HP 435B - Est

M ode l 435 Β

Pe rf o rm a n ce T ests
4-8 . CA L I BR ATIO N F ACTO R T E ST
S PE C IFI C ATI O N : 16- pos i t i o n s wi tc h n o rm a liz es m ete r r eadin g to acco un t f o r ca libr at i o n f acto r o r
e ff ect iv e e ffi ci e n c y . R a n ge 85% ο to 100% ο in 1% ο ste p s .
DE SC RIPTI O N :

A fte r t h e Po w e r M ete r i s z e r oed on t h e m ost se n s i t iv e r an ge, α 1 m W inpu t le v e l i s
a ppli e d to t h e P owe r M ete r a nd t h e C AL ADJ co n t r o l i s set to ob ta in α 1 .000 mW
indi cat i o n . Th e n t h e C AL FA C T OR s wi tc h i s ste pp e d t hroug h i ts 16 p os i t i o n s a nd t h e
m ete r i s m o ni to re d to e n sure t h at t h eprop e r indi cat i o n is o b ta in e d f o r eac h pos i t i o n .
R A
N
G
E
CA L I BR ATO R
E Q UIPMENT :

Di g i ta l V o l t m ete r . . . . . . . . . . . . . . HP 3455A
R a n ge Ca libr ato r

. . . . . . . . . . . . . . HP 11683A
PR OC EDURE :

1 . Set t h e 11683 Α RAN G E s wi tc h to 1 mW, t h e FUN C TI ON s wi tc h to C ALIBRATE
a nd t h e P O LARITY s wi tc h to N O RMAL .
CA L F ACTO R
Switc h
P ositio n
100
99
98
97
96
95
94
93
2 .

Set t h e Po w e r M ete r RAN G E sw i tc h 5 ste p s fr o m t h e fully εεω p os i t i o n .
3 .

Set t h e DVM RAN G E s wi tc h to Vd c .
4 .

Co nn ect t h e e quipm e n t as s h o wn in Fi g ur e 4-4 .
5 .

Set t h e fr o n t p a n e l C AL ADJ co n tr o l to pro vid e α r ea din g of 1000 ±2 mVd c on t h e
DVM .
6 .

Set t
h
e C AL FA C TOR s
wi
tc
h
to eac hp os i t
i
o n a nd v e rify t h at t h e indi cat i o n s
Min .
V dc
0 .994
1 .004
1 .014
1 .025
1 .036
1 .047
1 .058
1 .069
o b se rv e d
at
eac hp os i t i o n are wi t hin
t
h
e
limi
ts
s p
ec
i f i
e
d in
t
h
e
f o ll
o
win g
ta bl e .
R es u lts
Actual
We
PERF ORMA NC E T E STS
DIGITA L
V
O L T
M
E T
ER
RECOR D ER O UTPUT
(RE A R P A N EL)
INPU T
F ig u re 4-4 . Calib rat i on F acto r Test Set u p
Μαχ .
V dc
1 .006
1 .016
1 .026
1 .037
1 .048
1 .059
1 .070
1 .081
CA L F ACTO R
Switc h
P osition
92
91
90
89
88
87
86
85
Min .
We
1 .081
1 .093
1 .105
1 .118
1 .130
1 .143
1 .157
1 .170
R es u lts
Act u al
V dc
Μαχ .
V dc
1 .093
1 .105
1 .117
1 .130
1 .142
1 .155
1 .169
1 .182
4- 7