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EXTERNAL MODULATION
Amplitude Modulation Suppressed Carrier
Note that the Reduce Input light will be ON during Suppressed Carrier operations
and should be ignored. The carrier is suppressed whenever the modulating signal is
offset by approximately -1 VDC
ponent of the modulating signal controls the amplitude of the carrier from inverted
carrier (-2V offset) to suppressed carrier (-1 V offset) to normal carrier
set). The Reduce Input light and "E50" are inhibited while in either of the
modes when the phase locked loop is unlocked.
Frequency Modulation
The 3314A's output signal can be Frequency Modulated to deviations of
the frequency range. The sense of the FM input is not affected by Function Invert.
The deviation is constant for all carrier frequencies in the same frequency range as
long as the modulating signal is constant.
FM
approximate):
Input Impedance
.
Input Sensitivity
Modulation . . . . . . . . . . . . . . .
3dB Bandwidth . . . . . . . . .
1V if function invert is asserted). The DC
(+
AM
6.
. . . . . .
58
(cont)
1OkO
=
±
1 % of freq range
2Vp-p
=
(+ 1Vpeak
+ 1
%)
(-1Vpeak = -1
%)
0 to ± 1 % deviation
100Hz to 100kHz
(AC coupled)
corn-
OV off-
(+
Lock
±
1
of
I
I
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