Ricoh A250 Service Manual page 500

BIT SWITCHES
Communication Switch 01
No FUNCTION
2 Wrong connection prevention
to method
3 Bit 3 Bit 2
0 0
0 1
1 0
1 1
4-5 Not used
6 Maximum printable page
7 length available
Bit 7 6 Setting
0 0 No limit
0 1 B4 (364 mm)
1 0 A4 (297 mm)
1 1 A3 (432 mm)
Communication Switch 02
No FUNCTION
0
Burst error threshold
0: Low 1: High
1 Acceptable total error line
ratio
0: 5% 1: 10%
2 Treatment of pages received
with errors during G3
reception
0: Deleted from memory
without printing
1: Printed
A250
(0,1) - The machine will disconnect the line
without sending a fax message, if the last 8 digits
Setting of the received CSI do not match the last 8 digits
None of the dialed telephone number. This does not
8 digit CSI work when manually dialed.
4 digit CSI (1,0) - The same as above, except that only the
CSI/RTI last 4 digits are compared.
(1,1) - The machine will disconnect the line
without sending a fax message, if the other end
does not identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will
always go ahead.
Note: This function does not work when dialing is
done from the external telephone.
Do not change the setting.
The setting determined by these bits is informed
to the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
If there are more consecutive error lines in the
received page than the threshold, the machine
will send a negative response.
The Low and High threshold values depend on
the sub-scan resolution, and are as follows.
Resolution
Low settings
High settings
If the error line ratio for a page exceeds the
acceptable ratio, RTN will be sent to the other
end.
0: Pages received with errors are not printed.
COMMENTS
COMMENTS
100 dpi
3.85 l/mm 7.7 l/mm
6
12
4-38
200 dpi 400 dpi
15.4 l/mm
12 24
24 48
SM