HP 5065A Manual page 18
Rubidium vapor frequency standard
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- Operating and service manual (69 pages) ,
- Operating and service manual (355 pages)
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Model 5065A
Circult Oiagnuns, Theory, A.nd Maintenance
Tab\P 3-3 hequency O!tset Change 1:-lstructiOflS
Remove instrument top cover and note setting of
TIME SCALE thumbwheet and pos1tion ot HI-LO
switches. necord this information in ltt:m 1
NOTE
Be certain to include the correct algebraic
sign(+- or-!
with
the numbers used in the
following calculations.
2.
Locate thurnbwheel switch sntting in Table 3-7
and record tt1e corresponding Offset x
10~10
value
in (tem 1 under Offset :x
·to" . .
to,_
3
Record the desired change in offset under !tern 2
in the space pro vi de d.
~
Algebraically
add
the sum of ltem 1 and 1tern 2
OffsPt x 10
H)!
and record the total in Item 3.
5
Locate the
nBc-nest
Offset"< ·10- 10
in T abfe
3-7
that
corresponcJs to
the total offset recorded in Item 3
FlecorcJ this
offset
tts
corresponding TW switch
sctt1r:q,
and
Hl~LO
switcn settmg
under !tern 4 in
the approprr'at() S['.'!<tcns
provided
r;
A!qeLnaicn!ly subtract !tern 4 !rom \tum 3 ancl
rocotd this r-r-r11aininq Fr·.;-;quency Of!s(::t in !tern 5
Div:;J;_~
liw
rr-n·:·Jarr1(h'1C
rGcorclnd rn I
tern~)
by 2 and
r(_'CfJrtJ the
:-wswc:r
in !tern 6
NOTE
The,
(Jtc ~~\10n r. 1
Step
i~:-;
pcrle;rrned to
CCJn-
,,en
~-~'e !teq:H·!r~t:y
offset tube:
(.,Jrrec\~:~d
!1y
th\CI'JF'T!C
IEJ~D
i\I'),Jl.J~)lt'v·;[NT
:nto
j!'cnt~
pdrH;i
Mf\.CiNf::TiC Fi!:.LO
con·~
! :"())
SC'
I!
I
r: 9
b
Not(·
pn~~wnt
fron! panel MAGNETIC FlF.LD con··
!rol :-Jetting anrt record this
st.~ttinq
n1
IU!rTl
7
9
AICJ<Ob'ill<:ally
add the new MAGNETIC FIELD
control settinq from the setting recorc1ed m Item 7
R(:cord tt-ds total
in
Item 8.
NOTE
If tht: addition performed in Step
9
g1ves a
negative number or a number greater than
10, U1e synthesizer setting selected in
l!em
4
must
be changed. Select
tt1e
adla-
cent
oflset
from Table 3·7
closest
to
total
offset recorded in Item
3,
and record this
new information in
Item
4. Repeat Steps 5
through 9 using the new data.
See
example, Table 3-4.!
.,
10. Record !tern 4 and !tem .. 8 information in spaces
provided under Item 9.
11
Set
Synthesizer Assembly A1, TIME SCALE
tllurnbwhee!
switc!l to
the
new
setting
recorded
1n Item
9a.
12. Set Synthesizer
Assc~mbly
A 1. Hi-LO switch tu tho
positiOn re-corded rn Item 9b Replace instrument
top cover.
13.
Adjti'·~t
front panel M!' . . . . GNETIC FIELD control to
the c;ettinSJ
rec:C·nded in
Item
9c: Tt1en
pertonn
Freq:Jency Offset at1CI
Calibration
i
par.ag.r8ph
:·3·10 aqain to all9n
tilE:
50G~\A
with tlle refernnce
:;tandB.! d_
14
Set
:ront
pam:i
CI1'=1CUIT CHFCK sw1tctl tu CON·
TF-H>L. :1nd slowly ,:HJj!JSl ClSC FnEO COARSF.
·'lr)i
lor
C!FiClJIT C!--lf':'C.:K
iTlt:!or
ir1clication
()f
T'
h
If
CONTINUOUS
OPC:T\1\.TiON
lamp is off. wa1\ 2
rnii:tJlc-s,
thc;n
n\OI!ll~ntanly
JHGs~;
front
pam~l
LOGIC RESET button. CONTINUOUS
OPDl-
/\110N !arnp shO\ild come on and stay on. The
SOfl5A oHset has bocn ct1anged and the instru-
mr'!'lt
is operatin9 normally
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