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
Page e 107
Pag
107
me
ends
with h a a
with h
and
of
page e
em
rmats ts: :
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