Ricoh FAX7000L, Field Service Manual

Page: 145 / 377

G3 CCU Bit Switch 06
BIT FUNCTION
DATA COMMENTS
Maximum number of attempts to resend a
page after sending CTC
0 Bit 1 Bit 0
Setting
After sending a page, the machine waits for the response. If
0 0 4 the other end informs (using the PPR signal) that there were
1 0 1 3
errors, the defective part of the data will be resent. The
1 0 2
machine can then try to correct the data up to 4 times; the
1
1 1
number of times is determined by the setting of these two bits.
If the data is still bad, the machine will send CTC or EOR (see
bit 2 below).
2 CTC transmission 0: Enabled This is normally kept at 0. If the bit is 1, EOR is sent instead or
(tx side) 1: Disabled CTC. CTC means that the tx side will continue to resend the
remaining error data for the page, possibly at a lower data
rate (see bit 3 below), although all retries have been made.
EOR means that the tx side will stop trying to correct the er-
rors for this page and will go on to the next page.
3
Modem rate
0: Enabled
After all attempts to correct errors on a page, the machine can
fallback using CTC 1: Disabled
send CTC or EOR (see bit 2 above). If CTC is used, the tx
side will continue trying. If this bit is 0, the data will be sent at
a lower modem rate. EOR will only be sent if all tries at 2400
bps fail. If this bit is 1, the data will be resent at the original
speed. If the page cannot be sent after all retries, the machine
will not send CTC or retry.
This bit is ignored if bit 2 is 1.
Continued on the next page
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