Epson PX-8 Technical Manual page 163

REV.-A
Observed capstan motor control signal waveforms
(Top) Feedback signal from tacho gener-
ator - measured at IC2, pin 3.
(Bottom) 400 kHz basic clock signal
measured at IC2, pin. 2.
(Top) Capstan motor drive voltage input
- measured at IC, pin 2.
(Bottom) Voltage control signal -
measured at IC2, pin 6.
EXPLODED SIGNAL WAVE
3-17
50mV 100mV
1mS
A. A. A. /"'\.
G
-J----J~\J------J.~\J---+~V-+~
500mV
Fig. 3-26
2V
5
ms
--......
....
. ...
... d.
G
+ - - - - - - - - - - - - - - -
G
+ •• ••
a • • • • • • • • • • sa ...............
500mV
Fig. 3-27
50mV
100mV 1mS
50mV
Fig. 3-28