Figure
3-24.
T
est
Set
Maximum
Signal
Lev
els
Connecting
External
Signal
Conditioning
The
test
set
rear
panel
links
lab
eled
POR
T
1
and
POR
T
2
can
b e
used
to
install
external
equipmen
t
in
the
P
ort
1
and
P
ort
2
signal
paths.
The
connectors
lab
eled
LO
W
PO
WER
OUT
eac
h
connect
to
an
output
of
the
forward/rev
erse
switch.
The
connectors
lab
eled
HIGH
PO
WER
IN
connect
to
the
fron
t
panel
measuremen
t
POR
T
1
or
POR
T
2.
Note
the
damage
lev
els
indicated
in
Figure
3-24.
The
maximum
p o
w
er
rating
of
the
forward/rev
erse
switch
is
+20
dBm
applied
at
the
RF
input,
or
applied
to
the
forward/rev
erse
p oles
via
either
LO
W
PO
WER
OUT
connector.
The
maxim
um
signal
lev
el
applied
at
either
HIGH
PO
WER
IN
connector,
or
to
either
of
the
fron
t
panel
POR
T
1
and
POR
T
2
connectors
is
+43
dBm.
Example
High
P
o
w
er
Measurements
T
o
set
signal
lev
els
in
the
test
set,
estimate
the
input
and
output
p o
w
er
lev
els
of
the
device
under
test.
When
the
test
set
is
congured
to
handle
these
lev
els,
the
op erating
device
is
connected
and
the
p o
w
er
estimates
are
v
eried
b
y
measuring
the
user
parameters.
If
the
estimates
w
ere
inaccurate,
the
test
set
conguration
is
c
hanged
so
that
p o
w
er
lev
els
at
all
p oints
in
the
system
are
within
limits.
When
this
is
accomplished,
the
device
is
remov
ed,
measuremen
t
calibration
is
p erformed,
then
the
device
is
installed
and
its
S-parameters
are
measured.
F
ollo
wing
are
t
w
o
examples
of
measuremen
ts
on
high
p o
w
er
devices.
Use
them
as
a
guide
for
considerations
that
are
sp ecial
to
y
our
test
setup.
3-30
Operation
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