JJY
JJY
/dev/jjyu
; 9600|4800(See corresponding receiver) baud, 8-bits, no parity, 1 stop bit
This driver supports the following JJY receivers sold in Japan.
server 127.127.40.X mode 1
9600 Baud
Command | --> | Reply |
date<CR><LF> |
--> | YYYY/MM/DD WWW<CR><LF> |
stim<CR><LF> |
--> | HH:MM:SS<CR><LF> |
server 127.127.40.X mode 2
9600 Baud
Command | --> | Reply |
<ENQ>1J<ETX> |
--> | <STX>JYYMMDD HHMMSSS<ETX> |
Echo Keisokuki Co.,Ltd. LT-2000 http://www.clock.co.jp/ (Japanese only)
server 127.127.40.X mode 3
9600 Baud
Command | --> | Reply |
C |
--> | ( Mode 2 : Continuous ) |
( Every second before 0.5 second ) | YYMMDDWHHMMSS<ST1><ST2><ST3><ST4><CR> |
|
# |
--> | ( Mode 1 : Request&Send ) |
CITIZEN T.I.C. CO.,LTD. JJY-200 http://www.tic-citizen.co.jp/ (Japanese only)
server 127.127.40.X mode 4
4800 Baud
Command | --> | Reply |
( Every second ) | 'XX YY/MM/DD W HH:MM:SS<CR> |
JJY is the radio station which transmites the JST (Japan Standard Time) in long wave radio. The station JJY is operated by the National Institute of Information and Communications Technology. An operating announcement and some information are avaiable from http://www.nict.go.jp/ (English and Japanese) and http://jjy.nict.go.jp/ (English and Japanese)
The user is expected to provide a symbolic link to an available serial port device. This is typically performed by a command such as:
ln -s /dev/ttyS0 /dev/jjy0
Windows NT does not support symbolic links to device files. COMX: is the unit used by the driver, based on the refclock unit number, where unit 1 corresponds to COM1: and unit 3 corresponds to COM3:
The driver writes each timecode as received to the clockstats
file.
time1 time
time2 time
stratum number
refid string
JJY
.
flag1 0 | 1
flag2 0 | 1
flag3 0 | 1
flag4 0 | 1