Upstream
The direction of data flow towards the host. An upstream port is the port on a device electrically
closest to the host that generates upstream data traffic from the hub. Upstream ports receive
downstream data traffic.
RETURN TO TOP OF THE PAGE
V
Vertical refresh rate
Expressed in Hz, it is the number of frames (complete pictures) written to the screen every second.
RETURN TO TOP OF THE PAGE
file:///G|/CD MANUAL/813/190S7 NEW BASE(4-27)/190S7-2007/lcd/manual/ENGLISH/190S7/glossary/glossary.htm（第 9／9 页）2007-4-28 9:01:36
