Symmetricom SyncServer S100 User Manual page 120

gpsst strengt gps
Tasks Tasks
Press s ent Pres enter er to to te termi
an and d fi find nd th the e la larg rges est t co cont ntig iguo uous us se sect ctio ion n of of al all l ze zero ros. s. Cou
di divi vide de by by 36 3600 00 (s (sec ec/hr
For ex exam For ampl ple: e: if if yo your ur ma
to to an an ou outa tage ge of of 10 10,8 ,800 00/3 /360 600 0 or or 3 3 ho hour urs. s. If If yo your ur Sy
error r wou erro would ld be be 0. 0.87 875m
os osci cill llato ator, r, the
Note: Note: To To min
purch chas asin ing g Syn pur
Rub Rubid idiu ium m os osci cill llato
GPS sa sate tell llit ite e ou outag GPS
GPS rec GPS recei eive ver r nee
remo remove ve the the acc
Setting the Time Manually Setting the Time Manually
The e Sy Th Sync ncSe
reasons reas ons, , suc
Distributing Distributing approxi
n n
Intenti Intentionally
n n
Also Also see: see:
34). 34).
In In mo most st ca case ses, s, th the e us user er se sets ts th the e ti time
The The Hardware Hardware Cloc
n n
NTP NTP as asso soci ciati ations
n n
Note: e: In In th the e fo foll llowi Not
in inst stea ead d of of 06 06:00
Using the web interface Using the web interface
1. 1. O On n th the e
2. 2. Set
Set
Forced Fo
3. 3. En Ente ter r th the e UTC
4. 4. Click
Click
APPLY APPLY
Note: Onc Note: Once e
Refere Ref erenc nces es un unti til l th the e us user er se sets ts
ci ciati ations ons are are av avai aila labl ble, e, th the e Syn
in inst stea ead d of of th the e Hard
Using the Command Line Using the Command Line
1. 1. Lo Log g in in to to th the e co comm
2. 2. Ent Enter er th the e
x.y x.y
n n
rength h paus pause e 100 1000 0 repe repeat at 1000
99 997-0 7-015 1520- 20-03 03 Rev Rev. . A A ..........................................................................
rmina nate te the the sc scrip ript. t. Now
/hr) ) and and mu mult ltip iply ly by by th the e dri drift ft rat
max x nu numb mber er of of co cont ntig iguou
5ms/ s/hr hr * * 3 3 hrs hrs or or 2.6
the ti time me erro error r wou would ld be be 0. 0.001
minimi imize ze the the acc accumu umulat lated ed tim
SyncSe cServ rver er wit with h th the e Rub Rubid idiu ium m os osci cill llato
ator r ca can n ma main inta tain in ti time
tages es of of one one mo mont nth. h. Ge
needs ds to to tra track ck a a sa sate tell llit ite e co cont ntig iguou
accumu umulat lated ed tim time e error. error.
Serv rver er ha has s fe feat atur ures es fo for r se sett ttin ing g th the e ti time
such h as: as:
approximate mate UTC UTC time.
onally distri distributing buting non-UTC non-UTC time.
Distributing Non-UTC Time Distributing Non-UTC Time
me ma
Clock's k's Inp Input ut Refere Reference
ons th that at are are ca capa pabl ble e of of pro
owing ng in inst struc ructi tions ons, , en enter
:00 PM, PM, en ente ter r 18 18:0 :00. 0.
pag page, e, en enter
TI TIMI MING NG - HW - HW Clo Clock ck
to to
rced Ti Timin ming g Sou Source rce Free Run Free Run
UTC da date te an and d ti time me. .
. .
i is s s s et et to to
Fo Forced rced Ti Timin ming g Sou Source rce
Fo Forced rced Ti Timin
SyncSe cServe rver's r's NTP
Hardware ware Clo Clock ck. .
mman and d li line ne in inte terf rfac ace. e.
SETTIMEOFYEAR SETTIMEOFYEAR co comm mmand
100000 00
..........................................................................
Now pl plot ot th the e fi firs rst t fi fiel eld d in in ea each ch li line ne (to
Count nt th the e nu numb
rate e of of yo your ur os osci cill llat ator or (m
uous s 'ze 'zero' ro' da data ta po poin ints ts is is 10,
Sync ncSer Serve ver r ha has s a a TCX
2.625 25 mi mill llis isec econd onds. s. If If yo your ur Syn
001ms ms/h /hr r * 3 * 3 hrs hrs or or 0.0 0.003 03 mi mill llis isec econd
time e error error duri during ng out outages ages, , Sym
ator r op opti tion on. . A A Syn
me to to bet bette ter r tha than n on one e mi mill llis isec econd
Gener neral ally ly, , fo for r ou outa tages ges lo long nger er th than an se seve veral ral ho hours
uousl sly y for for se seve veral ral ho hours
me ma manu nual ally ly. . Th
time.
time.
(o (on n pa page ge 11 111) 1) an and d
manua nuall lly y when when: :
nces s aren aren't 't ava availa ilable ble. .
provi vidi ding ng ti time me to to the the Syn
ter UTC UTC ti time me us usin ing g th the e 24-
ter th the e UTC UTC da date te and and ti time
. .
, , th the e Har Hardwa dware re Cl Cloc ock k do does esn't n't us use e th the e In Inpu put t
Free Run Free Run
bac back k to to
ming g Sou Source rce Auto Auto
NTP da daem emon on ma may y sy sync nchro
and fol follo lowed wed by by the the ti time me in in on one e of of th the e fo foll llowi
(tota tal l sa sate tell llit ites es tra track cked ed) )
mber er of of ze zero roes es in in a a ro row, w,
(ms/ s/hr). hr).
10,80 800 0 th this is is is equ equiv ival alen ent t
TCXO O os osci cill llat ator or, , th the e ti time
SyncSe cServ rver er has has a a Rub Rubid idiu ium m
onds. s.
Symmet metric ricom om reco recomm mmends
SyncSe cServe rver r equ equip ippe ped d wit
ond ac accu curac racy y to to UTC UTC wit
urs, , th the e
urs to to ac acqu quire ire ti time me and
Thes ese e ca can n be be us used ed fo for r a a va vari riet ety y of
(on pag (on
TIM TIMING ING - HW Clock - HW Clock
SyncSe cServ rver er are aren't n't av avai aila labl ble. e.
24-hou hour r fo forma rmat. t. For For ex exam ampl ple, e,
me. .
. . If If sy sync nchro hroni nizi zing ng NTP NTP as asso so- -
hroni nize ze wit with h one one of of th them
owing ng fo forma
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rmats ts: :