Canon FACSIMILE BASIC 2000 Service Manual page 229

• Image transmission speed change from the receiver
The receiver returns to the PPh signal in response to the Sh signal from the
transmitter. The image transmission speed is then determined by the MPh
sequence sent from both modems.
Fig. 5-63 Image Transmission Speed Change from the Receiver
G3 FACSIMILE COMMUNICATIONS
TX RX
Image
data
Turn-off
Sh
Sh
PPh
ALT
PPh
ALT
ALT
MPh
MPh
MPh MPh
E E
PPS-NULL
flags
flags PPR
flags
"1"
S
S
PP
B1
Image
data
Turn-off
1
2
3
4
5
6
ït
çi
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