Ricoh Aficio MP 4000, Руководство по обслуживанию

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Bit Switches
SM 97 D346
Fax Op
tion
T
y
pe 5
000
D34
6
(tx mode: Internal)
Bit 1: 0, Bit 0: 0 = None
Bit 1: 0, Bit 0: 1 = Low
Bit 1: 1, Bit 0: 0 = Medium
Bit 1: 1, Bit 0: 1 = High
frequencies because of the length of wire between
the modem and the telephone exchange.
Use the dedicated transmission parameters for
specific receivers.
Also, try using the cable equalizer if one or more of
the following symptoms occurs.
Communication error
Modem rate fallback occurs frequently.
ƒ
This setting is not effective in V.34
communications.
2-3
PSTN cable equalizer
(rx mode: Internal)
Bit 3: 0, Bit 2: 0 = None
Bit 3: 0, Bit 2: 1 = Low
Bit 3: 1, Bit 2: 0 = Medium
Bit 3: 1, Bit 2: 1 = High
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between
the modem and the telephone exchange.
Also, try using the cable equalizer if one or more of
the following symptoms occurs.
Communication error with error codes such as
0-20, 0-23, etc.
Modem rate fallback occurs frequently.
ƒ
This setting is not effective in V.34
communications.
4
PSTN cable equalizer
(V.8/V.17 rx mode: External)
0: Disabled
1: Enabled
Keep this bit at “1”.
5 Not used Do not change the settings.
6
Parameter selection for dial
tone detection
0: Normal parameter
1: Specific parameter
0: This uses the fixed table in the ROM for dial tone
detection.
1: This uses the specific parameter adjusted with
SRAM (69ECBEH - 69ECDEH). Select this if the
dial tone cannot be detected when the "Normal
parameter: 0" is selected.