dmx_basics:dmx_fault_finding
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| dmx_basics:dmx_fault_finding [2012/01/06 18:03] – Spirit | dmx_basics:dmx_fault_finding [2013/03/11 03:45] (current) – external edit 127.0.0.1 | ||
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| First of all is to be systematic in the fault finding even in the panic phase.\\ | First of all is to be systematic in the fault finding even in the panic phase.\\ | ||
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| - | **Nothing happens at all.(1)**\\ | + | **Nothing happens at all.**\\ |
| No lights are reacting on any fader control.\\ | No lights are reacting on any fader control.\\ | ||
| This means no communication to the fixture.\\ | This means no communication to the fixture.\\ | ||
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| If it is the fixture then verify it by unplug the input, output DMX cable from the fixture and connect the two connectors direct. If the system is working then see that the error appears again when the fixture are inserted.\\ | If it is the fixture then verify it by unplug the input, output DMX cable from the fixture and connect the two connectors direct. If the system is working then see that the error appears again when the fixture are inserted.\\ | ||
| This is to verify that the fixture actually has an error and not a faulty cable / connector.\\ | This is to verify that the fixture actually has an error and not a faulty cable / connector.\\ | ||
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| + | But if you'r realy sure that the address is Set correct on the Fixture and the Software, But you have still no Reaction.\\ | ||
| + | Then the Problem can be Caused by The fixture them Self, Sometimes they Only work on DMX channel 1 to 256.\\ | ||
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| - | **One fixture don’t react as expected.**\\ | + | **One or More fixture don’t react as expected.**\\ |
| It is most likely that the fixture has been set to a wrong address.\\ | It is most likely that the fixture has been set to a wrong address.\\ | ||
| Select the fixture in FreeStyler and use a know function like shutter. If the fixture does something else than turning on or off the light then it is most likely a wrong address on the fixture. \\ | Select the fixture in FreeStyler and use a know function like shutter. If the fixture does something else than turning on or off the light then it is most likely a wrong address on the fixture. \\ | ||
| Compare fixture address in FreeStyler and the address set on the hardware fixture.\\ | Compare fixture address in FreeStyler and the address set on the hardware fixture.\\ | ||
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| - | In some cases you'r realy sure that the address is Set correct on the Fixture and the Software, But still no Reaction. | ||
| - | the Problem then can be Caused by The fixture then Self, Some times they Only work on DMX channel 1 to 256 | ||
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| One could be the controller from time to time sends a wrong frame.\\ | One could be the controller from time to time sends a wrong frame.\\ | ||
| This is very difficult to detect because all frames somehow has to be recorded and checked.\\ | This is very difficult to detect because all frames somehow has to be recorded and checked.\\ | ||
| - | An other and more likely possibility are reflections on the cable coursed by missing DMX termination or a cable that are not the 120 ohm DMX type.\\ | + | Another |
| This will course the DMX signal bouncing forward and backward on the cables. It just take one bit to interfere with and then color shifts or shutter opens and so on.\\ | This will course the DMX signal bouncing forward and backward on the cables. It just take one bit to interfere with and then color shifts or shutter opens and so on.\\ | ||
| + | See eventually [[dmx_basics: | ||
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| + | One funny thing with the DMX is that it is verry robust and will work even if one of the wire are broken if the terminator is not fitted.\\ | ||
| + | So if the setup works without the DMX terminator but fails with the DMX terminator added, then one of the wire may be broken.\\ | ||
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| Also interfere from external sources can be a problem. HID Lamps, Strobes and other thing that can generate a spike. Transmitter, | Also interfere from external sources can be a problem. HID Lamps, Strobes and other thing that can generate a spike. Transmitter, | ||
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| **MARK THE ITEM! “DEFECT” “ FAULTY” …….**\\ | **MARK THE ITEM! “DEFECT” “ FAULTY” …….**\\ | ||
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| + | Finally it is difficult to find errors and some simple equipment can be extreme helpful.\\ | ||
| + | See: [[dmx_basics: | ||
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dmx_basics/dmx_fault_finding.1325872987.txt.gz · Last modified: 2013/03/11 02:57 (external edit)