projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| c39dd54f UH |
1 | ------------------------------------------------------------------------------- |
| 2 | DCF77 | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 0dcc79e2 | 5 | This is a set of example captures of a DCF77 signal. The hardware used for |
| ad9c1894 UH |
6 | receiving the signal is a Pollin DCF1 module (3.3V supply). The Pollin |
| 7 | order number for the module is 810 054. | |
| 0dcc79e2 UH |
8 | |
| 9 | The dumps were made January 9, 2012 in the evening/night. | |
| ad9c1894 UH |
10 | Only the dcf77_480s_pon_interrupted.sr dump was made January 10, 2012 in |
| 11 | the evening. | |
| c39dd54f UH |
12 | |
| 13 | Details: | |
| 14 | http://en.wikipedia.org/wiki/DCF77 | |
| 0dcc79e2 | 15 | http://www.pollin.de/shop/dt/NTQ5OTgxOTk-/Bausaetze_Module/Module/DCF_Empfangsmodul_DCF1.html |
| ad9c1894 | 16 | http://www.pollin.de/shop/downloads/D810054D.PDF |
| c39dd54f UH |
17 | |
| 18 | ||
| 19 | Logic analyzer setup | |
| 20 | -------------------- | |
| 21 | ||
| 22 | The logic analyzer used for capturing was a Saleae Logic. | |
| 23 | ||
| 24 | The logic analyzer probes were connected like this: | |
| 25 | ||
| 26 | Probe DCF77 module | |
| 27 | ------------------------ | |
| 28 | 1 (black) PON | |
| 29 | 2 (brown) DATA | |
| c39dd54f UH |
30 | |
| 31 | ||
| 32 | Data | |
| 33 | ---- | |
| 34 | ||
| 35 | The sigrok command line used was: | |
| 36 | ||
| 37 | sigrok-cli -d 0:samplerate=1mhz --time 1800s \ | |
| 38 | -p '1=PON,2=DATA' -o dcf77_1800s.sr | |
| 39 | ||
| 40 | The time and samplerate varies, depending on the file. | |
| 41 | ||
| ad9c1894 UH |
42 | The dcf77_480s_interrupted.sr file contains a dump where the power was removed |
| 43 | from the module one or more times during the capture. | |
| 44 | ||
| 45 | The dcf77_480s_pon_interrupted.sr file contains a dump where the PON pin was | |
| 46 | set from low to high (PON = high means that the device is disabled) for a | |
| 47 | few seconds, then back to low. | |
| 48 |