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diff --git a/contrib/ntp/scripts/stats/README.timecodes b/contrib/ntp/scripts/stats/README.timecodes deleted file mode 100644 index 00b5ba5..0000000 --- a/contrib/ntp/scripts/stats/README.timecodes +++ /dev/null @@ -1,149 +0,0 @@ -Radio Timecode Formats (README.timecodes) - -Following are examples of the serial timecode formats used by various -timecode receivers as given in the instruction manuals. These examples -are intended only for illustration and not as the basis of system -design. The following symbols are used to identify the timecode -character that begins a subfield. The values given after this symbol -represent the character offset from the beginning of the timecode string -as edited to remove control characters. - -C on-time character (start bit) -Y year of century -T time of day -D day of year or month/day -A alarm indicator (format specific) -Q quality indicator (format specific) -<LF> ASCII line feed (hex 0a) -<CR> ASCII carriage return (hex 0d) -<SP> ASCII space (hex 20) - -In order to promote uniform behavior in the various implementations, it -is useful to have a common interpretation of alarm conditions and signal -quality. When the alarm indicator it on, the receiver is not operating -correctly or has never synchronized to the broadcast signal. When the -alarm indicator is off and the quality indicator is on, the receiver has -synchronized to the broadcast signal, then lost the signal and is -coasting on its internal oscillator. - -In the following uppercase letters, punctuation marks and spaces <SP> -stand for themselves; lowercase letters stand for fields as described. -Special characters other than <LF>, <CR> and <SP> are preceded by ^. - -Spectracom 8170 and Netclock/2 WWV Synchonized Clock (format 0) - -"<CR><LF>i ddd hh:mm:ss TZ=zz<CR><LF>" - C A D T - - poll: ?; offsets: Y = none, D = 3, T = 7, A = 0, Q = none - i = synchronization flag (<SP> = in synch, ? = out synch) - ddd = day of year - hh:mm:ss = hours, minutes, seconds - zz = timezone offset (hours from UTC) - - Note: alarm condition is indicated by other than <SP> at A, which - occurs during initial synchronization and when received signal has - been lost for about ten hours - - example: " 216 15:36:43 TZ=0" - A D T - -Netclock/2 WWV Synchonized Clock (format 2) - -"<CR><LF>iqyy ddd hh:mm:ss.fff ld" - C AQY D T - - poll: ?; offsets: Y = 2, D = 5, T = 9, A = 0, Q = 1 - i = synchronization flag (<SP> = in synch, ? = out synch) - q = quality indicator (<SP> < 1ms, A < 10 ms, B < 100 ms, C < 500 - ms, D > 500 ms) - yy = year (as broadcast) - ddd = day of year - hh:mm:ss.fff = hours, minutes, seconds, milliseconds of day - l = leap-second warning (L indicates leap at end of month) - d = standard/daylight time indicator (<SP> standard, D daylight) - - Note: alarm condition is indicated by other than <SP> at A, which - occurs during initial synchronization and when received signal has - been lost for about ten hours; unlock condition is indicated by - other than <SP> at Q, with time since last lock indicated by the - letter code A < 13 min, B < 1.5 hr, C < 7 hr, D > 7 hr. - - example: " 92 216 15:36:43.640 D" - AQ D T - -TrueTime 468-DC Satellite Synchronized Clock (and other TrueTime -receivers) - -"<CR><LF><^A>ddd:hh:mm:ssq<CR>" - D T QC - - poll: none; offsets: Y = none, D = 0, T = 4, A = 12, Q = 12 - hh:mm:ss = hours, minutes, seconds - q = quality/alarm indicator (<SP> = locked, ? = alarm) - - Note: alarm condition is indicated by ? at A, which occurs during - initial synchronization and when received signal is lost for an - extended period; unlock condition is indicated by other than <SP> - at Q - - example: "216:15:36:43 " - D T Q - -Heath GC-1000 Most Accurate Clock (WWV/H) - -"<CR>hh:mm:ss.f dd/mm/yy<CR>" - C T A D - - poll: none; offsets: Y = none, D = 15, T = 0, A = 9, Q = none - hh:mm:ss = hours, minutes, seconds - f = deciseconds (? when out of spec) - dd/mm = day, month - yy = year of century (from DIPswitches) - - Note: 0?:??:??.? is displayed before synch is first established and - hh:mm:ss.? once synch is established and then lost again for about - a day. - - example: "15:36:43.6 04/08/91" - T A D Y - -PST/Traconex 1020 Time Source (WWV/H) (firmware revision V4.01) - -"frdzycchhSSFTttttuuxx<CR>" "ahh:mm:ss.fffs<CR>" "yy/dd/mm/ddd<CR>" - A Q T Y D - - poll: "QMQDQT"; offsets: Y = 0, D = 3 T = 1,, A = 11, Q = 13 - f = frequency enable (O = all frequencies enabled) - r = baud rate (3 = 1200, 6 = 9600) - d = features indicator (@ = month/day display enabled) - z = time zone (0 = UTC) - y = year (5 = 1991) - cc = WWV propagation delay (52 = 22 ms) - hh = WWVH propagation delay (81 = 33 ms) - SS = status (80 or 82 = operating correctly) - F = current receive frequency (1-5 = 2.5, 5, 10, 15, 20 MHz) - T = transmitter (C = WWV, H = WWVH) - tttt = time since last update (minutes) - uu = flush character (03 = ^C) - xx = 94 (unknown) (firmware revision X4.01.999 only) - - a = AM/PM indicator (A = AM, P = PM, <SP> - 24-hour format) - hh:mm:ss.fff = hours, minutes, seconds, milliseconds of day - s = daylight-saving indicator (<SP> standard, D daylight) - - yy = year of century (from DIPswitches) - dd/mm/ddd = day of month, month of year, day of year - - Note: The alarm condition is indicated by other than ? at A, which - occurs during initial synchronization and when received signal is - lost for an extended period. A receiver unlock condition is - indicated by other than "0000" in the tttt subfield at Q. - - example: "O3@055281824C00000394 91/08/04/216 15:36:43.640" - T Y D T - -David L. Mills -University of Delaware -mills@udel.edu -23 October 1993 |
