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Appendix A
Glossary
RPMX/CX50/CX60/CX67 User’s Manual A-1
This appendix defines the specific terms used in this manual as they apply to this
projector. Also included are other general terms commonly used in the projection
industry.
The time, inside one horizontal scan line, during which video is generated.
The ability of a screen to reflect ambient light in a direction away from the "line of
best viewing". Curved screens usually have good ambient light rejection. Flat screens
usually have less ambient light rejection.
The video output of most computers and videotape machines. Analog video can
generate a large number of colors.
The ratio of the width of an image to its height, such as the 4:3 aspect ratio common
in video output.
The ability of the projector to automatically recognize and synchronize to the
horizontal and vertical scan frequencies of an input signal for proper display.
The frequency range of the projector's video amplifier.
The speed at which serial communications travel from their origin. In this projector,
the RS-232 or RS-422 default baud rate of 19200 can be changed to match a
controlling device. The switcher baud rate of 9600 cannot be changed.
The time inside one scan line during which video is not generated. The blanking time
of the input signal must be equal to or greater than the retrace time of the projector.
In projection, brightness usually describes the amount of light emitted from a surface
such as a screen. It is measured in foot-lamberts or candelas per square meter.
Unit of measure for measuring intensity of light.
A collection of measurements stored by the projector for a given input source,
including frequencies, pulse width, polarity, syncs, channel number and location,
user-adjustable display settings, etc. Use channels to switch between a variety of
setups quickly, automatically recalling previously defined display parameters.
A list/menu of previously-defined channels available in projector memory.
A number that uniquely identifies a specific channel retained in projector memory.
The projector can retain up to 99 channels.
A
ctive Line Time '
A
mbient Li
g
ht Re
j
ection '
A
nalo
g
Video '
A
s
p
ect Ratio '
A
uto Source '
Bandwidth '
Baud Rate '
Blankin
g
Time '
Bri
g
htness '
Candela or Candle '
Channel '
Channel Lis
t
'
Channel Number '