Ricoh Type M12, Field Service Manual

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Address Function Unit Remarks
6805BD
Modem turn-on level (incoming signal
detection level) -37-0.5N
(dBm)
6805BE to
6805C6
Not used - Do not change the settings.
6805C7
Bits 0 to 3 – Not used
Bit 4 = V.34 protocol dump 0: Simple, 1: Detailed (default)
Bits 5 to 7 – Not used.
6805C8 to
6805D9
Not used - Do not change the settings.
6805DA T.30 T1 timer 1 s
6805E0 bit
3
Maximum wait time for post message
0: 12 s
1: 30 s
1: Maximum wait time for
post message (EOP/EOM/
MPS) can be changed to
30 s.
Change this bit to “1” if
communication errors occur
frequently during V.17
reception.
6805E3
Bits 0 and 1 – DCV (TIP/RING) Voltage
Bit 1:0, Bit 0: 0 = 3.1 V
Bit 1:0, Bit 0: 1 = 3.2 V
Bit 1:1, Bit 0: 0 = 3.35 V
Bit 1:1, Bit 0: 1 = 3.5 V
Bits 2 and 3 – MINI (minimum loop electric current)
Bit 2:0, Bit 3: 0 = 10 mA
Bit 2:0, Bit 2: 1 = 12 mA
Bit 2:1, Bit 3: 0 = 14 mA
Bit 2:1, Bit 3: 1 = 16 mA
Bits 6 and 7 – ACIM (AC impedance)
Bit 7:0, Bit 6: 0 Bit 5:0, Bit 4: 0= 600
Bit 7:0, Bit 6: 0 Bit 5:1, Bit 4: 0= TBR21
4. Service Tables
172