HP 435B Service Manual

O pe rat i o n

M o d e l 435 Β
3-6
O PER
ATO R 'S C HE C KS
1 . BEF O RE S W IT C
HIN G ON THI S IN
S
TRUMENT, c h ec k t h at t h e p owe r t r an s fo rm e r pr im a ry
i
s
m
atc
h
e
d
to t
h e
a
v a il a bl e lin evo l tage, t h eco rr ect fuse i sin sta ll e da nd t h e saf et y pr eca u t
i o
n s a
r
e
ta
k
e
n .
See
P owe r R equire m e n ts, Lin e V o l tage Se l ect i o n , P owe r Ca bl es a nd associated wa r n in gs
a
nd
ca
u t i o n s in sect i o n
II
.
WA RN I N GS
BEF
O
RE CONN E CT I NG LINE PO W ER TO T HI S
I NST R U ME NT, e n sure t h at all devices co nn ecte d to
this in st rum e n t a re co nn ecte d to t h eprotective (ea r t h )
g ro und .
BEF O RE SW I TC HIN G ON T HI S I NST R U ME NT, e n-
sure t h at t h e l i n e p owe r (M a in s) p lu g i s co nn ecte d to α
t hr ee-co ndu cto r lin e p owe r o u t l et t h at h as a protective
(ea r t h ) g r o und . (Grounding o n e co ndu cto r of α two-
co ndu cto r o u tl et i s n ot sufficient .)
CA U TIO N
D o n ot tw i st t h e bo dy of t h e p owe rse n so r w h e n co nn ect-
in g o r di sco nn ect in g i t . T his ca n ca u se m ajor d a m age to
t h e p owe r se n sor .
2 .

Set t h e m eter indi cat i o n to zero wi t h t h e m ec ha ni ca l m ete r z e ro co
n
t r o
l . B
ac
k t h
e
co n t ro l o ff
s li gh t ly .
3 .

Conn ect t h e p o w e r se n so r to t h e P o w er M ete r w it h t h e p owe r se
n
so
r
ca
bl e .
4 .

Conn ect t h e p owe
r
ca bl etot
h
e p
o w
ero u t l et a nd po
w
e
r m od ul e r ece p tac l es . Set t h e LINE sw i tc h to
ON ; t h e l a mp w it hin t h e sw
i
tc h l e n s s h ould b e illumin ate d .
5 .

Ch an ge t h e P o w er Meter's R AN GE s wi tc h sca l e so i t co
rr
es p
o nd s to t h e r a n ge o f t h e p o w er
se n sor . R efer to t h epa r ag ra ph e n t
i
tl e d R a n ge S wi tc
h
Sca
l
e Se
l ect i o n in Sect i o n II .
6 .

Set t h e P owe r M ete r Co n t r o l s as
f
o ll ows :
RAN
G
E s wi tc h p
os
it i o n
. . . . . .
. . . . . fully εεω
C
AL FA CT
O
R sw i tc h
. . . . . . . .
. . . . . 100% ο
P
O W ER
REF sw i tc h
. . . . . . . . .
. . . . . O FF
7 .

Pr ess t h e ZER O sw i tc h a nd ve rify t h at t h e m ete r p oin te r m o v es to z e r o (0) a nd t h e RF BLANK-
IN GO UTPUT i s s h orte d to g r o un d .
8
.

Set t h e RAN
G
E sw i tc h to t h e p os iti o n indi cate d in t h e f o ll o win g ta bl e . Th e n, co nn ect t h e p owe r
se n sor (a nd adap te r or atte nu ator as r e quire d) to t h e P O W ER REF O UTPUT a nd set t h e r ear
p a n e l P O W ER REF s wi tc h to (ON) . V e rify t h at t h e m ete r r eads a ppr ox im ate ly t h e sa m e as
indi cate d in t h e tab l e .
F ig u re 3-3 . Ope r ator's Ch ec k s (1 of 2)

HP 435B Specifications

General

Brand	HP
Model	435B
Category	Measuring Instruments
Language	English