— 11 —
Vcom Adjustment
* Place a photo diode on the middle of the display plate.
EV-2500
set
Photo
diode
ON
OFF
H
M
L
AV-C1
Audio/Video jack
Bandpass
filter
Oscilloscope
Photo sensor amp.
Adjust to obtain the minimum
ripple.
VR303
Photo sensor
amp.
Bandpass filter
Oscilloscope
Free-Running Frequency Adjustment
Frequency
counter
VR740
TP6
Output
TP6
Adjust to obtain a reading of
15.73
±
0.1 kHz.
Adjust
Result
Input
Input
Input
Output
Output
Connection Point
Signal
Connection
Point
EV-2500
set
Frequency
counter
