Advertisement
NSTALLATION
AND
OPERATION
Notes;
1.
This operation does not
change
the
Generator output
unless the
corresponding
modulation
is
enabled.
2.
Uncalibrated
if
peak
amplitude exceeds +16
dBm
when
frequency
<1050
MHz,
or
+13
dBm
when
frequency
^1050
MHz.
3.
Floating-point
number
is
indicated
with
the
word
float.
4.
Uncalibrated
if
FM
is
enabled
and
FM
deviation
is
above
(frequency -150 kHz).
5.
The
maximum
FM
deviation
is
dependent
on
the
output
frequency. Deviations
up
to
400
kHz
or 40.0 radians
may
be
entered regardless of the
output frequency; however,
the
UNCAL
indicator
is
flashed
if
the
limits specified in
Table
4D-14
are
exceeded.
The
maximum
deviations
are
reduced
to
40.0
kHz
and
4.00 rad
if
the
low-rate
FM
option
is
installed.
6.
Toggles
between
400
or 1000
Hz
only.
An
indicator
shows
selected rate
only
if
internal
modulation
is
on.
7.
"0"
selects
a
modulation
rate
of
400 Hz; "1"
selects
1000 Hz.
8.
These
are
ON/
OFF
operations;
any combination
is
allowed.
9.
Two
indicators
EXT
HI
and
EXT LO
are
lit
when
external
AM
or
FM
is
on
to
indicate that the
external
modulation
signal
is
2
%
above
or
2%
below
the
nominal
1
peak
input requirement.
10.
Internal pulse
modulation
can be enabled
by
special -function
or by
the alternate
IEEE-488
command
"PI".
It
can
be enabled with
any combination
of
the
above
modulations.
11.
The
dc coupled
AM
mode
can
be enabled
by
special
function or
by
the alternate
IEEE-488
command
"DA". The
dc
coupled
AM
mode
works
in
conjunction with
External
AM
and
only
affects
the
output of
the
Generator
if
External
AM
is
also
enabled.
12.
"0" turns the
modulation
source
off;
"I" turns
it
on.
Related Operations:
Bright-Digit Edit
Entry Step Entry
2-30.
Relative
Function
The
following
paragraphs
describe
how
to
change frequency and amplitude
using the
relative
mode.
There
are
two
steps;
1
Setting the reference
2
Changing
the
parameter
relative to
that
reference
2-24
Advertisement
