projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| c2745d1f UH |
1 | ------------------------------------------------------------------------------- |
| 2 | DMX512-A | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | This is a set of example captures of DMX512 packets from a USB | |
| 6 | interface (DMX4ALL Mini interface), driven by a lighting control | |
| 7 | software loaded with 10 basic dimmer fixtures located at DMX addresses | |
| 8 | 1, 2, 101, 102, 201, 202, 301, 302, 401 and 402. | |
| 9 | ||
| 10 | The signal was grabbed directly at the interface without any actual | |
| 11 | fixtures attached to the bus. | |
| 12 | ||
| 13 | Details: | |
| 14 | http://www.dmx512-online.com/packt.html | |
| 15 | http://www.erwinrol.com/dmx512/ | |
| 16 | https://wiki.openlighting.org/index.php/DMX512-A | |
| 17 | ||
| 18 | ||
| 19 | Logic analyzer setup | |
| 20 | -------------------- | |
| 21 | ||
| 22 | The logic analyzer used was a Saleae Logic (at various sample rates): | |
| 23 | ||
| 24 | Probe 3-pin XLR DMX connector | |
| 25 | ----------------------------------- | |
| 26 | 0 DMX+ (3) | |
| 27 | 1 DMX- (2) | |
| 28 | ||
| 29 | The sigrok command line used was: | |
| 30 | ||
| 31 | sigrok-cli --driver fx2lafw -c samplerate=<samplerate> --time 1s \ | |
| 32 | --channels '0=DMX,1=DMX Inverse' \ | |
| 33 | -o <samplerate>_all_<dmxvalue>.sr | |
| 34 | ||
| 35 | with <dmxvalue> being the dimmer level of all fixtures. | |
| 36 | ||
| 37 | Note: While "--time 1s" was used to create the files, they have | |
| 38 | retroactively been shortened to roughly 40ms each. | |
| 39 |