Ricoh A230, Service Manual, Page: 780 / 1134

Serv
ic
e
Ta
b
le
s
A6
9
3
BIT SWITCHES
4-55
SM A230/A231/A232
G3 Switch 04
No FUNCTION COMMENTS
0
to
3
Training error detection
threshold 0 - F (Hex); 0 - 15 bits
If the number of error bits in the received TCF is
below this threshold, the machine informs the
sender that training has succeeded.
4
to
7
Not used Do not change the settings.
G3 Switch 05
No FUNCTION COMMENTS
0
to
3
Initial Tx modem rate
Bit 3 2 1 0
Setting (bps)
0 0 0 1 2.4 k
0 0 1 0 4.8 k
0 0 1 1 7.2 k
0 1 0 0 9.6 k
0 1 0 1 12.0 k
0 1 1 0 14.4 k
0 1 1 1 16.8 k
1 0 0 0 19.2 k
1 0 0 1 21.6 k
1 0 1 0 24.0 k
1 0 1 1 26.4 k
1 1 0 0 28.8 k
1 1 0 1 31.2 k
1 1 1 0 33.6 k
Other settings - Not used
These bits set the initial starting modem rate for
transmission.
Use the dedicated transmission parameters if you
need to change this for specific receivers.
If a modem rate slower than 14.4 kbps is
selected, V.8 protocol should be disabled
manually.
Cross reference
V.8 protocol on/off - G3 switch 03, bit2
4
to
5
Initial modem type for 9.6 k or
7.2 kbps.
Bit 5
Bit 4 Setting
0 0 V.29
0 1 V.17
1 0 Not used
1 1 Not used
These bits set the initial modem type for 9.6 and
7.2 kbps, if the initial modem rate is set at these
speeds.
6
to
7
Not used Do not change the settings.