Fixed Frequency
Fixed frequency monitors have been designed to work with a defined
horizontal refresh rate and vertical refresh rate. Any video signals that
do not fall within a narrow margin of these designed frequencies will cause
the monitor display to be useless. Generally horizontal or vertical hold
(or both) will be gone, possibly the monitor will notice things are bad and
shutdown.
If this is hard to understand, maybe you need to know more about how monitors work.
Multiple Frequency
Multiple Frequency monitors have been designed to work with a small number
of fixed frequencies (see Fixed Frequency
monitors)
If this is hard to understand, maybe you need to know more about how monitors work.
Multi-sync
Multi-sync monitors will examine the incoming video signals and determine
from them what horizontal and vertical frequencies to use. This could be
viewed as either a multiple frequency monitor with a very large number of
frequencies to choose from or as a fixed frequency
monitor with a very wide margin of tolerance.
If this is hard to understand, maybe you need to know more about how monitors work.
Sync on Green
"Sync on Green" is the term used to refer to the practise of using the green
video signal line to send the composite
sync pulses to the monitor. This does not cause interfearance with the
video signal because sync pulses are only sent during the "blanking" period
when there is no video signal going to the monitor anyway.
If this is hard to understand, maybe you need to know more about how monitors work.
Composite Sync
Composite Sync is what happens when the horizontal sync signal and the
vertical sync signal are combined into the one "composite" signal. This
works because the vertical sync pulse is much longer than the horizontal
sync pulse and there are no horizontal sync pulses required during the
vertical sync period. This requires only one wire for both the sync
signals.
If this is hard to understand, maybe you need to know more about how monitors work.
Separate Sync
The most basic method of sending the synchronization pulses to a monitor is
to use a different wire for the horizontal and the vertical sync pulses.
If this is hard to understand, maybe you need to know more about how monitors work.