Oce 3121 Technical & Service Manual page 904

Tone Signal: Reception Test (Tone TX)
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Press 'Tone TX' and press ' OK ' to start test the tone signal, and to invoke
the corresponding screen.
The frequency selected by closing the DC circuit and the DTMF signal will
be detected. Use is made of the tone detection function of the modem and the
DTMF reception function. The frequencies checked are as follows:
462, tolerance 14 Hz
1100, tolerance 30 Hz
2100, tolerance 25 Hz
To interrupt, press 'CANCEL '.
' * 8 * 10 TEST ', 5 PRINT Function test (Faculty)
Use this mode to activate each function for testing.
92 TSM Océ 3121
The notation will change to ON
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when the applicable frequency
(1 through 3) is detected.
A notation will be displayed
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upon detection of the DTMF
signal.
The tone input source may be
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selected as follows: External:
from line; Internal: from re-
mote
SDS Description