External Frequency Reference
The generators use a high quality
TCXO crystal as the internal frequency reference.
If a higher accuracy or stability is
required, an external 10MHz reference signal can be
applied to the Ref. Clock input.
Phase Locking Two Generators (or more)
Two generators can be synchronised together to provide
outputs at the same frequency (or at harmonics) and with
a phase difference.
The amplitude and phase of these
outputs can also be modulated providing the capability
to perform QAM and QPSK respectively.
Any waveform other than pulse can be
used, and the phase difference is adjustable between
-360.0 and +360.0 to a resolution of 0.1 degrees. Skew
is better than 5ns.
synchronising two 2-channel generators it is ;possible
to have four closely synchronised and phase adjustable
It is also
possible to synchronise more than two generators but
results are not guaranteed.
These features are
included as standard on both the TG501xA and TG251xA,
unlike some competitor products for which they are an