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EXTENDER VGA TRVGA-300-P

Net: 121.75 EUR  Gross: 121.75 EUR

INDEX - Product ID: 6567
- Polish product
7 - A moderate quantity of pieces in stock
Poznań, Graniczna 10
3
Sales Showroom
Shipment
Poznań, Kopanina 54/56
4
Shipment
Personal collection at the branch
Poznań - Ext. warehouse
0
Shipment +2 dni
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DESCRIPTION

The TRVGA-300-P is designed for active transmission of the VGA signal via twisted-pair cable for the distance up to 300m. The transmitter converts the VGA signal, what enables its transmission via twisted-pair cable. Three pairs of wires allow to RGB signals transmission, the fourth pair - the synchronization of the transmission.

The device is equipped with overvoltage protection of the symmetrical line. The transmitter and receiver are sold as a set and a both devices need to be used for complete channel transmission.

Transmitter and receiver are in the kit.

SPECIFICATION
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Device type:
Active / Transmitter
Number of channels: VGA
Power supply: 12 V / 70 mA (power adapter not included)
Video transmission range: max. 300 m
Symmetrical socket impedance: 100 Ω
Connectors type: VGA Socket
Symmetrical socket type: RJ-45 (8-pin, 4 pairs) Socket
Weight: 0.078 kg
Dimensions: 118  x 30  x 48 mm
Device type:
Active / Receiver
Number of channels: VGA
Power supply: 12 V / 170 mA (power adapter not included)
Video transmission range: max. 300 m
Symmetrical socket impedance: 100 Ω
Connectors type: VGA Socket female
Symmetrical socket type: RJ-45 (8-pin, 4 pairs) Socket
Weight: 0.078 kg
Dimensions: 118  x 30  x 54 mm
Main features:
  • Short-circuit protection
  • Signal correction
  • Resolution:
  • 1920  x 1200  / 80 Hz @ 100 m
  • 1024  x 768  / 60 Hz @ 300 m
  • Manufacturer / Brand: DELTA
    Guarantee: 3 years
    PRESENTATION
    EXTENDER VGA TRVGA 300 P
    Transmitter and receiver respectively: 
    EXTENDER VGA TRVGA 300 P
     
    EXTENDER VGA TRVGA 300 P
    Transmitter and receiver - top view: 
     
    EXTENDER VGA TRVGA 300 P
     
    EXTENDER VGA TRVGA 300 P
    The switchers settings for different twisted-pair cable length: 
    EXTENDER VGA TRVGA 300 P
    The TRVGA-300-P transmitter and receiver schematic diagram: 
    EXTENDER VGA TRVGA 300 P
    1) TRVGA-300-P TRANSMITTER
    2) TRVGA-300-P receiver
    3) Computer
    4) Monitor
     
    Each of RGB channels (each color) is transmitted via one pair of the twisted-pair cable. The length of the particular pair of wires in twisted-pair cable can be different from others. For long distances the differences are considerable. It causes the colors shift on the image. It is visible especially for long distances. In case of 300m distance the colors shift can be equal even two pixels. The resolve of the problem is the same length of each pair of wires for each RGB channel. To do that, we have to divide the distance between the transmitter and the receiver into three equal parts. For each part, it's necessary to change the pair of wires for the particular RGB channel. It means that each RGB channel is transmitted via three different pairs for the whole distance of the cable. This idea is presented on the picture below. This is not necessary to change the pairs for synchronization transmission.
    Schematic diagram of the pairs length compensation idea (crossover solution): 
    EXTENDER VGA TRVGA 300 P
    1) Transmitter
    2) Receiver
    3) Synchronization
     
    The other way to eliminate the shifted colors problem is increase the length of the shorter pairs of wires. In this case is the necessary to check the length of the particular pairs. The simple way to do it is the white line test. We can generate the test image (for example in "Paint" application) as follows: on the monitor screen draw the vertical white line (1-pixel width) on the black background. If the shifted colors problem occurs, we will see the colors shifted lines - see the picture below.
    Test image after twisted-pair cable transmission - the shifted colors problem: 
    EXTENDER VGA TRVGA 300 P
    1) White vertical line
    2) Testing signal from the computer
    3) The shifted RGB colors problem
    4) Image from the monitor
     
    If the resolution equals 1280x1024 pixels and vertical line frequency is 60Hz, the horizontal line time is 14,6us. This is 11,4ns for the pixel (14,6us / 1280). The electrical current speed in the twisted-pair cable is about 192mlns m/s. If the shift is equal 1 pixel, the shortage of the pair length is 2,19m (192mlns m/s * 11,4ns * 1). In case of 2 pixels it equals 4,38m. The length of the pair of wire has to be increase if the proper RGB channel is shifted (on the right side of tested line). See the picture 3b. The length compensation allows to eliminate this problem. In practice the shifted colors problem doesn't exist below the distance of 50m. The length differences of the pairs can be measured by ohmmeter, too. The shorter length means smaller resistance.
    Connectors description: 
    EXTENDER VGA TRVGA 300 P
    Wiring sequence inside the plug (based on colors): 
    EXTENDER VGA TRVGA 300 P
    FILES
    Data Sheet
    100 KB
    CE
    250 KB
    User Manual
    300 KB
    PACKAGE
    Dimensions (L x W x H): 120x65x65 mmPackage: CartonGross Weight: 0.170 kg

    COMPONENTS OF WORKING WITH: TRVGA-300-P