IVIE IE-10A, Owner'S And Operator'S Manual

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2. Set the DISPLAY s w i t c h t o 1 dB per step f o r best r e s o l u t i o n
and accuracy. Connect t h e t o T.P.
1
and a d j u s t s i g n a l
generator o u t p u t t o
be
w i t h i n t h e manufacturer's device s p e c i f i c a t i o n s
f o r i n p u t l e v e l . Also, i f possible, a d j u s t t h e generator l e v e l t o
be a t the dB i n e on t h e d i s p l a y g r a t i c u l e as shown i n
Fig.
I t
i s n ' t necessary f o r t h e signal l e v e l t o be a t
dB on the analyzer d i s p l a y , b u t i t does serve as a convenient
c a l i b r a t i o n i n e f o r most i n s e r t i o n loss measurements.
I I I
R e f e r e n c e
C a l i b r a t e
L i n e
-
F i g u r e
36
3 .
Next move t h e a n a l y z e r t e s t probe t o T.P.2 and note the decrease i n
t h e displayed s i g n a l l e v e l due t o the i n s e r t i o n l o s s i n t h e t e s t
device (see Fig.
37).
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