Symmetricom SyncServer S100 User Manual page 38

Web Web Inte Interfac
st strat ratum um 1 1 when
n n
ho hold ldov over er mo
s s tr trat atum um 2 2 th thro roug ugh h 15 15 whe
n n
st strat ratum um 16 16 whe
n n
timing ng informat timi
The se sett ttin ings gs on on the The
precision: Thi precision:
on onds ds to to th the e ne near ares est t po power
upp upperm ermos ost t 18 18 bi bits ts of of th the e ti time
the the mic micros roseco
root distance (also
root distance
th the e sy sync nchro hroni niza zati tion on tre
si sinc nce e th the e Syn
pri priat ate e va valu lue e is is di disp spla laye yed. d. Depe
iti itive ve or or nega negativ tive. e.
root dispersion: root dispersion: Th
to to th the e pri prima mary ry ref
posit itiv ive e va valu lues es gre pos
reference ID: Thi reference ID:
iz izat atio ion, n, whi while le th the e st stra ratu tum m is is 16 16, , th this is fi fiel eld d s s ho hows
fi fiel eld d wil will l st star art t wi with th a a va valu lue e of of INI
va valu lues es). ). On Once ce a a pe peer er ha has s be been en se sele lect cted ed, , th the e cl cloc ock k ma
ere erenc nce e ID ID fi fiel eld d wil
be be upd updat ated ed and
operat ope ratin ing g at at st strat
(e (e.g .g., ., GP GPS, S, IRI
er eren ence ce ID ID wil
betwee bet ween n th the e Syn
reference time reference time (also
an an upd updat ate e fro
lo loca cal l cl cloc ock k has
to to a a lo loc c al al ti time
on onds ds fo for r a a lo loca call lly y at atta tach ched ed ha hard rdwar
1024 4 se seco conds 102
system flags: The system flags:
Serv Server. er. The The def
kernel: kernel: The
n n
adjtim adj time()
monitor: monitor: The
n n
ntp: ntp: Ena Enabl bles es th the e se serv rver er to to ad adju just st it its s lo loca cal l cl cloc ock k by by me
n n
stats: The stats:
n n
auth: auth: The
n n
Pag Page e 26 26 ..........................................................................
rface e
when the the Hard Hardware ware Clo Clock ck (st
mode de, , or or in in fre freeru erun n mo mode.
when n it it is is sy sync nchr hron oniz ized ed to to a a re remo
when n it it is is un unsy sync nchro hroni nize zed, d, in indi dica cati ting ng tha
information. ion.
the (on (on pa page ge 33)
NTP - Prefs NTP - Prefs
This s is is a a si signe gned d in inte tege ger r in indi dica cati ting ng th the e pre
wer of of two two. . A A ty typi pic c al al v v al alue ue is is -1 -18 8 fo for r a a Har
me st stam amp p fra
econd nd range range. .
(also root delay root delay ): ): Th Thi i s s i i s s a a me
tree. e. A A ty typi pica cal l va valu lue e fo for r a a Syn
SyncSe cServ rver er is is a a roo root t of of th the e sy sync nchro
Depend ndin ing g on on cl cloc ock k sk skew
Thi i s s i i s s a a s s ig igned ned fix fixed-p
refere erenc nce e so sourc urce e at at th the e roo
greate ater r th than an ze zero ro are are pos
This s is is a a fo four-b ur-byt yte e fi fiel eld d us used ed to to id iden enti tify fy th the e ref
INIT T (m (may ay be be di disp spla lay y ed ed as as 73 73.7 .78. 8.73 73.8 .84, 4, th the e ASCI
will l ch chan ange ge to to STEP STEP (or
and the the ref refere erenc nce e ID ID wil will l id iden enti tify fy th the e se sele lect cted ed pe peer.
ratum um 1, 1, th the e ref refere erenc nce e ID ID wil
IRIG, G, FRE FREE). E). In In th the e ca case se whe
will l di disp spla lay y th the e IP IP ad addr dres ess s of of th the e s s er erve ver r or or a a ha hash sh un uniq ique ue to to th the e as ass s oc ocia iati tion on
SyncSe cServe rver r an and d th the e rem remote
(also reference timestamp reference timestamp ): ): The
from m th the e se sele lect cted ed pee peer. r. Repr Repres esent
has nev never er be been en sy sync nchro hroni nize zed, d, th the e va valu lue e is is ze zero.
me of of Th Thu, u, Fe Feb b 7 7 20 2036 36 6: 6:28 28:1 :16. 6.00 000. 0. Th
ware e re refe fere renc nce e (e (e.g .g., ., GP
nds fo for r a a rea readi dily ly ac acce cess ssib ible le rem
These se fl flag ags s def defin ine e the
defin init itio ion n of of th the e va varia riabl bles es is is pro
The NTP NTP da daem emon on is is en enab able led d fo for r th the e pre
e() sy syste stem m cal call. l.
The NTP NTP da daem emon on is is en enabl
The NTP NTP daem daemon on is is ena enabled
The NTP NTP daem daemon on is is ena enable
..........................................................................99 997-0
(strat ratum um 0) 0) is is sy sync nchro hroni nize zed d to to an an in inpu put t ref
de.
mote te NTP
that t it it is is se searc
33) pa page ge aff affec ect t st strat
preci cisi sion on of of the
fract ctio ional nal co comp mpone onent nt ha have ve va valu lue, e, in indi dica cati ting ng a a pre
meas asur ure e of of th the e to tota tal l ro roun und d tr trip ip de del l ay ay to to th the e ro root ot of
SyncSe cServ rver er ope operat
hroni niza zati tion on tre tree e For For oth
ew and and di disp spers
ed-poin oint t num number ber ind indic icati ating ng the
root t of of th the e sy sync nchro hroni niza zati tion on su subne
possi sibl ble. e.
refere
ws th the e pr prog ogre ress ssio ion n of of th the e NTP
may y be be st step eppe ped, d, in in whi
(or 83. 83.84 84.69 .69.8 .80). 0). On Once ce th the e PLL
will l di disp spla lay y the the so sourc urce e fo for r th the e lo loca cal l ti timi ming ng ref
where re th the e se sele lect cted ed pe peer er is is an anot othe her r NTP
ote se serve rver. r.
The ti time me whe when n th the e Syn
ented ed us usin ing g ti time me st stam
ro. A A ti time
This is v v al alue ue is is ty typi pic c al ally ly up upda date ted d ev ever ery y 16 16 se sec- c-
GPS, S, IRI IRIG G ) ) an and d in in an an in inte terv rval al of of 64 64- -
remot ote e NTP NTP se serv rver. er.
the co confi nfigur gured ed beh behav avio ior r NTP NTP dae
provi vide ded. d.
preci cisi sion- on-ti time me ke kerne
abled ed it its s mo moni nito torin ring g fa faci cili lity ty. .
mean ans s of of NTP
bled its itsst stati atisti stics cs fac facili ility. ty.
bled d its itsaut authent hentic icati ation on fac facili ility. ty.
refere erenc nce, e, in in
NTP se serv rver er. .
archi hing ng fo for r a a va vali lid d so sourc urce e of
ratum um beh behav avio ior. r.
the se sele lect cted ed pe peer er cl cloc ock, k, in in se sec- c-
Hardwa dware re Clo Clock ck whe where re th the e
preci cisi sion on in in
ratin ing g at at st strat ratum um 1 1 wou would ld be be 0 0
other er st strat ratum um le leve vels ls, , an an ap appro
ersio ion, n, thi this s va valu lue e co coul uld d be be po pos- s-
the max maximu imum m error error rela relativ tive e
bnet, t, in in se seco conds nds. . On
erenc nce e cl cloc ock k so sourc urce. e. At At in init itia ial- l-
NTP c c lo lock ck PLL PLL. . Th
ASCII I de deci cima mal l
which ch ca case se th the e re ref- f-
PLL is is lo lock cked ed, , th the e st strat ratum
er. In In th the e ca case se of of a a Syn SyncSe cServe
refere erenc nce e
NTP se serv rver er, , th the e re ref- f-
SyncSe cServ rver er la last st rec recei eive ved d
amp p fo forma rmat t in in lo loca cal l ti time me. . If If the
me st stam amp p of of ze zero ro co corre rresp spond
daemo mon n run runni ning ng on on the the Syn
rnel l su suppo pport rt fo for r th the e nt ntp_
NTP. .
7-0152 1520-0 0-03 3 Rev Rev. . A A
of
of
pro- -
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um wil will l
rver r
the
onds s
Sync- c-
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