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INTERFACES
3
• Any changes or modifications to the unit not
expressly approved by Altinex, Inc. could void
the user’s authority to operate the equipment.
ABOUT YOUR INTERFACE 2
There are varieties of computers and computer
video cards on the market today. There are also
several data monitors and large screen data
projectors. When displaying a computer image on
a large screen data projector or on a large screen
monitor, it often becomes clear that some
computers are not always compatible with certain
display devices. The VA6835FC is a computer
video interface designed to resolve this
incompatibility.
The VA6835FC is a dual output computer Video
Interface. It is designed to interface a single VGA/
SVGA/ XGA/ UXGA/ MAC/ SUN or SGI computer
video source to two scan-rate compatible
presentation monitors or data projectors.
It is important to understand the general
capabilities of this interface. The VA6835FC does
not change the scan-rate or the resolutions of the
video signal so the source (computer) and display
(projector or monitor) must be scan-rate
compatible. The VA6835FC simply converts a
computer video signal to a pre-selected analog
format or separates the sync signal from the green
signal on output 1 if the input signal is RGsB.
The VA6835FC is a state-of-the art piece of
equipment with an exceptional combination of
compact size, advanced features, and very
competitive pricing.
TECHNICAL SPECIFICATIONS 3
FEATURES/DESCRIPTION VA6835FC
GENERAL
Input
1
Computer Video Input
Connector
15-pin HD Female
Output
Local Monitor Output +
Two Main Video
Outputs
Local Monitor Output
Connector
15-pin HD Female
Main Video Output
Connector
Two sets of 6 BNC
Female
Compatibility
VGA/
SVGA/XGA/UXGA,
Apple/MACII/Quadra/G
3, Sun/SGI
Workstations
Table 1. VA6835FC General
MECHANICAL VA6835FC
Width (inches) 8.50in (216mm)
Height (inches) 1.75in (44mm)
Depth (inches) 4.93in. (125mm)
Weight (pounds) 2.0lbs (0.91kg)
Ship Weight (pounds) 4.0lbs (1.82kg)
Material 0.1" Aluminum
Finish Gray
Faceplate Lexan
T° Operating 10°C-35°C
T° Maximum 50°C
Humidity Technical
90% non-condensing
MTBF (calculations) 40,000 hrs
Table 2. VA6835FC Mechanical
ELECTRICAL VA6835FC
Input Video Signal
Analog Signal 0.3 to 1.2 volt p-p
Impedance 75 Ohms
Rise/Fall Time (ns) 0.9
Input Sync Signal
Horizontal, Vertical, & C-Sync TTL(+/-)
Sync on Green -0.3V
Impedance 10 k Ohms
Output Video Signals
Analog Signal 0.77 V p-p
Impedance 75 Ohms
Rise/Fall Time (ns) 1.2
Output Sync Signal
Composite Sync TTL(+/-)
Sync on Green -0.3V
Impedance 22 Ohms
Frequency Compatibility
Horizontal 15-130 kHz
Vertical 25-180 Hz
Minimum Video Bandwidth 350 MHz
Typical Video Bandwidth 425 MHz