The present invention relates to a receiving system (R) including an
adaptive first equalizer (E1) associated with a first threshold detector
(S1), and a device (TR) which enables the timing (TR) of a transmitting
system to be recovered for said receiving system (R) from an equalized
signal (y.sub.n) and a signal obtained by thresholding (s.sub.n).
The receiving system (R) also includes a fixed second equalizer (E2)
associated with a second threshold detector (S2).
The receiving system finally includes a device (SW) by means of which it is
possible to switch between a first mode of operation (position 1) in which
the equalized signal (y.sub.n) and the signal (s.sub.n) obtained by
thresholding are supplied by the second equalizer (E2) and the second
threshold detector (S2), respectively, and a second mode of operation
(position 2) in which the said signals (y.sub.n and s.sub.n) are supplied
by the first equalizer (E1) and the first threshold detector (S1),
respectively.
Such a receiving system (R) provides independent operation of the adaptive
equalizer (E1) and of the timing recovery device (TR), which speeds up the
convergence of the clock of the receiving system with respect to that of
transmitting system.
