Gestetner A193 Service Manual page 664

NCU PARAMETERS
Address
480482 Bits 0 and 1 - Handset off-hook detection time
Bit 1
0
0
Other
Bits 2 and 3 - Handset on-hook detection time
Bit 3
0
0
Other
Bits 4 to 7 - Not used
Not used
480483
to
4804A0
4804A1 Acceptable CED detection
frequency upper limit (high byte)
4804A2 Acceptable CED detection
frequency upper limit (low byte)
4804A3 Acceptable CED detection
frequency lower limit (high byte)
4804A4 Acceptable CED detection
frequency lower limit (low byte)
4804A5 CED detection time
4804A6 Acceptable CNG detection
frequency upper limit (high byte)
4804A7 Acceptable CNG detection
frequency upper limit (low byte)
4804A8 Acceptable CNG detection
frequency lower limit (high byte)
4804A9 Acceptable CNG detection
frequency lower limit (low byte)
4804AA CNG detection time
4804AB CNG on time
4804AC CNG off time
4804AD CNG On/Off time tolerance, 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).
Bits 7, 6, 5, 4 - number of cycles required for cadence detection
Bits 3 and 2 - Not used. Keep these bit at 0.
Bits 1 and 0 - Tolerance (±)
Bit
4804AE Not used
SM
Function
0 Setting
0 200 ms
1 800 ms
Not used
2 Setting
0 200 ms
1 800 ms
Not used
1 0 ON time tolerance
0 0 150%
0 1 100%
1 0 50%
1 1 25%
Unit
Do not change the settings.
BCD (Hz) If both addresses contain
FF(F), tone detection is
disabled.
BCD (Hz) If both addresses contain
FF(F), tone detection is
disabled.
20 ms Factory setting: 200 ms
± 20 ms
BCD (Hz) If both addresses contain
FF(F), tone detection is
disabled.
BCD (Hz) If both addresses contain
FF(F), tone detection is
disabled.
20 ms Factory setting: 200 ms
± 20 ms
20 ms Factory setting: 500 ms
20 ms Factory setting: 200 ms
OFF time tolerance
75%
50%
25%
12.5%
Do not change the settings.
4-60
Remarks
(A639)