4
Operational
V
erification
INTRODUCTION
This
c
hapter
pro
vides
the
87512A/B
test
pro cedure
to
measure
the
insertion
loss
test
b et
w
een
the
RF
INPUT
and
test
p ort
of
the
test
set.
Tw
o
test
pro cedures
are
pro
vided
for
testing
the
test
set's
insertion
loss.
One
is
used
when
the
8751A
is
a
v
ailable
as
test
equipmen
t,
and
the
other
is
used
when
the
8751A
is
NOT
a
v
ailable
as
test
equipmen
t.
This
v
erication
pro cedure
is
t
ypically
used
for
incoming
insp ection
of
the
87512A/B,
and
to
v
erify
that
the
test
set
is
in
go
o d
order
after
it
has
b een
repaired.
VERIFICA
TION
CYCLE
The
87512A/B
requires
p erio
dic
p erformance
v
erication.
The
frequency
of
p erformance
v
erication
dep ends
on
the
op erating
and
en
vironmen
tal
conditions
under
whic
h
the
87512A/B
is
used.
V
erify
the
87512A/B's
p erformance
at
least
once
a
y
ear,
using
the
op erational
v
erication
describ ed
in
this
c
hapter.
EQUIPMENT
REQUIRED
T
able
4-1
lists
the
equipmen
t
required
to
p erform
the
op erational
v
erication
c
hec
k.
Equipmen
t
that
meets
or
exceeds
the
critical
sp ecications
listed
in
the
table
may
b e
used
as
a
substitute
for
the
recommended
mo
dels.
Operational
V
erification
4-1
Содержание 87512A
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Страница 32: ...Figure 5 1 87512A B Signal Divider Exploded View 5 2 Service ...
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