XCI

The serial control interface between the NEXUS network and the outside world

The serial interfaces of the XCI card support RS-232, RS-422, RS-485, MIDI and Ethernet. The board can be used universally as a control interface between the NEXUS system and external devices, with a variety of common protocols already available on the board. The deep integration of the XCI card into the NEXUS Logic Control macro control allows extremely complex applications and bidirectional interactions between NEXUS and external systems to be implemented.

The XCI cards are available in two different versions: as a variant with two outgoing serial interfaces in 4 HP width and in double width with four serial ports accessible from the front. Each board also has one RJ45 Ethernet port , on which the electrical specifications of each individual interface can be configured separately. RS-232, RS-422, RS-485 and MIDI are available, supporting both AES15 and SMPTE/EBU specifications.

Protocols for a variety of external devices and systems are already available. Conversely, the common, large control systems also support the extensively implemented NEXUS protocol and are able to execute all important commands in the NEXUS network and monitor live, online desired parameters such as certain levels, for example.

4 independent serial interfaces

In the 8TE wide version, the XCI has four independent serial interfaces that are electrically isolated from each other and from the system. R232, R422, R485 and MIDI allow bidirectional communication with the NEXUS system. Which protocol is used can be configured manually for each interface on the printed circuit board's patch panel.

Self-sufficient processor system

An integrated Coldfire processor ensures that the computer resources required by the protocols do not affect the NEXUS system.

Integrated real-time clock

Daniel didn't even know anything about the integrated real-time clock, which seems to exist on the XACI, so it can be assumed that although it is listed in the NEXUS technical manual, it is not worth mentioning here either.

Buffered supply voltage

To bridge brief power failures or to safely terminate write accesses after switching off, the static working memory SRAM is battery-buffered.

Electronic fuses of the interfaces

In addition to protecting the module with a fuse, the interfaces are individually fused. When this is activated, the LED associated with the interface goes out.

Connections

Variant: 4 Ports

2 x 8TE

D-Sub 9 Socked female	4x	RS 232 DCE, RS 232 DTE, RS 422 AES 15, RS 422 SMPTE/EBU, MIDI, Stage Tec-Protocol	bidirektional
RJ45	1x	IP	bidirektional

Variant: 2 Ports

2 x 8TE

D-Sub 9 Socked female	2x	RS 232 DCE, RS 232 DTE, RS 422 AES 15, RS 422 SMPTE/EBU, MIDI, Stage Tec-Protocol	bidirektional
RJ45	1x	IP	bidirektional

Technical specifications

Interface RS 232

Data rate	38.4 Kbps (typ.); 115.2 Kbps (max.)
Input impedance	5 kohm (typ.)
Input voltage (max.)	–30…30 V
Output voltage	±8 V @ 3-kohm load (typ.)
Cable length	10 m (max., recommended)

AES-15 compliant RS 422/485 port

Data rate	38.4 Kbps (typ.); 115.2 Kbps (max.)
Input impedance	120 ohm/5 kohm, jumper-selectable
Input voltage (max.)	–7…12 V
Diff. output voltage	3.1 V (typ.) @ 100-ohm load
Cable length	100 m carrying 110-ohm line (max., recommended)

SMPTE/EBU-compliant RS 422/485 port

Data rate	38.4 Kbps (typ.); 115.2 Kbps (max.)
Input impedance	120 ohm/5 kohm, jumper-selectable
Input voltage (max.)	–7…12 V
Diff. output voltage	3.1 V (typ.) @ 100-ohm load

MIDI interface

Output voltage	4.5 V (typ.), 5 mA (max.)
Output current	5 mA
Input voltage (max.)	–10…10 V
Input current OFF	< 0,25 mA
Input current ON	> 5 mA (15 mA max.)
Data rate	31.25 Kbps
Cable length	5 m (as per MIDI specification)

Stage Tec panel-link interface

Input and output	4 balanced wire pairs as per RS 422 specification
Data rate	1 Mbps (max.)
Input impedance	120 ohm/5 kohm, jumper-selectable
Input voltage (max.)	–7…12 V
Diff. output voltage	3.1 V (typ.) @ 100-ohm load
Cable length	100 m carrying 110-ohm line (max., recommended)

Ethernet interface

Data rate

10/100 Mbps

Operation conditions

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

Storage conditions

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

Power supply

Voltage	+4,75…5,25 V
Currrent	900 mA

Mechanical data

Weight

0,30 kg

NEXUS / NEXUS Star Technical specifications

XCI 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+

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.

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

Für individuelle Anforderungen wird die Karte mit einer Vielzahl von Steckverbindertypen angeboten: XLR, BNC, Cinch und optisch TOSLINK; Ausführungen mit RJ 45- und D-Sub-Steckverbindern führen installationsfreundlich alle Signalleitungen gemeinsam über den jeweiligen Steckverbinder.

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.

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