Agilent Technologies HP 83711A - Page 44

P
erforming
Fundamental
Synthesizer
Operations
If Y
ou Encounter
a Problem
If
no
cursor
(
9
)
appears
over
a
parameter
in
the
display:
Check
that
the
ENTRY
OFF
function
is
not
enabled.
The
ENTRY
OFF
function
is
enabled
when
the
cursor
(
9
)
doesn't
appear
over
any
of
the
parameters
in
the
display
.
T
o
return
to
normal
entry
mode
,
press
the
desired
function
key
which
has
a
numeric
parameter
associated
with
it
(for
example
,
press
4
FREQ
5
if
you
want
to
enter
frequency).
If
the
parameter
you
are
trying
to
enter
is
not
accepted
by
the
synthesizer:
Ensure
that
you
are
not
trying
to
set
the
parameter
greater
than
or
less
than
its
limit.
Refer
to
the
specication
table
in
this
manual
for
the
parameter
limits
.
Check
that
the
MSG
LED
annunciator
is
o.
If
the
synthesizer
MSG
annunciator
is
on,
there
is
a
problem
with
the
synthesizer
.
T
o
determine
the
error
and
turn
o the
MSG annunciator
,
refer
to
\T
o
Read
the
Contents
of
the
Error Queue"
in this
chapter
and
the
listing
of
error
messages
in
Chapter
8.
If
the
synthesizer
does
not
display/output
the
carrier
frequency
entered:
Check
that
the
frequency
multiplier value
entered
is
the
expected
value
.
When
a
multiplier
value
other
than one
is
entered,
the
frequency
resolution
of
the
signal
before
multiplication must
be
obeyed.
F
or
example
,
for
a
desired
frequency
of
40 GHz
using a
multiplier
value
of
three
,
the
synthesizer
would
have
to
output
a frequency
of 13.333333333
GHz.
Since
frequency
resolution at
that
frequency
is
1
kHz,
the
closest
the
synthesizer
can
set the
frequency
is
13.333333000
GHz.
This
yields
39.999999000
GHz
after
multiplication, not
40
GHz.
2-14