Agilent Technologies HP 83711A - Page 134

Ke
ys/Shifted
Functions
EXT METER
Applications
External leveling
can be
used when
your
application
requires
long
cables
that will
cause frequency-dependent
losses.
It also
enables
devices
,
such
as
ampliers,
mixers,
etc. to
be inserted
into
the
RF
signal
path
so
that
the
output of
the inserted
device
is
controlled
by
the
synthesizer
.
External
Equipment
Limitations
P
ower Meter
The power
meter
must
be
capable
of
producing
a
0
V
to
1
V
output
voltage
linearly
proportional
to
power
over
each
decade
of
range
.
The
recorder
output
of
most
power
meters
provides
this
voltage
.
P
ower
Sensor
The
power
sensor
must have
a
frequency
range
that
is
appropriate
for
the
range
of
frequencies
being
leveled.
The
sensor
must also
have
enough
dynamic
range
to
measure
the
level
at
the output
of
the
directional
coupler
or
power
splitter.
As
an
example
,
to
level
signals
in
the
0
7
dBm
to
0
dBm
range
using
a10
dB
coupler
,
the
power
sensor
must
be
capable
of
measuring
power
in
the 0
17
to
0
10
dBm
range
.
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