03/02 How to use the Diagnostic C/E Mode
WorkCentre Pro 423/428 2-195 CHAPTER 2 TROUBLESHOOTING
Chain Function Item Content Default Description
Access
by
57 663 Number of FTTs Resulting in Fall Back
at G3M 9600/7200/4800/2400bps
0: Twice FTT fallbacks at all
frequencies
1: Once FTT Fall Back at
4800/2400bps only (twice FTT Fall
Back at others)
2: Once FTT Fall Back at all
frequencies
00 When error is detected by the TCF signal or the EQM data check, the
receiving terminal sends FTT signal. This data specifies how the modem
speed will be reduced based on the FTT signal detected when the signal is
sent by Main unit.
CE
57 670 No. of consecutive lines for sending
RTN signal
0 to 255line(1step=1line) 05 When error is identified in the image data received, this data specifies the
number of consecutive error lines to determine which signal should be send
back, the MCF signal or RTN signal. Some transmitters may falls back
whenever they receive the RTN signal or send back the same image data. In
such a case, set up a greater number for consecutive error lines.
CE
57 671 Area rate allowed for sending RTN
signal
0 to 100%(1step=1%) 05 When error is identified in the image data received, this data specifies the rate
of error area to determine which signal should be send back, the MCF signal
or RTN signal. Some transmitters may falls back whenever they receive the
RTN signal or send back the same image data. In such a case, set up a
greater number for the area rate.
CE
57 672 Area rate allowed for sending RTP
signal
0 to 10%(1step=0.1%) 05 When error is identified in the image data received, and the level generated is
between the MCF signal and RTN signal, the RTP signal will be sent back for
conducting the training again. This data set as the standard by specifying the
error area rate. Some transmitters may falls back whenever they receive the
RTN signal or send back the same image data. In such a case, set up a
greater number for the area rate.
CE
57 673 Page processing for RTN signal
detected at send side.
If the transmitter receives RTN,
continuation is determined from this
data.
1: Suspend transmission (This
sentence is resent.)
00 Determines how to handle thr transmission page that detected the RTN signal
sent from the receiving terminal. Some of the receiving terminals may appear
to send back the RTN signal with the severe error rate, but the machine
recognizes the error status which can be overlooked by human eyes. It is
necessary, therefore, to understand the RTN process status of the remote
terminal when you change the setup.
CE
57 676 Storing error codes for EOR/RTN
signals
0 :Do not store 1 :Store RTN 2:
Store EOR 3: Store EOR and RTN
02 Determines whether or not to store error when the EOR/RTN signals are sent
or received.
CE
57 680 FSK Detection before Image Information
Reception
0:No 1:Yes 01
57 690 ECM capability (Auto Error Resend
Function)
0:Off 1:On 01 This data determines the Error Correction Mode capability as recommended
by ITU-T. The ECM capability bit data of the NSF/NSC/NSS/DIS/DTC/ DCS
signal, based on the setup data, changes and informs the remote terminal of it
using the signal.
Individually reflectable on each speed dial (refer to page 2-207)
CE
57 691 ECM Frame Size 0:256bytes 1:64kbytes 00 This data specifies the frame size of the send side when ECM communication
is made. The ITU-T recommendation specifies to use 64 and 256 but the data
has never been changed.
CE
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