Ricoh FAX2900L Service Manual page 120

BIT SWITCHES
G3 Switch 08 - Not used (do not change any of these settings)
G3 Switch 09
No FUNCTION
0 ISDN cable equalizer
1 (tx mode)
Bit 1 Bit 0 Setting
0 0
0 1
1 0
1 1
2 ISDN cable equalizer
3 (rx mode)
Bit 3 Bit 2 Setting
0 0
0 1
1 0
1 1
4
ISDN external equalizer for
V.27ter, V.29, V.33/V.17, V.8
(Rx mode)
0: Disabled 1: Enabled
5 ISDN external equalizer for
V.34
(Rx mode)
0: Disabled 1: Enabled
6-7
Not used
G3 Switch 0A
FUNCTION
0 Maximum allowable carrier
drop during image data
1
reception
Bit 1 Bit 0
0 0
0 1
1 0
1 1
2-3 Not used
Use a higher setting if there is signal loss at
higher frequencies because of the length of wire
between the modem and the telephone
None exchange.
Low Use the dedicated transmission parameters for
Medium specific receivers.
High
Also, try using the cable equalizer if one or more
of the following symptoms occurs.
•
•
Use a higher setting if there is signal loss at
higher frequencies because of the length of wire
between the modem and the telephone
None exchange.
Low
Medium Also, try using the cable equalizer if one or more
High of the following symptoms occurs.
•
•
1: Keep this bit at "1" in most cases.
1: Keep this bit at "1" 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
Do not change these settings.
COMMENTS
Communication error
Modem rate fallback occurs frequently.
Communication error with error codes such
as
0-20, 0-23, etc.
Modem rate fallback occurs frequently.
COMMENTS
4-40
21 May, 1999