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Canon FAX-L1000 User Manual

Page 233

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FAX-L1000 Chapter 3: Technical Reference

c-4) 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.

Figure 3-39 Image Transmission Speed Change from the

Receiver

S

PP

B1

Image
data

"1"

ALT

PPh

E

flags

PPR

flags

Sh

PPS-NULL

flags

Image
data

ALT

ALT

MPh

MPh

E

MPh

MPh

TX

RX

PPh

Turn-off

Turn-off

Sh

S