Agilent Technologies HP 83711A - To Use the Level Correct Routine

T
o
Use
the
Level
Correct Routine
When
activated, the
level correct
function
adjusts
the
synthesizer
output
power
(to compensate
for losses
or
gains)
to
provide
constant,
leveled
power
at
output of
the external
signal path.
When
the level
correct routine
is used,
the
synthesizer
performs
a
calibration
process
that corrects
for external
losses or
power
variations
in
an
external
signal
path. When
the
level
correct
routine
is
run,
a
power
meter
that
is
under control
of
the
synthesizer
will
measure
power
variations
at
the
output
of
the
external
signal
path
over
a
user-dened
frequency
range
.
The
synthesizer
then
reads
back
the
power
level
data
from
the
power
meter
and
creates
a
table
of
correction
values
for
each
frequency
point (the
level
correction
table).
The
level
correction
table
resides in
non-volatile memory
and
up
to
four
level
correction
tables
can
be stored
for later
use
.
If
the
power
meter
is
in
a
favorable
range
,
the
level correct
routine takes
approximately
two
minutes
to
run.
N
O
T
E
When
using
the
level
correct
routine
,
the
external
path
to
the
synthesizer
must
be
linear
(must
have
a
1
dB
per
1
dB
transfer
function).
Using
the
level
correct
routine requires
the following
external equipment.
Equipment Requirements
HP 437B
, 438A, 70100A, or
SCPI compatible power meter
No substitute
.
Power Sensor Must be compatible with the power meter used. Must be
capable of measuring power at the frequencies and levels
present at the output of the signal path being leveled.
3-14