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τ
Model 5383A
M
ai n te n a n ce
Table 5-1 . In-Cabinet
P
e r fo r ma n ce
C
h eck (Con ti n
u
ed)
2 .
LOO P-AROUND (S ELF -C HEC K)
α .
(Stand a rd
Co u nter
only)
set
th e
coun ter
rea r
pa n el
ΙΝΤ/ ΕΧΤ
switc h
to
th e ΙΝΤ
p
ositio n .
b .
Set th e coun te r fro nt
p
a n el I NPU T switc h to 50 Ω Χ 1 .
c .
Co nn ect α coaxial ca b le betwee n
t
h e
r
ea r pa n el con necto r
a
nd
t
he fron t
p
a n el
con n ecto r.
d.
Th e co unte r d isp lay sh o ul d
i
nd icate 10 MHz ±1 cou nt i n all GAT E TIME switch
positions .
e .
O b tai n α 50 Ω
F
ee d thru connector (HP 11048C or eq u ivale n t) .
f.
Disco nn ect t he coaxial cable from t h e f r on t
p
anel I NPU T con n ecto r
a
nd reco nn ect
to I NPU T via α 50ΩFeedt hru co nnecto r .
9 .
3 .
S
EN SITIVITY
Th e co un te r dis p lay s h ou l d
i
nd icate 10 MHz ±1 co un t in t he 1 ΜΩ Χ 1
a
nd
t
he 1 ΜΩ Χ10
I
NPU T switch positio n s.
α . Obtai n
t
h e followi n g test equ ipme n t:
HP 11048C or eq uivale n t 50 Ω
F
eedthru co nn ecto r
HP 8654Β Signal Gener ato r
o
r e quivale n t
HP 651 Β Test Oscillato r
o
r equ ivalent
b .
Co nn ect α coaxial ca b le between
t
h e o u tpu t of t h e test e qu i p men t an d
t
h e 5383Α
f ront
p
an el I NPU T co nn ecto r .
c.
Set up switc hes, test equ ipmen t, a nd
t
h e 5383 Α as
d
esc r ibe d in Table Α.
O
b serve
t h at th e co unte r d isp lays t h e correct frequ e n cy, an d
t
h at th e dis play is stable (see
NOTE) .
TABLE Α
T EST
E
Q U IPMENT
F
REQUEN CY
O UT PUT LEVEL
5383Α INPUT
(RMS)
SW ITC H POSITIO N
HP 8654Β or
512 MH z
50 mV
50 Ω Χ1
e
q uivale n t
100 MHz
25 mV
50Ω Χ1
50
MHz
50 m V
*1 ΜΩ Χ1
10 MHz
25 m V
*1 ΜΩ Χ 1
HP 651 Β
o
r
20 Hz
25 m V
*1 ΜΩ Χ 1
a
nd 50 Ω Χ 1
equ ivalen t
10 Hz
25 m V
*1 ΜΩ Χ1
*Thro ug h α 50Ω
F
eed thru co nn ecto r .
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