Ricoh B064 SERIES Service Manual page 1428

NCU PARAMETERS
NOTE: 1) If a setting is not required, store FF in the address.
2) Italy and Belgium only
RAM address 68055E: the lower four bits have the following meaning.
Bit 2 - 1: International dial tone cadence detection enabled (Belgium)
Bit 1 - Not used
Bit 0 - 1: PSTN dial tone cadence detection enabled (Italy)
If bit 0 or bit 2 is set to 1, the functions of the following RAM addresses
are changed.
680508 (if bit 0 = 1) or 680538 (if bit 2 = 1): tolerance for on or off state
duration (%), and number of cycles required for detection, coded as in
address 680533.
68050B (if bit 0 = 1) or 68053B (if bit 2 = 1): on time, hex code (unit = 20
ms)
68050C (if bit 0 = 1) or 68053C (if bit 2 = 1): off time, hex code (unit = 20
ms)
3) Pulse dial parameters (addresses 68054A to 68054F) are the values for
10 pps. If 20 pps is used, the machine automatically compensates.
4) The first ring may not be detected until 1 to 2.5 wavelengths after the
time specified by this parameter.
5) The calculated level must be between 0 and 10.
The attenuation levels calculated from RAM data are:
High frequency tone:
• – 0.5 x N
• – 0.5 x N
Low frequency tone:
• 0.5 x (N
• – 0.5 x (N
NOTE: N680552, for example, means the value stored in address
6) 68054A: Europe - Between Ds opening and Di opening, France -
Between Ds closing and Di opening
68054D: Europe - Between Ds closing and Di closing, France - Between
Ds opening and Di closing
7) Tone signals which frequency is lower than 1500Hz (e.g., 800Hz tone
for AI short protocol) refer to the setting at 6805B5h. Tones which
frequency is higher than 1500Hz refer to the setting at 6805B6h.
8) 68054A, 68054D, 68054E: The actual inter-digit pause (pulse dial mode)
is the sum of the period specified by the RAM addresses 68054A,
68054D, and 68054E.
B819/B820
CÓPIA NÃO CONTROLADA
/ –3.5 dBm
680552 680554
dBm
680555
/ + N
680552 680554 680553
+ N
680555 680553
680552(H)
CÓPIA NÃO CONTROLADA
) –3.5 dBm
) dBm
118 SM