XDA+

The universal line level outputs up to +24 dBU maximum level

The XDA+ board is intended for connecting devices that require an analog line level at the input. The board has eight outputs, is available with different connectors and offers outstanding audio values.

The 24-bit converters of the XDA+ output cards feature unbeatable 131 dB(A) dynamics and a high maximum output level of +24 dBu. XDA+ cards are therefore suitable for the connection of all line level devices even for the highest demands. The extremely low distortion factor is a further criterion in favor of Stage Tec's converter technology. The very low signal delay of only 10 samples makes these fast converters predestined for all time-critical applications. The sophisticated Stage Tec DSP converter technology sets the standard for tonal neutrality with the lowest latency at the same time! Compared to conventional circuit technology, the integrated, transformer-insulated output stage scores with insensitivity to magnetic fields, high symmetry and a small output capacitance.

The front panel is available in different versions with XLR, D-Sub or RJ45 connectors, enabling easy integration into any setups: cards with XLR connectors allow the construction of connection panels without further effort; the version with Sub-D connectors is the preferred solution for direct cabling within racks, and the version with RJ45 sockets is the intelligent solution for fixed installations with separate connection boxes.

131 dB dynamic range and +24 dBU maximum level

In addition, Stage Tec converters have an extremely homogeneous noise spectrum, so that even at this very high dynamic range noise is almost imperceptible.

Output stages transformer isolated

Stage Tec's transformer-insulated outputs have clear advantages over conventional circuits: They are insensitive to magnetic fields and have a lower distortion factor, especially at high and low levels and at low frequencies. They also offer high symmetry, galvanic isolation and a lower output capacitance.

Flexible use thanks to versions with XLR, Sub-D or RJ45 connections

This module can optionally be supplied with different front panels, the electrical conversion remains the same. XLR sockets are suitable for constantly changing setups, while the Sub-D version is suitable for permanently wired installations. With the RJ45 version, 4 channels each are connected to one socket and enable fast and cost-effective cable laying with conventional Cat5 cables (or better). For signal sources that are to be connected locally via XLR connectors, the RJ45-ADP adapter circuit board, which converts RJ45 back to XLR, is available as an option.

Connections

Variant: XLR

2 x 8TE

XLR male

Line Level

Output

Variant: D-Sub 25

1 x 4TE

D-Sub 25 Socked female

Line Level

Output

Variante: RJ45

1 x 4TE

RJ45

Line Level

Output

Technical specifications

Configuration, available separately for each channel

	Ground bonding, liftable, on the output port (XLR only)
	Short-circuit-proof
	Insusceptible to inadvertent phantom-power routing
	Analog mute when enabling or disabling the power supply

D/A conversion

Resolution

24 bit, 128 times oversampling

Audio data

Output levels	0…24 dBu @ > 600 ohm load; adjustable in 1-dB steps; or 0…15 dBu @ > 300 ohm load
Dielectric strength	Common-mode voltage: < ±200 V (DC), < 250 V (AC) (1 min. max.); ESD protection: 15 kV

Frequency response	20...20,000 Hz (+0 dB, -0.2 dB), integrated DC filters
Output impedance	19 Ohm (typ.)
CMR (output impedance)	> 60 dB @ 20…20,000 Hz; 120 dB @ 50 Hz (typ.); 80 dB @ 20 kHz (typ.)
Offset voltage	< 1 mV (0.1 mV typ.)
CMR (output voltage)	> 40 dB @ 20…20.000 Hz 90 dB @ 50 Hz 50 dB @ 20 kHz
Gain	–63…15 dB, clickfree adjustment in 1-dB steps; plus muting
Distortion factor (THD+N)	0.003 % (typ.) @ 24 dBu; < 0.006 % (typ.) @ –20…+24 dBu, < 0.02 % guaranteed; 0.0006 % (typ.) @ 4 dBu; –68 dB @ –60 dBFS
Dynamic range	@ 0 dBFS = 24 dBu: 131 dB (A) (typ.); 128 dB RMS (typ.)
Idle channel noise	-124…–128 dBFS (RMS) (typ.); - 93 dBqp (CCIR 1K) (typ.); –105 dBu (typ.) (CCIR 2K RMS)
Crosstalk attenuation	> 100 dB @ 20…20,000 Hz (> 130 dB typ.)
HF resistance	HF-demodulation resistant according to IRT standards (»IRT-Pflichtenheft 3/5«) and European standards
EMC	EN 55022, Class B (with XLR plugs inserted), and EN 55013
Sample rate	44,1 kHz, 48 kHz, 88,2 kHz, 96 kHz (NEXUS system clock)
Latency	< 0.23 ms @ 48 kHz sample rate

Operation conditions

Temperature range	0° C to +50° C
Max humidity	max. 90 %, non-condensing

Storage conditions

Temperature range	–35° C to +70° C
Max humidity	max. 90 %, non-condensing

Power supply

Voltage	+4,9…5,2 V
Current	1.2 A (2 A at max. load)

Mechanical data

Weight	0.24 kg
Note	In the XLR version, the two front panels are connected with a ribbon cable.

NEXUS / NEXUS Star Technical specifications

XDA+ Technical specifications

Analogue Audio Components

XAD+

The XAD+ board is designed for connecting analog signal sources with line levels. The board offers eight inputs, is available with different connectors and uses the patented TrueMatch converter for outstanding audio values.

XDA+

XMICplus

The XMIC+ microphone input board features eight TrueMatch® 32-bit converters, each with a 4-channel active microphone splitter. Each of the channels has separate gain control, adjustable impact sound filters and a phase inverter and works in a permanent self-monitoring and self-calibration.

HXAD

HXAD NEXUS cards offer eight analog stereo line inputs (16 audio channels). Versions with D-Sub or RJ45 connectors are available, which are particularly suitable for applications that require small sizes with high audio quality at the same time.

HXDA

The HXDA board is designed for the output of analog, 2-channel signals with line level. With 16 audio channels on only 4HP, it is suitable for fixed installations requiring a large number of output channels, for example.

Digital Audio Components

HXETR

The small size with a high number of AES3 inputs and outputs makes the HXETR cards ideal for applications where many external devices have to be connected to a NEXUS system via AES/EBU signals in the smallest of spaces. 8 inputs and 8 outputs together make 32 audio channels.

XETR

The XETR AES/EBU boards combine four 2-channel digital inputs and four 2-channel digital outputs on one NEXUS board. Versions with only inputs and outputs are available; versions with XLR or BNC connections offer great structural flexibility.

XDIP

The XDIP card establishes the connection between Dante and NEXUS networks. With four Ethernet ports, it operates as a switch and supports redundant Dante connections.

XDED

The XDED board series is designed as Dolby-E and Dolby-D input board for the NEXUS system. It supports all features provided in the Dolby specifications and supplements them with useful options such as auxiliary sync generation to allow limited operation even if video sync is missing.

XDEE

The XDEE board series is designed as Dolby-E output board for the NEXUS system. It supports all features provided in the Dolby specifications and supplements them with useful options such as auxiliary sync generation to allow limited operation even if video sync is missing.

XER

The XER card is the digital gateway to the NEXUS world by receiving and evaluating AES/EBU data streams. A pragmatic operating concept ensures pleasant handling.

XER-M

The XER-M module is intended for connecting digital microphones.

XET

For individual requirements the card is offered with a variety of connector types: XLR, BNC, Cinch and optical TOSLINK; versions with RJ 45 and D-Sub connectors allow all signal lines to be routed together via the respective connector in an installation-friendly manner.

XAF

With an XAF card it is possible to integrate devices with a Toslink optical port in 8-channel ADAT format into a NEXUS network. The card has an input and an output and processes a total of 16 audio channels.

XMF

The XMF MADI card provides a simple, powerful solution for connecting a NEXUS system to MADI equipment anywhere.

XSDI

With the XSDI card, audio signals can be extracted from a digital SDI video data stream, replaced and simultaneously embedded again.

XHDI

With the XHDI card, audio signals can be extracted from an HDSDI digital video stream, replaced and simultaneously embedded again.

XTF

With the XTF card, Stage Tec provides an I/O card that supports the TASCAM multi-track format. With eight input and eight output audio channels and an optional sample rate converter, the board supports high-quality signal transfer between the NEXUS network and connected TASCAM devices.

XFIP

With the XFIP card it is possible to connect AoIP networks to the NEXUS system.

DSPs- & Controllers Component

System Components

NEXUS Star Components

RCX

The RCX card is the central unit in the NEXUS Star Router. It manages the device and provides the internal matrix with 4,096 x 4,096 crosspoints. External control systems can be connected to the NEXUS network via various interfaces. The RCX card can be redundantly equipped, which is what the safety concept of the NEXUS system is all about.

RFOC

The RFOC card is the counterpart to the XFOC network cards in NEXUS base devices. Standard SFP modules allow the very flexible integration of the Star Router into NEXUS networks of any topology. Due to the high switching capacity of the Star Routers, RFOC cards can be used to form a star point in the network, via which many basic devices can be connected to each other centrally.

RMF

The RMF MADI card is the consistent scaling of the XMF MADI card for NEXUS base devices. As a router card, it allows up to four MADI universes to be integrated into a NEXUS network. The four ports, both BNC and SFP ports for LC-duplex fiber optics, are connected directly to the matrix of the Star Router and can be routed from there system-wide.

RSYNC

The RSYNC board supports special applications that require a larger number of different sync inputs and/or outputs. Among them is a BNC input for video genlock or blackburst, which supports both bi-level and tri-level sync.

RMC

The RMC card is the heart of every AURUS or CRESCENDO mixer. It handles every single operation, manages the mixer projects and controls the entire data exchange between the console interface, the NEXUS network and the DSP cards assigned to the console. Up to two mixing console surfaces can be connected to one RMC card. In addition, there are connections for time code, MIDI and other controls such as RAS.

RMCQ

The RMCQ card is the heart of the new AVATUS IP mixing consoles from Stage Tec. It handles every single operation, manages the mixer projects and controls the entire data exchange between the console interface, the NEXUS network and the DSP cards assigned to the console.

RMDQ

The RMD cards form the scalable DSP of the first generation for Stage Tec's large digital mixing consoles of the AURUS and CRESCENDO families. As development progressed, they were replaced by the RMDQ card generation.

RIF67

With the RIF67 card it is possible to connect up to eight AoIP networks to a NEXUS system. AES67 and Ravenna are supported. The RIF67 cards are available in four versions: with 2, 4, 6 or 8 active ports. A total of 256 audio channels can be output in IP streams. Depending on the expansion level of the board, 8 channels (RIF67-1) down to 2 channels (RIF67-4) can be bundled per stream.

Base Units

Optical Multiplexer

AVATUS	Analogue-Audio-Components
AURUS platinum	Digital-Audio-Components
CRESCENDO platinum	DSPs- & Controllers-Component
AURATUS platinum	System-Components
ON AIR flex	NEXUS Star-Components
	Base Units
	OMUX Optical Multiplexer