xref: /freebsd/contrib/ntp/clockstuff/README (revision 416ba5c74546f32a993436a99516d35008e9f384)
1c0b746e5SOllivier RobertREADME file for directory ./clockstuff of the NTP Version 4 distribution
2c0b746e5SOllivier Robert
3c0b746e5SOllivier RobertThis directory contains the sources for utility programs designed to
4*2b15cb3dSCy Schubertsupport radio clocks.  chutest.c is desgined to test the depredated
5*2b15cb3dSCy Schubertchu_clk line discipline or STREAMS module and can also test a CHU
6*2b15cb3dSCy Schubertmodem in raw mode.
7c0b746e5SOllivier Robert
8*2b15cb3dSCy SchubertYou can make things in here by typing one or more of:
9c0b746e5SOllivier Robert
10c0b746e5SOllivier Robert	make propdelay (or `make')
11c0b746e5SOllivier Robert	make chutest
12c0b746e5SOllivier Robert
13c0b746e5SOllivier RobertPropdelay computes high frequency propagation delays, given the
14c0b746e5SOllivier Robertlongitude and latitude of the transmitter and receiver.  Use
15c0b746e5SOllivier Robertthis for WWV/H and CHU.  Don't use it for WWVB (the computation
16c0b746e5SOllivier Robertis easier for that).
17c0b746e5SOllivier Robert
18c0b746e5SOllivier RobertChutest can be used to input and process data from a CHU modem
19c0b746e5SOllivier Robertattached to a serial port.  It will use the CHU line discipline
20c0b746e5SOllivier Robert(if installed), or raw mode otherwise.  This was used to test
21c0b746e5SOllivier Robertout the initial reduction algorithms, and may not be up to date.
22