Agilent Technologies HP 83711A - Annunciators Turned On

If
Y
ou
Encounter
a
Problem
If
you have
a problem
generating
signals
with
the
synthesizer
,
check
the
following
list of
commonly encountered
problems
and
troubleshooting
procedures
.
If
the problem
involves data
entry,
check
the
section
in
Chapter
2
entitled,
\If
Y
ou Encounter
a Problem."
If the
problem
that
you
encounter
is
not
in
the
following
list or
in
Chapter
2,
contact
the
nearest
Hewlett-P
ackard
oce
for
assistance
.
Annunciators
Turned
On
If
the
UNL
VL
LED
annunciator
is
on:
Check
the
leveled
power
specication
to
make
sure
that
you have
not
exceeded
the
specication.
The
maximum
power
specication
is
frequency
dependent.
Typically
less
maximum
power
is available
as
the
synthesizer
output
frequency
is
increased.
If
external
diode
detector leveling
or external
power
meter
leveling
is
being
used,
ensure that
the leveling
loop is
not opened.
If
external
diode
detector
leveling
or
external
power
meter
leveling
is
being
used,
ensure
that
the
synthesizer
output
is
not
being
forced
into
an
unleveled
condition by
the
leveling
circuitry
.
If
the circuit
path before
the sampling
point
has
a
lot
of
attenuation,
the
synthesizer
will
have
to
source
high
power
even
though
the
required
power at the sampling point seems
low.F
or example
, if the circuit before
the sampling point has 23 dB of
attenuation and the power required at
the sampling point is 5 dBm, the synthesizer
will need to source 28 dBm,
which is more that its maximum specied power level.
3-22