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Baud rate clock
The baud rate clock adjusts the voltage applied to pin 7 of timer IC, and necessary frequencies are
picked up.
For readjustment, adjust the VRs by connecting oscilloscope to the TP-12.
The relation between the baud rate, frequency, and time is as follows:
Baud rate Frequency (f) Hz Time (T) ms
45.5
50
57 (56.92)
75 (74.2)
110
300
728
800
910.7
1187.2
1760
4800
1.37
1.25
1.1
0.842
0.568
0.208
Layout of adjusting VRs and test points
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