HP 435B - Page 21

O p er at i o n

M o d e l 435 Β
3-4
8
FR O NT P A
NEL FE ATUR ES
® M eter . N o
rm
a
lly indi cates a ver age RF p owe r in

©
PO WER REF O UT PU T . RF o u t pu t o
f
1 .00
m W ±0 .70% ο
dBm or W atts
. Durin g b atte ry ope r at i o n t h e m ete
r

in to 5052 at 50 MHz fr o m an
in te rn a l refe r e n ce
co n t inu ou s
ly indi cates b atte ry co ndi t i o n . Α no r -

osc ill ato r . Av a il a bl e f or s y ste
m ca libr at i o n .
m a l r ea din
g indi cates t h e b atte ry i sc h a r ge d ; α full
do wn -sca
l
e
r ea din g indicates t h e battery i s di s-

Ο
CA L AD J . Screwdriver ad j u st
m e n
t
f o r ca libr at in g
c h a r ge
d
o
r i s d e f ect iv e .

a ny po w erse n so r a nd P o w
er M ete ras α s y ste m , to
α kn o wn sta nd ard .
© M ete
r
Zero .
M ec h a ni ca l a d j u st m e n t u se d to z er o t h e
m ete r wh e n t h e LINE s wi tc h i s O FF .
® I n put connector . Inpu t
fr o m t h e p o w e r se n sor vi a
©
L
I NE Switch . Conn ects lin e or b atte ry po w er to
t h e

t h e po w e r se n so
r
ca bl
e .
P owe r M ete r c ir c ui ts w h e n t h e LINE sw i tc
h i
s ON .
Durin g b atte ry o p e r at i o n, t h e l a mp co
n ta in e d

Ο
CAL F ACTO R Switc h . C
h an
ges
t h e ga in o f t h e P o w e r
wi t hin t h e LINE sw i tc h w ill n ot b e illumin
ate d

M ete r a mplifi e r
c ir c ui
ts to
co mp e n sate f o r mi s-
w
h
e
n t h e IN S TRUMENT i s ON .

m atc h l osses a nd
e ff ect iv
e
e ffi c i e n c y o f t h e p owe r
se n so r .
Ο
R
A N
G
E Switc h . Se l ects d es ir e dp o w e r r an ge ;
k e y e d
to m ete r full -sca l e d eflect i o n ; has t hree
r
e
m ova bl e

Ο Z ER O Switch . Th e ZER O
swi tc h act iv ates α f ee d -
sca l es whi c h ar e c han ge d to m atc
h
t
h e r an ge of

b ac k c ir c ui t, w
hi
c
h a u to m at i ca lly zeros t h e m ete r
t h e p o w er se n sor .

p o in te r, a nd α
r
ea
r p a n e l RF b l a nkin g s i g na l .
F ig u re 3-1 . Fr o n t Pa n el Cont r ols, Con n ecto r s and
I nd icato r s