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
V
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
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