Ricoh M281 Series Service Manual page 960

NCU Parameters
13 68054C Make time for pulse dialing
14 68054D Time between final OHDI relay
closure and DO relay opening or
closing
15 68054E Minimum pause between dialed
digits (pulse dial mode)
16 68054F Time waited when a pause is
entered at the operation panel
17 680550 DTMF tone on time
18 680551 DTMF tone off time
19 680552 Tone attenuation level of DTMF
signals while dialing
20 680553 Tone attenuation value difference
between high frequency tone and
low frequency tone in DTMF
signals
21 680554 PSTN: DTMF tone attenuation
level after dialling
22 680555 ISDN: DTMF tone attenuation level
after dialling

A: Pulse dial parameters (addresses 68054A to 68054F) are the values for 10 pps. If 20
pps is used, the machine automatically compensates.

B: The first ring may not be detected until 1 to 2.5 wavelengths after the time specified by
this parameter.

C: The calculated level must be between 0 and 10.
The attenuation levels calculated from RAM data are:
High frequency tone:
D255/D256 FAX OPTION
1 ms
1 ms
20 ms
1 ms
-N x 0.5
–3.5 dBm
-dBm x 0.5
-N x 0.5
–3.5 dBm
-dBm x 0.5
126
See Note A.
SP2-103-014
EU only.
SP2-103-015
See Notes A, D and
E.
See Note A and E.
SP2-103-016
SP2-103-017
See Note A.
SP2-103-018
SP2-103-019
SP2-103-020
See Note C.
SP2-103-021
The setting must be
less than –5dBm,
and should not
exceed the setting
at 680552h above.
See Note C.
SP2-103-022
See Note C.
See Note C
SM