Ricoh Aficio 270 - Page 670

NCU PARAMETERS
SM 4-71 A265/A267
Service
Tables
A895
Address Function Unit Remarks
680433
Busy tone signal state time tolerance for all ranges, and number of cycles
required for detection (a setting of 4 cycles means that ON-OFF-ON or OFF-
ON-OFF must be detected twice).
Tolerance (±)
Bit 1 0
0 0 75% Bits 2 and 3 must always
0 1 50% be kept at 0.
1 0 25%
1 1 12.5%
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
680434 International dial tone frequency
upper limit (high byte)
680435 International dial tone frequency
upper limit (low byte)
Hz (BCD) If both addresses
contain FF(H), tone
detection is disabled.
680436
International dial tone frequency
lower limit (high byte)
680437 International dial tone frequency
lower limit (low byte)
Hz (BCD)
If both addresses
contain FF(H), tone
detection is disabled.
680438
International dial tone detection
time
680439 International dial tone reset time
(LOW)
68043A International dial tone reset time
(HIGH)
68043B
International dial tone continuous
tone time
68043C International dial tone permissible
drop time
If 680438 contains FF,
the machine pauses for
the pause time (68043D
/ 68043E).
Belgium: See Note 2.
68043D
International dial wait interval
(HIGH)
68043E International dial wait interval
(LOW)
20 ms
68043F Country dial tone upper frequency
limit (HIGH)
680440
Country dial tone upper frequency
limit (LOW)
If both addresses
contain FF(H), tone
detection is disabled.
680441
Country dial tone lower frequency
limit (HIGH)
680442 Country dial tone lower frequency
limit (LOW)
Hz (BCD)
If both addresses
contain FF(H), tone
detection is disabled.