Runco Vx 3c Projector User Manual

RS-232 PROTOCOL
9600 Baud
8 bits
No parity
1 Stop bit
ASCII
RxD of the PC or TxD of the VHD is on pin2
TxD of the PC or RxD of the VHD is on pin3
Gnd is pin 5
RTS of the PC or CTS of the VHD is on pin7 (not used)
CTS of the PC or RTS of the VHD in on pin8 (not used)
Command format 
Inputs: Aspect Ratios: Power:
0 = Composite A = Anamorphic ON = Power on
1 = S-Video L = LetterBox OF = Power off
2 = Component S = Standard (4:3)
3 = Pass Through C = Computer (for Pass-Through)
R = RGB HDTV (for...

6-20
Inputs:(1) Component, (1) S-video, (1) Composite, (1) Pass-through
Inp ut s tand ards:  NTSC  (PAL , NTSC export version )
Output formats: 1024 x 575 (anamorphic), 768 x 575 (wide screens), 1024 x 768 (4:3 screens)
Bandwidth:Video inputs: 0-5.5 Mhz
Pass-through: 100 Mhz
Power input:120V (220V export model), 50/60 Hz
Power 
consumption:15W
Control Options:RS-232, Infrared, Front panel
Operating
environment:41-95° F (5-35° C)
0-90% humidity (non-condensing)
Dimensions: Width: 17.45 in./443.23 mm...

A-1
Appendix A
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.
Active Line Time!The time, inside one horizontal scan line, during which video is generated.
Ambient Light Rejection!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...

A-2
GLOSSARY
Checkbox!A menu item that indicates whether an option is currently in effect (checked) or
not (unchecked).
Color Shift!A change in the color of a white field across an image (white field uniformity).
Color Temperature!The coloration (reddish, white, bluish, greenish, etc.) of white in an image,
measured using the Kelvin (degrees K) temperature scale. Higher temperatures
appear bluer, while lower color temperatures appear redder.
Component Video!See YCbCr or YPbPr.
Composite Video!The output...

A-3
GLOSSARY
a 10 gain screen appears 10 times brighter than it would if reflected off a matte
white wall. Curved screens usually have larger gain than flat screens.
Help Screen!A display of help information regarding the current task or presentation.
Horizontal Frequency!The frequency at which scan lines are generated, which varies amongst sources.
Also called horizontal scan rate or line rate.
Horizontal Offset!The difference between the center of the projected image and the center of the
projector...

A-4
GLOSSARY
Menu!A list of selectable options displayed on the screen.
NTSC Video!A video output format of some video tape and disk players. There are two types
of NTSC (National Television Standards Committee) video: NTSC 3.58 and
NTSC 4.43. NTSC 3.58 is used primarily in North America and Japan. NTSC
4.43 is less commonly used.
Optical Screen!A type of rear-projection screen which re-directs light through the screen to
increase image brightness in front of the screen. Screen gain is usually greater...

A-5
GLOSSARY
RGB Video!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).
RS-232!A common asynchronous data transmission standard recommended by the Electronics
Industries Association (EIA). Also called serial communication.
RS-422!A less common asynchronous data transmission standard in which balanced...

A-6
GLOSSARY
Throw Distance!The distance between the front feet of the projector and the screen. Also called
Projector-to-Screen Distance. Always use the correct throw distance formula to calcu-
late the proper throw distance (±5%) required for your lens.
Tint!Balance of red-to-green necessary for realistic representation of NTSC signals.
Variable Scan!The ability of a projector to synchronize to inputs with frequencies within a specified
range.
Vertical Frequency!The frequency at which images are...

B-1
KEYPAD REFERENCE
Figure B-1. Keypad
Appendix B 

C-1
Menu Tree
Appendix C