MODULATION MODES Four modulation modes are
available:
Single FM, Wideband FM, OM, AM
or pulse (optional).
Dual
Two
independent
channels of differing
modulation type (e.g. AM
with FM).
Composite
Two independent channels of the same
modulation type. (e.g.
FM1 with FM2).
Dual composite A
combination of Dual and Composite
modes providing four
independent
channels
(e.g.
AMI with AM2 and FM1
with FM2).
Phase modulation can be used
instead of FM (but not
simultaneously).
FREQUENCY
MODULATION
Deviation
Peak deviation
from
0 to 1 MHz
for carrier frequencies up
to 21 .09375
MHz;
Peak
deviation
from 0 to
1% of carrier frequency
above
21.09375
MHz.
Deviation for
2040
series
in low noise mode is limited to:
Carrier
frequency range
Deviation limit
2.7 GHz
~
5.4 GHz
200.0 kHz
1.35 GHz
-2.7
GHz
100.0
kHz
675 MHz
-1.35
MHz
50.0 kHz
337.5 MHz
-
675 MHz
25.0 kHz
168.75 MHz -337.5 MHz
12.5 kHz
84.375
MHz
-
168.75 MHz
6.25 kHz
42.1875 MHz
-
84.375 MHz 3.125 kHz
21 .09375 MHz
-
42.1875
MHz 1 .0625 kHz
below 21.09375 MHz
6.25 kHz
Selection By keyboard
entry of data. Variation by 1F/4J- keys
and
by
rotary
control.
Indication
Displayed resolution
Accuracy
at
1 kHz
internal modulation
3 digits with annunciators.
1 Hz or 1 least significant
digit, whichever is greater.
In low noise modes: ±6%
of indication ±1 Hz excluding residual
FM.
In normal noise modes: ±5%
of indication ±10 Hz excluding
residual FM.
46882-074C
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