--- driver40.html-original 2009-05-03 16:29:38.000000000 +0900 +++ driver40.html 2009-05-03 13:53:16.000000000 +0900 @@ -5,7 +5,10 @@ + JJY Receivers + + @@ -13,122 +16,174 @@

JJY Receivers


Synopsis

- Address: 127.127.40.u
- Reference ID: JJY
- Driver ID: JJY
- Serial Port: /dev/jjyu; 9600 baud, 8-bits, no parity, 1 stop bit + Address: 127.127.40.u
+ Reference ID: JJY
+ Driver ID: JJY
+ Serial Port: /dev/jjyu; 9600|4800(See corresponding receiver) baud, 8-bits, no parity, 1 stop bit

Description

This driver supports the following JJY receivers sold in Japan.

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:

+

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:

Monitor Data

-

The driver writes each timecode as received to the clockstats file.

+

The driver writes each timecode as received to the clockstats file.

Fudge Factors

-
time1 time +
time1 time
Specifies the time offset calibration factor, in seconds and fraction, with default 0.0. -
time2 time +
time2 time
Not used by this driver. -
stratum number +
stratum number
Specifies the driver stratum, in decimal from 0 to 15, with default 0. -
refid string -
Specifies the driver reference identifier, an ASCII string from one to four characters, with default JJY. -
flag1 0 | 1 +
refid string +
Specifies the driver reference identifier, an ASCII string from one to four characters, with default JJY. +
flag1 0 | 1
Not used by this driver. -
flag2 0 | 1 +
flag2 0 | 1
Not used by this driver. -
flag3 0 | 1 +
flag3 0 | 1
Not used by this driver. -
flag4 0 | 1 +
flag4 0 | 1
Not used by this driver.

- \ No newline at end of file +