Below you will find brief information for VGA Extender GVGA EXT. The VGA Extender allows VGA video signals to be transmitted up to 135 meters via 4-paris CAT5 STP or UTP cable. Used in pairs, the VGA Extender is used in home or commercial applications as a smart, fast and cost-effective, eliminates costly and bulky VGA cable, allowing VGA monitors to be connected extended distances from the PC via standard twisted pair cable. Ideal for classrooms video distribution, lecture halls, retail kiosks, video information displays, overhead projector systems, PC-training systems, and tradeshows PC demo systems.
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CAT5 VGA Extender
ITEM NO.:
GVGA-EXT
The VGA Extender allows VGA video signals to be transmitted up to 135 meters via 4-paris CAT5 STP or
UTP cable. Used in pairs, the VGA Extender is used in home or commercial applications as a smart, fast
and cost-effective, eliminates costly and bulky VGA cable, allowing VGA monitors to be connected
extended distances from the PC via standard twisted pair cable. Ideal for classrooms video distribution,
lecture halls, retail kiosks, video information displays, overhead projector systems, PC-training systems,
and tradeshows PC demo systems.
Features:
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Passive device, no power required.
Including 2 units as transmitter and receiver.
Supports up to 1280x1024 pixels.
Up to 135 meters via standard 4 pairs CAT5 STP or UTP cable instead of VGA cable.
Transmitter built in virtual DDC to avoid improperly setting at resolution and frequency.
Transmitter built in sync mode selection for signal stability.
Receiver built in sync filter level adjustment for signal stability.
Perfect for classrooms, lecture halls, tradeshows, video information displays…etc.
Installation:
Recommend Cable:
1. CAT5e UTP/STP or CAT6 UTP cable.
2. There are some certain models or brands of monitors with very high demand at sync-sensitive,
recommend use STP (shielding twisted pair) cable to instead of UTP (unshielded twisted pair) cable.
RJ45 Pin Configuration: TIA/EIA 568B Wiring standard
1. Orange-white
2. Orange
3. Green-white
4. Blue
5. Blue-white
6. Green
7. Brown-white
8. Brown
Red +
Red H-Sync
Green +
Green V-Sync
Blue +
Blue -
Switch Setting:
GVGA-EXT-T Sync Mode Select
← Mode 1
→ Mode 2
1. For new type monitors, such like over 17” LCD Monitor, recommends setting at mode 1
for the best stability. If the picture not normal, then switch to Mode 2.
2. For old type monitors, such like CRT or under 17” LCD Monitor, recommend setting at
mode 2. If the picture still not normal after adjust the dip switch of GVGA-EXT-R.
Then please use STP (shielding twisted pair) cable.
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DIP Switch Setting:
GVGA-EXT-R Sync Filter Level
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↓↓↓↓↓ Level 0 (Min)
↑↓↓↓↓ Level 1
↓↑↓↓↓ Level 2
↓↓↑↓↓ Level 3
↓↓↓↑↓ Level 4
↓↓↓↓↑ Level 5 (Max)
Sync Filter is designed for using UTP CAT5 cabling.
Sync Filter level adjustment is to add the sync stability, but not adjust picture quality or
eliminate skew.
Since different brand monitor have different setting, so there is no recommended setting.
Please adjust the level based on picture stability. If no picture display or picture not stable, then
please use STP cable.
Caution:
1. The wiring must be away from electro magnetic equipment, i.e. microwave, wireless, hi voltage
cable…etc.
2. The maximum distances supported by the VGA Extender are dependent on the type of twisted pair
cable and image resolution of the PC’s VGA interface. Make sure that the maximum
recommended operational distances have not been exceeded.
3. All wiring is “straight-through” twisted pair cable, not being used for other LAN or telephone
equipment.
4. Do not connect the VGA Extender to a telecommunication outlet wired to unrelated equipment.
Troubleshooting at picture problem:
1. No picture display:
Check Link cable.
Check DIP switch setting.
Check VGA cable connect.
Change the resolution or frequency.
Change Link cable for STP cable.
2. Picture not stable or disappear intermittence or no picture display:
Check DIP switch setting.
Change the resolution or frequency.
Wiring away from electro magnetic equipments.
Change Link cable for STP cable.
3. Picture tilt:
Check DIP switch setting.
Change the resolution or frequency.
Change Link cable for STP cable.
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Panel View:
GVGA-EXT-T
GVGA-EXT-R
Max. Distance via CAT 5 Cable
640x480 pixels (15MHz)
135M
800x600 pixels (30MHz)
105M
1024x768 pixels (60MHz)
75M
1280x1024 pixels (100MHz)
60M
Specification:
ITEM NO.
Devices
Input Signals
Insertion Loss
Video Signal Return Loss
RJ45 Pin Configuration:
EIA 568B Wiring standard
Impedance
Setting Switch
Transmission Distance
Link Cable
Temperature
Dimensions
W x H x D mm
GVGA-EXT-T
DVR, PCs, Laptops
GVGA-EXT-R
VGA Monitors, Projectors
Video: 1 Vp-p
Horizontal & Vertical SYNC : TTL standard. 300kHz max. bandwidth
Less than 3dB per pair over the frequency range
-15dB max from DC to 60Mhz
R video (Red): Pin 1 (+),
Pin 2 (-) Balanced
G video (Green): Pin 4 (+),
Pin 5 (-) Balanced
B video (Blue): Pin 7 (+),
Pin 8 (-) Balanced
Horizontal Sync: Pin 3,
Vertical Sync: Pin 6
Input : RGB 75 ohms (DB15 HD)
Input : RGB 100 ohms (RJ45
Unbalanced
shielded) Balanced
Output : RGB 100 ohms (RJ45 Output : RGB 75 ohms (DB15 HD)
shielded) Balanced
Unbalanced
Horizontal and vertical sync : TTL standard
2 Stage Slide Switch
5 Stage Dip Switch
60 -135 meters depend on image resolution
CAT5 / CAT5e / CAT6 / STP or UTP Cable
Operation: 0 to 55 C, Storage: -20 TO 85 c, Humidity: up to 95%
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Application Tips to use CAT5 STP cable:
Following is the correct cable connection when use STP cable:
1. STP (shielding twisted pair) Cable.
2. STP (shielding) RJ45 connector with STP cable connection.
If your RJ45 connector is plastic housing (unshielded), then the cable connection must do the
following:
1.
The ground cable must pull out around 5-10cm length to connect with VGA Extender’s ground screw
for grounding.
2.
Make the ground cable connect to ground screw, then plug RJ45 connector.
4
Up to 135 meters via standard 4 pairs CAT5 STP or UTP cable instead of VGA cable.
Transmitter built in virtual DDC to avoid improperly setting at resolution and frequency.
Transmitter built in sync mode selection for signal stability.
Receiver built in sync filter level adjustment for signal stability.
Perfect for classrooms, lecture halls, tradeshows, video information displays...etc.
Frequently Answers and Questions
What is the maximum transmission distance?
The maximum distance supported depends on the resolution and type of cable used. For 1280x1024 pixels, the maximum distance is 60 meters. For 1024x768 pixels, the maximum distance is 75 meters. For 800x600 pixels, the maximum distance is 105 meters. For 640x480 pixels, the maximum distance is 135 meters.
What type of cable should I use?
CAT5e UTP/STP or CAT6 UTP cable is recommended. For monitors with very high demand at sync-sensitive, recommend using STP (shielding twisted pair) cable to instead of UTP (unshielded twisted pair) cable.
What is the purpose of the DIP switch on the receiver?
The DIP switch on the receiver adjusts the sync filter level. This helps to improve signal stability but does not adjust picture quality or eliminate skew.
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