anytronics Anyscene 512 Installatie- en bedieningshandleiding - Pagina 4

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4. DMX Requirements

4.1. DMX Loading

The maximum number of DMX receivers allowed along a single line is 32 devices without

the need for a buffer. If a DMX buffer is required within the system and multiple Anyscene

512s are being used the Anyscene's must all be linked together in a daisy chain

configuration and then joined to the buffer for correct operation to the wider DMX line.

4.2. DMX Wiring

The DMX specification is based on the use of a single DMX source at one end of a twisted

pair with receiving equipment connected along the twisted pair, the final receiver must then

have the standard 120Ω termination resistor fitted. The use of multiple DMX sources in

one system (as with a multiple Anyscene 512 installation) is not directly covered by the

specification.

When connecting Anyscene 512 units into a DMX system the same topology should be

emulated by using a daisy chain connection from one end of the system to the other. The

DMX line should be linear from start to finish ideally with no branches or junctions.

Anyscene 512 units and receiving equipment may be placed in any order along the DMX

line, but the equipment at either end of this DMX line (whether receiving equipment or an

Anyscene 512) should have a termination resistor fitted for best results.

4.3. Line Bias Network

To ensure correct operation whether there are several or just one Anyscene 512 units in

the system, only one Anyscene 512 should have its line bias network set to ON.

4.4. DMX Backup

With the power applied, the Anyscene 512 will power up and, if no input DMX data is

detected within 2 seconds, it will start to output DMX data from the last used scene. If

another source of DMX data is detected in the system, the Anyscene 512 will instead

remain dormant in standby/receive mode capturing the current DMX data with start code

zero from channels 1-512.

Whilst in this mode, the yellow Data LED will remain illuminated if valid data is being

received at any of the decoded addresses. If the memory write protection (MWP) switch

is in the OFF position, this captured DMX data can be stored as scenes as per the

programming section of this document.

If the DMX source is then disconnected or fails, the yellow Data LED on the Anyscene 512

will be extinguished. After two seconds the Anyscene 512 will start to retransmit the last

received DMX data, providing a standby or DMX backup feature. None of the mimic LEDs

will be illuminated in this mode as the output data corresponds to the last data received

rather than to the contents of any of the scene memories.

Units 5 & 6 Hillside Industrial Estate

London Road, Horndean,

Hampshire, PO8 0BL

Tel +44 (0)23 9259 9410

Fax +44(0)23 9259 8723

Page 4 of 13

AT1039 Issue 1

Anyscene 512 Operating

Instructions