Symmetricom SyncServer S100 User Manual page 144

Glossary Glossary
This is is an an eig This
mes s sa sage ges s , , in in se seco cond nds s , , to to th the e ne near ares est t po power me
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Precision Precision
This s is is an an ei eigh ght-b Thi
to to th the e ne near ares est t po power
on one e µs µs. . Th The e pr prec ecis isio ion n is is no norm
of of se seve veral ral it itera
Root Delay Root Delay
This s is is a a 32 32-bi -bit t uns Thi
er eren ence ce cl cloc ock, k, in in s s ec econ onds ds, , wit
positive. positive.
Root Dispersion Root Dispersion
This s is is a a 32 32-bi -bit t uns Thi
er eren ence ce cl cloc ock, k, in in s s ec econ onds ds, , wit
positive. positive.
Reference Refe rence Identifier
This s is is a a 32 32-bi -bit t co code de id iden enti tify fyin ing g the Thi
depen ends ds on on th the e va valu lue e in in th the e st strat dep
le left ft-ju -just stif ifie ied, d, ze zero-
us used ed as as ASCII ASCII id ident
GOESGeosynchronous Orbit Environment Satellite GOESGeosynchronous Orbit Environment Satellite
GPSGlobal GPSGlobal Positio
PPSGeneric pulse-per-second PPSGeneric pulse-per-second
IRIGInter-Range Instrumentation Group IRIGInter-Range Instrumentation Group
WWVBLF Radio WWVB, Ft. Collins, CO, 60 kHz WWVBLF Radio WWVB, Ft. Collins, CO, 60 kHz
DCF7LF Radio DCF77, Mainflingen, DE, 77.5 kHz DCF7LF Radio DCF77, Mainflingen, DE, 77.5 kHz
MSFLF Radio MSF, Rugby, UK, 60 kHz MSFLF Radio MSF, Rugby, UK, 60 kHz
JJYLF Radio JJY, JJYLF Ra
JJYLF Radio JJY, Saga, JP, 60 kHz JJYLF Radio JJY, Saga, JP, 60 kHz
WWVHF Radio WWV, Ft. Collins, CO WWVHF Radio WWV, Ft. Collins, CO
WWVHHF Radio WWVH, Kaui, HI WWVHHF Radio WWVH, Kaui, HI
NISTNation NISTNa tional al Institut
PTBPhysikalisch-Technische Bundesanstalt telephone modem PTBPhysikalisch-Technische Bundesanstalt telephone modem
For st strat For rata a 2-1
te tem m pee peer r is is us usin ing g th the e IPv
sy syst stem em pe peer er is is us usin ing g th the e IP IPv6 v6 ad addr dres ess s fa fami mily ly, , it it is is th the e fi firs rst t fo four ur oc octe tets ts of of th the e MD
IPv6 addr IPv6 address
99 997-0 7-015 1520- 20-03 03 Rev Rev. . A A ..........................................................................
eight-b ht-bit it si signed gned int integer eger repre represen
t-bit it si signe gned d in inte teger ger rep repres
wer of of 2. 2. Fo For r in inst stan anc c e, e, a a va valu lue e of of −18
rmal ally ly me meas asur ured ed by by NTP
erati tions ons of of th the e ti time me to to rea read d th the e sy syst stem
unsig igned ned fi fixe xed-p d-poi oint nt nu numb
with h th the e ra radi dix x po poin int t be betwe
unsig igned ned fi fixe xed-p d-poi oint nt nu numb
with h th the e ra radi dix x po poin int t be betwe
Identifier
the par
ratum um fi fiel eld. d. For
ro-pad padde ded d ASCII ASCII st strin ring g as assi signe
entif ifie iers rs: :
Positionin ning g System System
dio JJY, Fuk Fukush ushima, JP, ima, JP, 40 kHz, 40 kHz,
Institute e of Sta of Standards a ndards a nd Tec
2-15 5 se seco cond ndary ary se serv rvers ers, , thi this s is is th the e ref
IPv4 4 ad addre dress ss fa fami mily ly, , th the e id ident
ess. .
..........................................................................
sentin ting g the the max maximu imum m int interv
wer of of 2. 2. Th The e va valu lues es ca can n ra rang nge e fr from
resent entin ing g the the pre preci cisi sion on of of th the e sy syst stem
−18 co corre rres s po pond nds s to to a a pr prec ecis isio ion n of of ab abou out t
NTP at at st star artu tup p an and d is is de defi fine ned d as as th the e mi mini nimu
em cl cloc ock. k.
mber er in indi dica cati ting ng the the tot total al rou
tween en bi bits ts 15 15 an and d 16 16. . Th
mber er in indi dica cati ting ng the the ma maxi ximu
tween en bi bits ts 15 15 an and d 16 16. . Th
parti ticu cula lar r se serv rver er or or ref refere erenc nce e cl cloc ock. k. The
For st strat ratum um 1 1 (re (refer ferenc
gned d to to th the e rad radio io cl cloc ock. k. The
nd Techno hnology telephon logy telephone e mod
refere erenc nce e id ident entif ifie ier r of of the
entif ifie ier r is is th the e fou
Pag Page e 131
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