Specification
SDI

A. General
i.	The Serial Data Interface (“Interface”) shall be a solid-state device specifically designed to be part of a lighting control system in an architectural or entertainment application.
ii.	The Interface shall operate in conjunction with a compatible lighting controller (“Controller”) and Ethernet data node (“Node”).
iii.	The Interface shall receive data from a Controller via the Node and output it as one of many SPI,  synchronous and asynchronous serial protocols based on a user-configurable mapping (patch).
iv.	There shall be visual indicators on the Interface showing status of the device and data.
v.	The Interface shall default to running dark to be unobtrusive and there shall be a button to illuminate status LEDs when pressed.
vi.	The input data signal from the Node shall be fully isolated. 
vii.	The Interface shall operate up to 200m from the Node for Asynchronous data transmission and up to 40m from the Node for Synchronous data transmission.
viii.	The Interface shall be able to share its power supply with the LED drivers it is controlling.
ix.	Each Interface shall support up to 1536 control channels.
x.	The Interface shall be provided with a 5 year manufacturer warranty.

B. Physical

i.	The unit shall be a 2 unit DIN enclosure (35.5mm x 90.0mm x 35.5mm)
ii.	The unit shall additionally have a keyhole bracket for alternate wall mounting.
iii.	The unit shall be entirely solid-state with no moving parts, fans nor hard disc drives.
iv.	The unit shall operate in a temperature range from 0°C to 50°C (32°F to 122°F)
v.	The unit shall be CE compliant.

C. Electrical
i.	The Node shall be designed to support the following wire terminations (0.200” (5.08mm) plug-in rising clamp terminals):
a.	2-pin 9V to 48V DC Power 
b.	3-pin AD and SD/SC serial output
c.	2-pin RS485 serial input
and the plug-in rising clamp terminals shall be provided.

D. Software
i.	The Interface, Node and associated Controller shall be supported by programming software running on either a PC or Mac platform.

E. Product
i.	The Interface shall be the Pharos SDI from Pharos Architectural Controls Ltd, London, United Kingdom.