Ricoh B051 Service Manual page 474

BIT SWITCHES
G3 Switch 08 - Not used (do not change the settings)
G3 Switch 09
No FUNCTION
0 ISDN cable equalizer
to (tx mode: Internal)
1 Bit 1 Bit 0
0 0
0 1
1 0
1 1
2 ISDN cable equalizer
to (rx mode: Internal)
3 Bit 3 Bit 2
0 0
0 1
1 0
1 1
4
ISDN cable equalizer
(V.8/V.17 rx mode: External)
0: Disabled
1: Enabled
5 ISDN cable equalizer
(V.34 rx mode: External)
0: Disabled
1: Enabled
6-7 Not used
G3 Switch 0A
No FUNCTION
0 Maximum allowable carrier
1 drop during image data
reception
Bit 1 Bit 0
0 0
0 1
1 0
1 1
B502
CÓPIA NÃO CONTROLADA
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between
Setting the modem and the telephone exchange.
None
Use the dedicated transmission parameters for
Low
specific receivers.
Medium
High
Also, try using the cable equalizer if one or more of
the following symptoms occurs.
•
•
Note: This setting is not effective in V.34
communications.
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between
Setting the modem and the telephone exchange.
None
Low
Also, try using the cable equalizer if one or more of
Medium
the following symptoms occurs.
High
• Communication error with error codes such as
• Modem rate fallback occurs frequently.
Note: This setting is not effective in V.34
communications.
Keep this bit at "0" in most cases.
Keep this bit at "0" in most cases.
Do not change the settings.
These bits set the acceptable modem carrier drop
time.
Try using a longer setting if error code 0-22 is
Value (ms) frequent.
200
400
800
Not used
CÓPIA NÃO CONTROLADA
COMMENTS
Communication error
Modem rate fallback occurs frequently.
0-20, 0-23, etc.
COMMENTS
84
SP No. 1-105-010
SP No. 1-105-011
SM