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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 many types of computers and computer
video cards on the market today. There are also
numerous data monitors and large screen data
projectors. When a computer image is displayed 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 VA6834FC is a computer
video interface designed to resolve this
incompatibility.
The VA6834FC 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 interfaces. Interfaces do not change
the scan-rate or the resolution of the video signal.
An interface simply converts a computer video
signal to a pre-selected analog format.
The VA6834FC 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 VA6834FC
GENERAL
Inputs
1
Computer Video Input
Connector
15-pin HD Female
Outputs
Local Monitor Output +
2 Main Video Outputs
Local Monitor Connector 15-pin HD Female
Main Video Connector 2 sets of 6-BNC F
Compatibility
VGA/SVGA/XGA/
UXGA, Apple/MACII/
Quadra/G3, Sun/SGI
Workstations
Table 1. VA6843FC General
MECHANICAL VA6834FC
Width (inches) 8.50in
Height (inches) 1.75in
Depth (inches) 4.93in.
Weight (pounds) 2.0lbs.
Ship Weight (pounds) 2.8lbs.
Material 0.1" Aluminum
Finish Gray
Faceplate Lexan
T° Operating 10°C-35°C
T° Maximum 50°C
Humidity l
90% non-condensing
MTBF (calculations) 40,000 hrs
Table 2. VA6834FC Mechanical
ELECTRICAL VA6834FC
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- TTL(+/-)
Sync
Sync on Green -0.3V
Impedance 0.3 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
Minimum Video Bandwidth 350 MHz
Typical Video Bandwidth 425 MHz
Horizontal 15-130 kHz
Vertical 25-180 Hz
Horizontal Position Range
20 %
Cross-talk
39dB @ 100MHz
Power
Internal Power Supply 90-140V/200-240V
Power Consumption
Table 3. VA6834FC Electrical