blob: 4b49fb053590e27f4b70296274061fa5d6cbce5e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
-------------------------------------------------------------------------------
DCF77
-------------------------------------------------------------------------------
This is a set of example captures of a DCF77 signal. The hardware used for
receiving the signal is a Pollin DCF1 module (3.3V supply). The Pollin
order number for the module is 810 054.
The dumps were made January 9, 2012 in the evening/night.
Only the dcf77_480s_pon_interrupted.sr dump was made January 10, 2012 in
the evening.
Details:
http://en.wikipedia.org/wiki/DCF77
http://www.pollin.de/shop/dt/NTQ5OTgxOTk-/Bausaetze_Module/Module/DCF_Empfangsmodul_DCF1.html
http://www.pollin.de/shop/downloads/D810054D.PDF
Logic analyzer setup
--------------------
The logic analyzer used was a Saleae Logic (at 1MHz):
Probe DCF77 module
------------------------
1 (black) PON
2 (brown) DATA
Data
----
The sigrok command line used was:
sigrok-cli -d 0:samplerate=1mhz --time 1800s \
-p '1=PON,2=DATA' -o dcf77_1800s.sr
The time and samplerate varies, depending on the file.
The dcf77_480s_interrupted.sr file contains a dump where the power was removed
from the module one or more times during the capture.
The dcf77_480s_pon_interrupted.sr file contains a dump where the PON pin was
set from low to high (PON = high means that the device is disabled) for a
few seconds, then back to low.
|
