Wavetek 3001 Instruction Manual page 164

INTROD UCTIO N
O ption 6
p
rovi des α high-stability rea r-panel outpu t whic h
can
b
e used to
d rive the rear-panel input of Option 5. Th is
hig hstability TT L
o
utpu t can also
b
e use d to drive othe r
devices whic h requ ire α hig h -sta b ility refere n ce inp ut .
M
aximu m fan-out is four .
SPE CI FICATIO NS
- Output F req ue ncy 5 MH z
O utpu t Level
TT L
Te mp Stability (11 hr . warm-up
over 10 ° to 40° C range. 0.05 μριη
Agi ng 0.005
p
ρ
m
l
d
ay
0.05 ppm
J
mo .
0.3
ppm
ly
r .
Ty p ical Overall Accuracy
(wit hin 3 months of cali bration) 0.2 ppm
OPERATION
OPTION 6
H
IG H -STA B I L ITY R EFE R EN CE
Optio n 5 (External
R
eferencel is necessary for dr iving α
W
avetek 3000 Series instrument with
t
his
H
ig h Stability
R
eference . The instrum ent Wi ring Diag ram (Sche
m
atic 1)
and
t
he instrument Top
V
iew (F igure 5-6 shows the
incorp oratio n of this option into the unit .
T
he necessary
ci rcuitry is housed in
t
h
e Μ40 mo dule.
An RF cable ta kes the High Stability
R
eference output
(5 MHz) to α
r
ear-pa nel BN C connector . A not h e r ca ble
connects th is output to the
E
xternal
R
eference i np ut of
Option 5, th us
r
eferencing the instrume nt's Crystal
R
eference to the
H
ig h Stability
R
eference .