronisation to a master clock.

Outputs: 0dB FS = 150 mW into 100ohms, maximum. Output impedance: Less than 50ohms. Response: 20Hz to 20kHz +/- 0.5dB. Distortion: Better than 0.05% THD+N, 20Hz to 20kHz, -20dBFS; 0.015% at 1 kHz. Noise: -75dB, below -20dBFS; -95, below 0dBFS. Crosstalk: Better than -80dB, 1 kHz, -20dBFS. Headroom: 20dB, above -20dBFS. This module is 73.7mm wide.


SF-NL2 - DANTE network to two analogue audio outputs

This converts two network channels to two balanced, 'line-level', audio outputs with XLR connectors. Each channel 'provides +4dBu balanced for a network digital audio level of -20dBFS'. Each output is 'equipped with a selector to set the output to line level or attenuate the output by 50dB to mic level'.

Output: Two 3-pin, male, XLR connectors, each with an adjacent, two-position, switch marked 'Mic' and 'Line'. An LED indicates 'valid power' and synchronisation to a master clock.

Output level: +4dBu, nominal line level, balanced or -45dBu nominal microphone level, into 150 ohms, operating; +24dBu line level maximum. Output impedance: Less than 100 ohms. Response: 20Hz to 20kHz +/- 0.5dB. Distortion: Less than 0.1% THD+N, 20Hz to 20kHz,+4dBu/-20dBFS; 0.015% at 1 kHz. Noise: Better than -75dB below +4dBu; -95 below +24dBu. Crosstalk: Below noise floor, 1kHz, output to output; Less than -60dB, 20 kHz. Headroom: 20dB above +4dBu/-20dBFS.

DANTE INTERFACES - OUTPUT - With Amplifier

AMPLIFIERS – Non DANTE


SF-MSM1 - Microphone stand mounting adapter

Any Sysflex module can be mounted on this sloping adapter, snapped in and then 'secured by one single screw'. It has an aperture for fixing to microphone stands with a 5/8 inch 27 TPI thread. Adapter 53-217 will convert this to the 3/8 inch thread more commonly found in Europe. For alternative adapters, see Thread Adapters.

Dimensions: 55.9 x 38.1 x 142.2 (w x h x d) mm.


SF-RA1 - Rack adapter

The SF-RA1 rack mounts several SysFlex modules in fixed or mobile installations. Modules may be combined up to a width of 430mm; they 'quickly snap into the SysFlex rack mount and each is firmly secured with a single screw'. The racking system 'segregates network and power wiring from the audio and digital audio connectors'. The front panel is blank.

Dimensions: 1U, 19-inch rack mounting, 25.4mm deep.


SF-UCB2 - Under counter brackets

Two bent, metal, brackets fit under a Sysflex case and are secured using two screws (included) each. The brackets may then be fastened to the underside of a counter, shelf or table using fasteners (not included) through the two, slotted, mounting holes in each bracket.