Toshiba GD-1210 Service Manual page 59

- Equalizer and echo canceller training (Phase 3)
Training (adjustment) is performed according to the parameters set in the phase 2 to optimize the
filters such as an equalizer.
Transmitter
Signal name
S signal
signal
S
PP signal
TRN signal
- Final training (Phase 4)
The settings such as the maximum value for the data rate, selection of the trellis encoder, and
data rate which can be supported are made in this phase.
Transmitter/receiver
Signal name
PPh signal
ALT signal
Modulation parameter
E sequence
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Abbreviation
S Short training
S
PP Used by the modem of the
receiver to train the equalizer.
TRN Used by the receiver to deter-
mine the transmission rate.
Abbreviation
PPh Used by the modem of the
other side to train the equal-
izer.
ALT
MPh Informs the parameters used
for the image transmission
such as maximum data signal
rate and type of the trellis cod-
ing/pre-coding.
E
3 - 17
Function
is a signal made as the
S
result of phase transition of S.
Function
-
- 20 bit sequence of "1"s in
binary
GD-1210/1250/1270/1160/1260
DIALING/COMMUNICATION CONTROL
Remarks
Remarks
3