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RDM Interpretation Questions Discussion and questions relating to interpreting and understanding the E1.20 RDM Standard.

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Old September 30th, 2009   #1
Task Group Member
Join Date: Dec 2008
Posts: 17

A couple of inconsistent usage of terms in E1.20 that it would be good to clear up in the next errata...

- "Slot Label ID" and "Slot ID/Offset" are used interchangeably (SLOT_INFO).

- "Slot Label Code" and "Slot ID" are used interchangeably (Tables B-1 and B-2).

It might also be useful to expand the example given for Secondary slots in SLOT_INFO (see "For example, a 16-bit pan function..."), as I've seen a number of responder implementations which made the same mistake with Secondary slots of reporting the Slot ID, rather than the Slot Offset of the Primary slot. An expanded example might be along the lines of...

00 00 00 00 01 // Dimmer
00 01 00 01 01 // Pan
00 02 00 01 02 // Tilt
00 03 00 02 01 // Color
00 04 00 03 02 // Gobo<>
00 05 05 00 04 // Slot Type ‘Index’ for Slot 0x0004 (Gobo<>)
00 06 00 04 02 // Focus
00 07 01 00 01 // Slot Type ‘Fine’ for Slot 0x0001 (Pan)
00 08 01 00 02 // Slot Type ‘Fine’ for Slot 0x0002 (Tilt)
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