AA2805 Network VGA Extender with Audio
Introduction
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The VGA network Extender enables you to transmit VGA signals up to 150M away
with a resolution of upto 1024 x 768. Featuring common mode noise suppression
circuit for superb VGA quality via inexpensive unshielded twisted pair network
cables. The local unit duplicates the input signal for local use and transmits
the VGA signal to a remote unit. Upon receiving the VGA signal via an RJ45 connector,
the remote unit broadcasts the signal to two VGA outputs. A convenient gain (equalisation)
control selector on the remote unit is design for optimum signal clarity according
to the length of the network cable.
Ideal for public broadcasting, exhibitions, retail stores, courtrooms, bus
stations and many more applications.
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Features
- Supports SVGA and Audio
- Supports a maximum distance of 150M (492 feet)
- SVGA resolution upto 1024 x 768
- Ultra compact
- Compatible with CAT5, CAT5e and CAT6 UTP cables.
- LED Power and Activity indicators
- Gain Control on remote unit
- Local and remote units support two VGA and two audio outputs
Package Contents
- Local unit
- Remote Unit
- Power supplies for each unit
- User manual
- 2 sets of rubber feet
Network cable
The Extender pair require a UTP (Unshielded twisted pair) network cables no
longer than 150M (490 feet). The network cable can be compliant Cat5, Cat5e or
Cat6.
The cables should be wired according to the EIA/TIA 568B Industry standard
as given below:
Pin
|
Wire colour
|
Pair
|
Function
|
|
1
|
White/Orange
|
2
|
T
|
|
2
|
Orange
|
2
|
R
|
|
3
|
White/Green
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3
|
T
|
|
4
|
Blue
|
1
|
R
|
|
5
|
White/Blue
|
1
|
T
|
|
6
|
Green
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3
|
R
|
|
7
|
White/Brown
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4
|
T
|
|
8
|
Brown
|
4
|
R
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NOTE: CAT5, CAT5e or CAT6 cables can be used with the extender pair.
Audio
The unit accepts one stereo signal input on an audio jack plug. This stereo
signal is broadcast to the two local audio outputs and is "mixed" together
to form a mono signal before being transmitted to the remote unit via a network
cable.
NOTE:
Therefore, the left channel and the right channel audio signals at the remote
unit are the same.
Operation
LED
There are two LED's on the local unit. The Power LED must be illuminated indicating
the unit is properly powered. The Active LED illuminates when there is a VGA input
signal.
Equaliser Selector
Yo may adjust the equaliser selector on the remote unit to get optimum video
signal lengths on the selector indicating different lengths of cable. The following
table can be used as a references for selecting the equaliser.
Network Cable Length
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Equaliser Position
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Meters
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Feet
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0 ~ 40
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0 ~ 131
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1
|
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40 ~ 80
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131 ~ 262
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2
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80 ~ 120
|
262 ~ 394
|
3
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120 ~ 160
|
394 ~ 525
|
4
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Specification
VGA CAT5 Extender with audio
|
EVA214
|
EVA12L
|
EVA02RT
|
| Purpose |
Local unit for VGA source + audio source |
Remote unit for VGA extension + audio extension |
| RJ45, CAT5 connector |
Extension output for VGA + audio |
Extension input for VGA + audio |
| Cable between units |
CAT5, CAT5e and CAT6 |
| Maximum distance |
150M at a resolution of 1024 x 768 |
| VGA input port |
HDB15, female x 1 |
N/A
|
| VGA output port |
HDB15, female x 2 |
| Audio input port |
Stereo jack (female) x 1 |
N/A
|
| Audio output port |
Stereo jack (female) x 2 |
Mono jack (female) x 2 |
| Equaliser selector |
N/A
|
4 position slide switch |
| Status indicator |
Power (green), Active (yellow) |
| Operating voltage |
9V DC, 600mA |
9V DC, 600mA |
Trouble Shooting
Symptom
|
Solution
|
| No VGA signals at the Remote unit. |
- Both units must be powered
- Active LED on the local unit and the remote unit must be illuminated indicating
the signal is correct
|
| VGA signal garbled |
Make sure the wires are correctly wired inside the cable according to EIA568A
or EIA568B standard |
| Active LED at the remote is always off |
- The active LED of the local unit must be on. Check the wiring of the CAT5
cable.
- Make sure the power LED of the remote unit is on.
|
| VGA quality changes with the change of CAT5 cable |
Use the equaliser selector to adjust the VGA signal for various cable lengths
and characteristics |
| No audio signal at the remote end |
Make sure the volume is high enough |
| Audio signal at the remote unit becomes mono |
The local unit mixes the left and right audio signals into a mono signal before
transmitting to the remote unit. |
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