Appendix A: Glossary
A-6
User’s Manual
The time required by the video amplifier of the projector to increase its output from
10% to 90% of the maximum value.
The video output (analog or digital) of most computers. Analog RGB video can have
3, 4, or 5 wires — one each for red, green, and blue, and either none, one or two for
sync. For three-wire RGB, the green wire usually provides sync. (See TTL Video).
A common asynchronous data transmission standard recommended by the Electronics
Industries Association (EIA). Also called serial communication.
A less common asynchronous data transmission standard in which balanced
differential voltage is specified. RS-422 is especially suited to long distances.
The output from certain video tape players and video equipment. S-Video separates
sync and luminance from color information, typically producing a higher quality
display than composite video.
The horizontal or vertical frequency at which images are generated. Also known as
scan rate or refresh rate.
One horizontal line on the display.
The horizontal or vertical frequency at which images are generated.
A video output format of some video tape and disk players (used primarily in France).
SECAM (Sequential Couleur á Mémoire) signals are similar in resolution and
frequency to PAL signals. The primary difference between the two standards is in the
way color information is encoded.
A slidebar is a graphical display of an adjustable setting. The numerical setting often
represents a percentage but can be a specific unit such as degrees Kelvin.
The device, such as a computer or VCR, connected to the projector for display. A
source may have numerous corresponding channels defined and recognized by the
projector. See Input.
See Channel.
A signal selector that can be connected to a projector for the purpose of adding more
sources.
This term refers to the part of the video signal that is used to stabilize the picture.
Sync can occur in three forms:
1)
"Composite sync": the horizontal and vertical components are together on one
cable.
2)
"Sync-on-green": the sync is part of the green video.
3)
"Separate sync" or "H.SYNC and V.SYNC": the horizontal and vertical
components of the sync are on two separate cables.
The duration of each sync pulse generated by a computer. The sync width is part of
the blanking time.
A type of RGB video with digital characteristics.
Rise
Time
'
RGB
Video
'
RS-232
'
RS-422
'
S-Video
'
Scan
Frequency
'
Scan
Line
'
Scan
Rate
'
SECAM
'
Slidebar
'
Source
'
Source
Setup
'
Switcher
'
Sync
'
Sync Width
'
TTL
Video
'
Summary of Contents for DS+4K
Page 2: ......
Page 11: ...Section 2 Installation and Setup User s Manual 2 7 Figure 2 2 Vertical Offset Examples...
Page 12: ...Section 2 Installation and Setup 2 8 User s Manual Figure 2 3 Lens Vertical Offsets...
Page 14: ...Section 2 Installation and Setup 2 10 User s Manual Figure 2 5 Lens Horizontal Offsets...
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Page 75: ...Section 3 Operation User s Manual 3 53 Figure 3 29 Customizing the Input Signal...
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Page 102: ...Section 4 Maintenance 4 10 User s Manual Figure 4 8...
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Page 124: ...Appendix C Serial Communication Cables C 2 User s Manual...
Page 126: ...Appendix D Throw Distance D 2 User s Manual...
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