1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML Strict//EN">
2
<TITLE>NTP PARSE clock data formats</TITLE>
3
<h1>NTP PARSE clock data formats</h1>
5
<p>The parse driver currently supports several clocks with different
6
query mechanisms. In order for you to find a sample that might be
7
similar to a clock you might want to integrate into parse i'll sum
8
up the major features of the clocks (this information is distributed
9
in the parse/clk_*.c and ntpd/refclock_parse.c files).
12
<h2>Meinberg clocks</h2>
14
Meinberg: start=<STX>, end=<ETX>, sync on start
15
pattern="\2D: . . ;T: ;U: . . ; \3"
16
pattern="\2 . . ; ; : : ; \3"
17
pattern="\2 . . ; ; : : ; : ; ; . . "
20
Meinberg is a german manufacturer of time code receivers. Those clocks
21
have a pretty common output format in the stock version. In order to
22
support NTP Meinberg was so kind to produce some special versions of
23
the firmware for the use with NTP. So, if you are going to use a
24
Meinberg clock please ask whether there is a special Uni Erlangen
26
You can reach <A HREF="http://www.meinberg.de/">Meinberg</A> via the Web.
27
Information can also be ordered via eMail from <A HREF="mailto: info@meinberg.de">info@meinberg.de</A>
30
General characteristics:
32
Meinberg clocks primarily output pulse per second and a describing
33
ASCII string. This string can be produced in two modes. either upon
34
the reception of a question mark or every second. NTP uses the latter
35
mechanism. The DCF77 variants have a pretty good relationship between
36
RS232 time code and the PPS signal while the GPS receiver has no fixed
37
timeing between the datagram and the pulse (you need to use PPS with
38
GPS!) on DCF77 you might get away without the PPS signal.
40
The preferred tty setting for Meinberg is:
41
CFLAG (B9600|CS7|PARENB|CREAD|HUPCL)
42
IFLAG (IGNBRK|IGNPAR|ISTRIP)
47
The tty setting for Meinberg GPS 166/167 receivers is:
48
CFLAG (B19200|CS8|PARENB|CREAD|HUPCL)
49
IFLAG (IGNBRK|IGNPAR|ISTRIP)
55
The clock is run at datagram once per second.
58
<STX>D:<dd>.<mm>.<yy>;T:<w>;U:<hh>:<mm>:<ss>;<S><F><D><A><ETX>
59
pos: 0 00 00 0 00 0 11 111 1 111 12 2 22 2 22 2 2 2 3 3 3
60
1 23 45 6 78 9 01 234 5 678 90 1 23 4 56 7 8 9 0 1 2
62
<STX> = '\002' ASCII start of text
63
<ETX> = '\003' ASCII end of text
64
<dd>,<mm>,<yy> = day, month, year(2 digits!!)
65
<w> = day of week (sunday= 0)
66
<hh>,<mm>,<ss> = hour, minute, second
67
<S> = '#' if never synced since powerup else ' ' for DCF U/A 31
68
'#' if not PZF sychronisation available else ' ' for PZF 535
69
<F> = '*' if time comes from internal quartz else ' '
70
<D> = 'S' if daylight saving time is active else ' '
71
<D> = 'U' if UTC time code is deliverd else ' '
72
<A> = '!' during the hour preceeding an daylight saving time
74
<A> = 'A' if a leap second is announced
78
<STX><dd>.<mm>.<yy>; <w>; <hh>:<mm>:<ss>; <U><S><F><D><A><L><R><ETX>
79
pos: 0 00 0 00 0 00 11 1 11 11 1 11 2 22 22 2 2 2 2 2 3 3 3
80
1 23 4 56 7 89 01 2 34 56 7 89 0 12 34 5 6 7 8 9 0 1 2
81
<STX> = '\002' ASCII start of text
82
<ETX> = '\003' ASCII end of text
83
<dd>,<mm>,<yy> = day, month, year(2 digits!!)
84
<w> = day of week (sunday= 0)
85
<hh>,<mm>,<ss> = hour, minute, second
86
<U> = 'U' UTC time display
87
<S> = '#' if never synced since powerup else ' ' for DCF U/A 31
88
'#' if not PZF sychronisation available else ' ' for PZF 535
89
<F> = '*' if time comes from internal quartz else ' '
90
<D> = 'S' if daylight saving time is active else ' '
91
<A> = '!' during the hour preceeding an daylight saving time
93
<L> = 'A' LEAP second announcement
94
<R> = 'R' alternate antenna
96
<p>Meinberg GPS166 receiver
98
You must get the Uni-Erlangen firmware for the GPS receiver support
99
to work to full satisfaction !
101
<STX><dd>.<mm>.<yy>; <w>; <hh>:<mm>:<ss>; <+/-><00:00>; <U><S><F><D><A><L><R><L>; <position...><ETX>
103
000000000111111111122222222223333333333444444444455555555556666666
104
123456789012345678901234567890123456789012345678901234567890123456
105
\x0209.07.93; 5; 08:48:26; +00:00; ; 49.5736N 11.0280E 373m\x03
108
<STX> = '\002' ASCII start of text
109
<ETX> = '\003' ASCII end of text
110
<dd>,<mm>,<yy> = day, month, year(2 digits!!)
111
<w> = day of week (sunday= 0)
112
<hh>,<mm>,<ss> = hour, minute, second
113
<+/->,<00:00> = offset to UTC
114
<S> = '#' if never synced since powerup else ' ' for DCF U/A 31
115
'#' if not PZF sychronisation available else ' ' for PZF 535
116
<U> = 'U' UTC time display
117
<F> = '*' if time comes from internal quartz else ' '
118
<D> = 'S' if daylight saving time is active else ' '
119
<A> = '!' during the hour preceeding an daylight saving time
121
<L> = 'A' LEAP second announcement
122
<R> = 'R' alternate antenna (reminiscent of PZF535) usually ' '
123
<L> = 'L' on 23:59:60
126
<p>For the Meinberg parse look into clock_meinberg.c
129
<h2>Raw DCF77 Data via serial line</h2>
130
<p>RAWDCF: end=TIMEOUT>1.5s, sync each char (any char),generate psuedo time
133
direct DCF77 code input
135
<p>In Europe it is relatively easy/cheap the receive the german time code
136
transmitter DCF77. The simplest version to process its signal is to
137
feed the 100/200ms pulse of the demodulated AM signal via a level
138
converter to an RS232 port at 50Baud. parse/clk_rawdcf.c holds all
139
necessary decoding logic for the time code which is transmitted each
140
minute for one minute. A bit of the time code is sent once a second.
143
The preferred tty setting is:
144
CFLAG (B50|CS8|CREAD|CLOCAL)
150
<h2>DCF77 raw time code</h2>
153
<p>From "Zur Zeit", Physikalisch-Technische Bundesanstalt (PTB), Braunschweig
154
und Berlin, M�rz 1989
157
Timecode transmission:
161
time marks are send every second except for the second before the
163
time marks consist of a reduction of transmitter power to 25%
165
the falling edge is the time indication (on time)
166
time marks of a 100ms duration constitute a logical 0
167
time marks of a 200ms duration constitute a logical 1
171
see the spec. (basically a (non-)inverted psuedo random phase shift)
176
0 - 10 AM: free, FM: 0
178
15 R - alternate antenna
179
16 A1 - expect zone change (1 hour before)
180
17 - 18 Z1,Z2 - time zone
183
1 0 MESZ (MED, MET DST)
185
19 A2 - expect leap insertion/deletion (1 hour before)
186
20 S - start of time code (1)
187
21 - 24 M1 - BCD (lsb first) Minutes
188
25 - 27 M10 - BCD (lsb first) 10 Minutes
189
28 P1 - Minute Parity (even)
190
29 - 32 H1 - BCD (lsb first) Hours
191
33 - 34 H10 - BCD (lsb first) 10 Hours
192
35 P2 - Hour Parity (even)
193
36 - 39 D1 - BCD (lsb first) Days
194
40 - 41 D10 - BCD (lsb first) 10 Days
195
42 - 44 DW - BCD (lsb first) day of week (1: Monday -> 7: Sunday)
196
45 - 49 MO - BCD (lsb first) Month
198
51 - 53 Y1 - BCD (lsb first) Years
199
54 - 57 Y10 - BCD (lsb first) 10 Years
200
58 P3 - Date Parity (even)
201
59 - usually missing (minute indication), except for leap insertion
205
<h2>Schmid clock</h2>
208
Schmid clock: needs poll, binary input, end='\xFC', sync start
211
The Schmid clock is a DCF77 receiver that sends a binary
212
time code at the reception of a flag byte. The contents
213
if the flag byte determined the time code format. The
214
binary time code is delimited by the byte 0xFC.
217
CFLAG (B1200|CS8|CREAD|CLOCAL)
225
<p> The command to Schmid's DCF77 clock is a single byte; each bit
226
allows the user to select some part of the time string, as follows (the
227
output for the lsb is sent first).
230
Bit 0: time in MEZ, 4 bytes *binary, not BCD*; hh.mm.ss.tenths
231
Bit 1: date 3 bytes *binary, not BCD: dd.mm.yy
232
Bit 2: week day, 1 byte (unused here)
233
Bit 3: time zone, 1 byte, 0=MET, 1=MEST. (unused here)
234
Bit 4: clock status, 1 byte, 0=time invalid,
235
1=time from crystal backup,
237
Bit 5: transmitter status, 1 byte,
238
bit 0: backup antenna
239
bit 1: time zone change within 1h
240
bit 3,2: TZ 01=MEST, 10=MET
241
bit 4: leap second will be
242
added within one hour
244
Bit 6: time in backup mode, units of 5 minutes (unused here)
248
<h2>Trimble SV6 ASCII time code (TAIP)</h2>
251
Trimble SV6: needs poll, ascii timecode, start='>', end='<',
252
query='>QTM<', eol='<'
254
<p> Trimble SV6 is a GPS receiver with PPS output. It needs to be polled.
255
It also need a special tty mode setup (EOL='<').
258
CFLAG (B4800|CS8|CREAD)
259
IFLAG (BRKINT|IGNPAR|ISTRIP|ICRNL|IXON)
264
PARSE_F_PPSPPS - use CIOGETEV for PPS time stamping
265
PARSE_F_PPSONSECOND - the time code is not related to
266
the PPS pulse (so use the time code
267
only for the second epoch)
270
0000000000111111111122222222223333333 / char
271
0123456789012345678901234567890123456 \ posn
272
>RTMhhmmssdddDDMMYYYYoodnnvrrrrr;*xx< Actual
273
----33445566600112222BB7__-_____--99- Parse
274
>RTM 1 ;* < Check
280
ELV DCF7000: end='\r', pattern=" - - - - - - - \r"
282
The ELV DCF7000 is a cheap DCF77 receiver sending each second
283
a time code (though not very precise!) delimited by '`r'
286
YY-MM-DD-HH-MM-SS-FF\r
289
FF&0x2 - DST switch warning
290
FF&0x4 - unsynchronised
293
<h2>HOPF 6021 und Kompatible</h2>
296
HOPF Funkuhr 6021 mit serieller Schnittstelle
297
Created by F.Schnekenbuehl <frank@comsys.dofn.de> from clk_rcc8000.c
298
Nortel DASA Network Systems GmbH, Department: ND250
299
A Joint venture of Daimler-Benz Aerospace and Nortel.
306
ETX zum Sekundenvorlauf ON
309
transmit with control characters
312
Type 6021 Serial Output format
314
000000000011111111 / char
315
012345678901234567 \ position
316
sABHHMMSSDDMMYYnre Actual
320
s = STX (0x02), e = ETX (0x03)
321
n = NL (0x0A), r = CR (0x0D)
323
A B - Status and weekday
328
x x x 0 - no announcement
329
x x x 1 - Summertime - wintertime - summertime announcement
332
0 0 x x - Time/Date invalid
333
0 1 x x - Internal clock used
334
1 0 x x - Radio clock
335
1 1 x x - Radio clock highprecision
349
<h2>Diem Computime Clock</h2>
352
The Computime receiver sends a datagram in the following format every minute
354
Timestamp T:YY:MM:MD:WD:HH:MM:SSCRLF
355
Pos 0123456789012345678901 2 3
356
0000000000111111111122 2 2
357
Parse T: : : : : : : \r\n
359
T Startcharacter "T" specifies start of the timestamp
360
YY Year MM Month 1-12
370
<h2>WHARTON 400A Series Clock with a 404.2 Serial interface</h2>
373
The WHARTON 400A Series clock is able to send date/time serial messages
374
in 7 output formats. We use format 1 here because it is the shortest.
375
We set up the clock to send a datagram every second.
376
For use with this driver, the WHARTON 400A Series clock must be set-up
379
Programmable Selected
381
BST or CET display 3 9 or 11
382
No external controller 7 0
383
Serial Output Format 1 9 1
384
Baud rate 9600 bps 10 96
385
Bit length 8 bits 11 8
388
WHARTON 400A Series output format 1 is as follows :
390
Timestamp STXssmmhhDDMMYYSETX
394
STX start transmission (ASCII 0x02)
395
ETX end transmission (ASCII 0x03)
396
ss Second expressed in reversed decimal (units then tens)
397
mm Minute expressed in reversed decimal
398
hh Hour expressed in reversed decimal
399
DD Day of month expressed in reversed decimal
400
MM Month expressed in reversed decimal (January is 1)
401
YY Year (without century) expressed in reversed decimal
402
S Status byte : 0x30 +
403
bit 0 0 = MSF source 1 = DCF source
404
bit 1 0 = Winter time 1 = Summer time
405
bit 2 0 = not synchronised 1 = synchronised
406
bit 3 0 = no early warning 1 = early warning
added
removed
html/parsedata.htm
