JVC 250 Service Manual page 190

Vertical Scan Frequency
Vertical Scan
Reversal Jumper
Vertical Synchronization
Frequency
Xenon Arc Lamp
Model 250 Service Manual
alternating white and black horizontal lines that
can be counted from the top of the picture to the
bottom.
The number of times per second a display image
is written or refreshed.
Reverses the image vertically for use with
mirror-bounced displays. Located on the Scan
Reversal PCB.
The number of times per second a frame is
transmitted to a video display screen.
See Arc Lamp.
Glossary
A-5