HP 435B Service Manual

M od e l 435 Β

Ad j u st m e n ts
AD JUST MEN TS
5-8 . P O WER ME T ER AD JUST MEN TS W IT H 50 Ω P OWER S EN SO R (Cont'd)
5 .

Set t h e LINE sw i tc h to (ON) .
B
efo r e p r oceedin g w i t h t h e ad j u st m e n t, co nn ect t h e in p u t of α
f r
e qu e n c y co un te r (s u c h as t h e ΗΡ 5314 Α ) to ΤΡ 7οr ΤΡ 8 a nd ve ri f y
t h at t h e mul t ivi b r ato r f r e qu e n c y i s 220 ±12 Hz . I f t h ef r e qu e n c y i s
in co rr ect, pe r fo rm t h e Mul tivi b r ato r A d ju st m e n t (5-7) .
6 .

Cen te r t h e P o w e r M ete r B a l a n ce Co n tr o l A 4 R 46 .
7 .

Set t h e P o w e r M ete r RAN G E s wi tc h fully c w a nd a d j u st A 4 R 32, D C O ff set co n tr o l ,
f
o r α DVM r ea din g o f 0 ±0 .2 mVd c .
8 .

Set t
h
e RAN GE s wi tc h to t h e p os i t i o n indi cate d in t h e ta bl e b e l o w ; set t h e r ea r
p a n e l P O W ER REF sw i tc h to (ON) .
Power Se nso r
8481 Β and 8482 Β ( r e m o v e atte nu ato r )
8481 Α , 8482 Α , 8481 Η , 8482 Η

1 mw
8485 Α (HP 1250-1250 Ad ap te r r e quir ed)

1 mw
8484 Α
(HP 11708 ΑR e f ere n ce Atte nu ato r r e quir e d)

1 μ W
9 .

Ad j
u st t h e fro n t p a n e l C AL ADJ co n tr o l to r ead 1 .000 ±0 .001 Vd c on t h e DVM .
10 . Ad j u st A 4 R 35, M ete r co n t r o l , to g iv e α full -sca l e m ete r r ea din g .
11 . Set t h e r ea r p an e l PO WER REF s wi tc h to O FF ; set t h e RAN G E s wi tc h to t h e
pos i t i o n indi cate d in t h e ta bl e b e l o w .
8481 Α ,
8482
Α ,
8481 Η , 8482 Η
8485
Α
(HP 1250-1250 Ad ap te r re quir e d)
8484
Α
(HP 11708 ΑR e fe re n ce A tte nu ato r re quir e d)
R A N G E Switc h P osito n
3 W
3 m W
3 m W
3
μ
W
P owe r Se nso r
8481 Β
a
nd
8482
Β ( r
e
m
ov e atte nu ato r )
ΝΟΤΕ
R A N G E Switc h P osit i on
1 ω

HP 435B Specifications

General

Brand	HP
Model	435B
Category	Measuring Instruments
Language	English