Canon GP160DF Service Manual page 570

CHAPTER 4 SERVICE MODE
b) Frequency test
When 2 on the numeric key pad in the MODEM NCU TEST menu is pressed, the
frequency test is selected.
This test uses the telephone line connection terminal and the speaker to output the
frequency signals shown below from the modem. Changes in frequency are made using
the numeric key pad.
Numeric key pad
1
2
3
4
5
6
7
Remarks:
Frequency and each frequency's output level conform to the service mode's output
level setting.
c) G3 signal transmission test
When 4 on the numeric key pad in the MODEM NCU TEST menu is pressed, the G3
signal transmission test is selected. This test uses the telephone line connection termi-
nal and the speaker to output the G3 signals shown below from the modem. Change the
output speed using the numeric key pad and then check the signals.
Numeric key pad
0
1
2
3
4
5
6
7
8
Remarks:
The output level of each signal conforms to the service mode settings.
4-68
Frequency
462Hz
1100Hz
1300Hz
1500Hz
1650Hz
1850Hz
2100Hz
Output speed
300bps
2400bps
4800bps
7200bps
9600bps
TC7200bps
TC9600bps
12000bps
14400bps