Bit Switches; System Switches - Ricoh B291 Service Manual

BIT SWITCHES

3.2 BIT SWITCHES

WARNING
Do not adjust a bit switch or use a setting that is described as "Not used",
as this may cause the machine to malfunction or to operate in a manner
that is not accepted by local regulations. Such bits are for use only in other
areas, such as Japan.
NOTE: Default settings for bit switches are not listed in this manual. Refer to the
System Parameter List printed by the machine.

3.2.1 SYSTEM SWITCHES

System Switch 00
No FUNCTION
0 Dedicated transmission
parameter programming
0: Disabled 1: Enabled
1 Not used
2 Technical data printout on the
Journal
0: Disabled
1: Enabled
e.g. 0000 32V34
(1) (2)(3)
(1): EQM value (Line quality data). A larger number means more errors.
(2): Symbol rate (V.34 only)
(3): Final modem type used
(4): Starting data rate (for example, 288 means 28.8 kbps)
(5): Final data rate
(6): Rx revel (refer to the note after this table for how to read the rx level)
(7): Total number of error lines that occurred during non-ECM reception.
(8): Total number of burst error lines that occurred during non-ECM reception.
Note:
EQM and rx level are fixed at "FFFF" in tx mode.
The seventh and eighth numbers are fixed at "00" for transmission records and
ECM reception records.
2
Rx level calculation
Example: 0000 32 V34 288/264 L 01 00 03 04
The four-digit hexadecimal value (N) after "L" indicates the rx level.
The high byte is given first, followed by the low byte. Divide the decimal value of N by -
16 to get the rx level.
In the above example, the decimal value of N (= 0100 [H]) is 256.
So, the actual rx level is 256/-16 = -16 dB
3 Not used
B779
CÓPIA NÃO CONTROLADA
Set this bit to 1 before changing any dedicated
transmission parameters.
Reset this bit to 0 after programming dedicated
transmission parameters.
Do not change
1: Instead of the personal name, the following data
are listed on the Journal for each G3
communication.
288/264 L0100 03 04
(4) (5) (6) (7) (8)
Do not change this setting.
38
CÓPIA NÃO CONTROLADA
SP No. 1-101-001
COMMENTS
SM