Ricoh 5510L - Ncu Parameters

14 June, 2002 NCU PARAMETERS
5-77
Service
Tables
5.3 NCU PARAMETERS
The following tables give the RAM addresses and the parameter calculation units
that the machine uses for ringing signal detection and automatic dialing. The
factory settings for each country are also given. The RAM read/write (Function 06)
must change most of these, but NCU Parameter programming (Function 08) can
change some others; if Function 08 can be used, the Remarks column indicates it.
The RAM is in hex code unless (BCD) is included in the Unit column.
NOTE: The following addresses describe settings for the standard NCU.
Change the start address 401F00H to 402000H for the settings for PSTN-2
(optional G3 unit) and 401F00H to 402100H for the settings for IP-FAX
(optional NIC unit).
Address Function Unit Remarks
401F00 Country code for NCU parameters Use the Hex value to program the
country code directly into this address,
or use the decimal value to program it
using Function 08 (parameter C.C.).
Country Decimal Hex
USA 17 11
401F01 Line current detection time 20 ms Line current is not detected
401F02 Line current wait time if 401F01 contains FF.
401F03 Line current drop detect time
401F04 PSTN dial tone frequency upper limit
(high byte)
401F05 PSTN dial tone frequency upper limit
(low byte)
Hz
(BCD)
If both addresses contain
FF(H), tone detection is
disabled.
401F06 PSTN dial tone frequency lower limit
(high byte)
401F07 PSTN dial tone frequency lower limit
(low byte)
Hz
(BCD)
If both addresses contain
FF(H), tone detection is
disabled.
401F08 PSTN dial tone detection time
401F09 PSTN dial tone reset time (low)
401F0A PSTN dial tone reset time (high)
401F0B PSTN dial tone continuous tone time
401F0C PSTN dial tone permissible drop time
If 401F08 contains FF(H),
the machine pauses for the
pause time (address
401F0D / 401F0E).
401F0D PSTN wait interval (low)
401F0E PSTN wait interval (high)
20 ms
401F0F PSTN ring-back tone detection time 20 ms Detection is disabled if this
contains FF(H).
401F10 PSTN ring-back tone off detection
time
20 ms
401F11 PSTN detection time for the silent
period after ring-back tone detected
(low)
20 ms