Parameters - Ricoh A230 Service Manual

DEDICATED TRANSMISSION PARAMETERS

4.4.2 PARAMETERS

The initial settings of the following parameters are all FF(H) - all the parameters are
disabled.
Switch 01
FUNCTION AND COMMENTS
CCITT T1 time (for PSTN G3 mode)
If the connection time to a particular terminal is longer than the NCU parameter setting ,
adjust this byte. The T1 time is the value stored in this byte (in hex code), multiplied by 1
second.
Range:
1 to 127 s (01h to 7Fh)
00h or FFh - The local NCU parameter factory setting is used.
Do not program a value between 80h and FEh.
Switch 02
No FUNCTION
0 Tx level
to Bit 4 3 2 1 0 Setting
4 0 0 0 0 0
0 0 0 0 1
0 0 0 1 0
0 0 0 1 1
0 0 1 0 0
:
:
0 1 1 1 1
1 1 1 1 1 Disabled
5 Cable equalizer
to Bit 7 6 5
7 0 0 0
0 0 1
0 1 0
0 1 1
1 1 1
A230/A231/A232
If communication with a particular remote terminal
often contains errors, the signal level may be
0 inappropriate. Adjust the Tx level for
-1 communications with that terminal until the results
-2 are better.
-3
-4 When disabled, the NCU parameter 01 setting is
used.
Note: Do not use settings other than listed on the
-15
Use a higher setting if there is signal loss at
Setting higher frequencies because of the length of wire
None between the modem and the telephone exchange
Low when calling the number stored in this
Medium Quick/Speed Dial.
High
Disabled
Also, try using the cable equalizer if one or more
of the following symptoms occurs.
•
•
Note: Do not use settings other than listed on the
COMMENTS
left.
Communication error with error codes such as
0-20, 0-23, etc.
Modem rate fallback occurs frequently.
left.
4-74
SM