Ricoh D065 Service Manual page 1149

NCU Parameters
Address
68052C Busy tone ON time: range 2
68052D Busy tone OFF time: range 2
68052E Busy tone ON time: range 3
68052F Busy tone OFF time: range 3
680530 Busy tone ON time: range 4
680531 Busy tone OFF time: range 4
Busy tone continuous tone detection
680532
time
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
680533
0
1
1
Bits 2 and 3 must always be kept at 0.
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
International dial tone frequency
680534
upper limit (high byte)
International dial tone frequency
680535
upper limit (low byte)
International dial tone frequency
680536
lower limit (high byte)
D418
Function
Bit 0
0 75%
1 50%
0 25%
1 12.5%
136
Unit
20 ms
If both addresses contain
Hz (BCD) FF(H), tone detection is
disabled.
If both addresses contain
Hz (BCD)
FF(H), tone detection is
Remarks
SM