Phase Modulation - MOGlabs ARF021 Manual

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5.4.3 Phase modulation

The two channels of the
modulation experiments whereby
Using phase modulation mode with a 1 Vpp modulation input with
gain 0x7fff gives ±π phase modulation (Figure 5.4).
Figure 5.4: A 1 Vpp, 10 kHz triangle wave (blue) is used for phase mod-
ulation of CH1 and demodulated with an unmodulated
frequency (magenta).
Note that it may be necessary to adjust the phase of one of the
channels using the
dependent) differential phase delay in the signal paths and give
a demodulated signal centred at zero. Similarly the
should be enabled to ensure the two channels are phase-locked to
each other.
Chapter 5. External modulation
ARF/XRF can be used to perform phase
CH2
PHAS
command to compensate for the (frequency-
is used to demodulate
CH2 at the same
SYNC
CH1 .
feature