HDMI 1.3 over Single CAT5 Extender
User Manual
Made in Taiwan
Safety and Notice
The CV-57G HDMI 1.3 over Single CAT5 Extender has been tested for conformity to safety regulations and
requirements, and has been certified for international use. However, like all electronic equipments, the CV-57G
should be used with care. Please read and follow the safety instructions to protect yourself from possible injury
and to minimize the risk of damage to the unit.
 Follow all instructions and warnings marked on this unit.
 Do not attempt to service this unit yourself, except where explained in this manual.
 Provide proper ventilation and air circulation and do not use near water.
 Keep objects that might damage the device and assure that the placement of this unit is on a stable surface.
 Use only the power adapter and power cords and connection cables designed for this unit.
 Do not use liquid or aerosol cleaners to clean this unit. Always unplug the power to the device before
The CV-57G HDMI 1.3 over Single CAT5 Extender boosts up your video/audio transmission distance up to
60m (200ft) in HDTV 1080i format, 40m (130ft) in HDTV 1080p format, and 20m (65ft) in HDTV 1080p with 36
bit color depth. With only one cost effective LAN cable, users can readily extend HDTV sources from DVD players,
Blu-ray Disc player, PS3, PC, and any other kinds of sources compliant with TMDS to distant display monitors
including HDMI/DVI enabled TV sets or LCD PC monitors. With the state-of-the-art Silicon Image chipsets
equipped, deep color video, DTS-HD or Dolby TrueHD audio, and HDCP supports and compatibility are all further
insured. This flexibility makes HDCP compliant DVD players or PS3 transmit utmost high quality video and audio
with a greater distance at the minimal cost, when integrating several components apart.
The CV-57G includes two units: transmitting (CV-57G-TX) and receiving (CV-57G-RX) units. The transmitting
unit is used to capture the input HDMI/DVI signals and carry the signals through one RJ-45 connector into one
cost effective CAT-5/5e/6 LAN cable. The receiving unit is responsible for equalizing the sent TMDS multimedia
data. The transmission distance between the sending and receiving units can be up to 60m (200ft) under HD
(720p/1080i) or 40m (130ft) under Full HD (1080p). With an 8-level equalization control knob on the receiving
unit, users can adjust the equalization strength to the received TMDS signals accordingly, and therefore optimize
the transmission distance between source and destination.
 State-of-the-art Silicon Image (founder of HDMI) chipset embedded for upmost compatibility and reliability
 HDMI 1.3c compliant
 Extend the transmission length up to 60m (200ft) from the HDMI sources under HD resolution (1080i or
720p at 8 bit color depth)
 Extend the transmission length up to 40m (130ft) from the HDMI sources under Full HD resolution (1080p at
8 bit color depth)
 Extend the transmission length up to 20m (65ft) from the HDMI sources under Full HD resolution (1080p at
12 bit color depth)
 HDCP 1.1 compliant
 Minimize the cable skew by adjustable 8-level equalization control
 Pure unaltered uncompressed 7.1ch digital HDMI over LAN cable transmission
 DTS-HD and Dolby True HD high bit rate audio support
 Allows cascading
 Perfectly integrated with other HDMI over CAT5 series products
The length depends on the characteristics and quality of the cables. Higher resolutions and longer
transmission distances require low skew cables (<25ns/100m) for best performance. Unshielded CAT6
with metal RJ-45 connectors is recommended.
Specifications & Package Contents
Model Name
Role of usage
HDMI compliance
HDCP compliance
Video bandwidth
Video support
Transmission (8 bit)
Audio support
Input TMDS signal
Input DDC signal
ESD protection
PCB stack-up
aka CV-715
aka CV-715
Transmitter [TX]
Receiver [RX]
Transmitter [TX]
Receiver [RX]
Transmitter [TX]
Receiver [RX]
HDMI 1.3c
IR remote control
Controllable through IR control path
from IR receiver at receiver sites
Electro-optical characteristics: τ = 25°
Carrier frequency: 38kHz
Power supply
Power consumption
Operation temperature
Storage temperature
Relative humidity
Package Contents
Type A [19-pin female]
WE/SS 8P8C with 2 LED indicators
IR emitter
IR receiver
[L x W x H]
HDMI 1.2a
Single-link 340MHz [10.2Gbps]
Single-link 165MHz [4.95Gbps]
480i / 480p / 720p / 1080i / 1080p60
Full HD (1080p)-40m (130ft) [CAT5e] / 50m (165ft) [CAT6]
HD (720p/1080i)-50m (165ft) [CAT5e] / 60m (200ft) [CAT6]
Surround sound (up to 7.1ch) or stereo digital audio
8-level digital control at RX
1.2 Volts [peak-to-peak]
5 Volts [peak-to-peak, TTL]
[1] Human body model — ±15kV [air-gap discharge] & ±8kV [contact discharge]
[2] Core chipset — ±8kV
4-layer board [impedance control — differential 100Ω; single 50Ω]
2x RJ-45
1x RJ-45
1x RJ-45
1x 3.5mm
2x RJ-45
1x RJ-45
1x RJ-45
1x 3.5mm
HDMI source control
HDMI connector
RJ-45 connector
3.5mm connector
Rotary switch
315g [11.1oz]
685g [1.5 lbs]
5V 4A DC
1x CV-57G [TX & RX]
1x 5V power adapter
1x User Manual
Metal case
[TX/RX] – 85 x 60 x 25mm [3.3”x2.4”x1”]
270 x 175 x 80mm [10.6”x6.9”x3.1”]
450 x 370 x 300mm (1’5.7”x1’2.6”x11.8”]
320g [11.3oz]
315g [11.1oz]
720g [1.6 lbs]
715g [1.6 lbs]
Wall-mounting case upon request
5V 4A DC
5V 2A DC
1 Watt [max]
0~40°C [32~104°F]
-20~60°C [-4~140°F]
20~90% RH [no condensation]
1x CV-57C [TX & RX]
1x IR emitter cable
1x CV-57B [TX & RX]
1x IR receiver cable
2x 5V power adapter
1x 5V power adapter
1x User Manual
1x User Manual
Panel Descriptions
Front View — Transmitting Unit
HDMI-IN: Connect to a HDMI source with a HDMI M-M cable here
Mode: 0 = HDMI mode with surround sound audio output
1 = HDMI mode with stereo audio output
2 = DVI mode
3~5 = Reserved
6 = Use default EDID*
7 = Learn EDID from the display
Note for EDID (Extended Display Identification Data) learning
1. Please connect the display which you want to read EDID with a HDMI cable to the transmitter’s
HDMI-IN and turn Mode to 7 so the TX can learn the EDID information from the connected HDTV. The
LED on the RJ45-OUT of TX will dim and light again in a few seconds, which indicates the EDID learning
process is completed.
2. Turn Mode clockwise from Mode 7 to Mode 0 or Mode 1 for desirable audio setting and enjoy the
experience. DO NOT let the rotary arrow pass by Mode 6 which will erase the EDID just learned and
restore the default EDID.
Rear View — Transmitting Unit
+5V DC
+5V DC: Connect to 5V DC power supply.
RJ45-OUT: Plug in a CAT-5/5e/6 LAN cable that needs to be linked to the RJ-45 connector of the receiving unit
Front View — Receiving Unit CV-57G-RX
HDMI-OUT: Connect to a HDMI display with a HDMI M-M cable here.
EQ: Adjust the 8-level equalization control knob to the received HDMI signals. 0 – 7 = strongest – weakest. It is
recommended to switch from 7 to 0 to find the optimal visual experience.
Rear View — Receiving Unit
+5V DC
RJ45-IN: Plug in a CAT-5/5e/6 cable that needs to be linked to the RJ-45 connector of the transmitting unit
+5V DC: Connect to 5V DC power supply.
Hardware Installation
1. Connect your HDMI/DVI source (such as a Blu-ray Disc player) to the transmitting unit CV-57G-TX.
2. Connect your HDMI/DVI display (such as a LCD TV) to the receiving unit CV-57G-RX.
3. Connect your CAT-5/5e/6 LAN cable between the transmitting and receiving units.
4. Make sure your CAT-5/5e/6 LAN cable is tightly connected and not loose.
5. Plug in 5V DC power cord to the power jack of the receiving unit CV-57G-RX.
6. Plug in 5V DC power cord to the power jack of the transmitting unit CV-57G-TX.
7. If a flickering or a blinking image is seen, try to adjust the rotational switch to improve the cable skew. 0
stands for the strongest EQ while 7 stands for the weakest. Try adjusting the EQ from 7 to 0.
EDID Learning
1. Turn on CV-57G-TX.
2. Turn the Mode of CV-57G-TX counterclockwise from 0 (for surround sound) or 1 (for stereo) to 7.
3. Use a HDMI cable to connect CV-57G-TX & the display (better not connect to video source). The LED on the
RJ-45 of CV-57G-TX will dim and light again, which indicates the EDID learning process is finished.
4. Turn the Mode of CV-57G-TX clockwise from 7 to 0 (for surround sound) or 1 (for stereo). The most
important thing is don’t let the rotary arrow pass through 6 which will erase the EDID just learned and restore to
default EDID.
5. Connect CV-57G-TX and the video source through a HDMI cable and enjoy the experience.
1. If the DVI or HDMI device requires the EDID information, please use EDID Reader/Writer to retrieve and
provide DVI/HDMI EDID information.
2. All HDMI over CAT5 transmission distances are measured using Belden 1583A CAT5e 125MHz LAN cable and
ASTRODESIGN Video Signal Generator VG-859C.
3. The transmission length is largely affected by the type of LAN cables, the type of HDMI sources, and the type
of HDMI display. The testing result shows solid LAN cables (usually in bulk cable 300m or 1000ft form) can
transmit a lot longer signals than stranded LAN cables (usually in patch cord form). Shielded STP cables are
better suit than unshielded UTP cables. A solid UTP CAT5e cable shows longer transmission length than
stranded STP CAT6 cable. For long extension users, solid LAN cables are your only choice.
4. EIA/TIA-568-B termination (T568B) for LAN cables is recommended for better performance.
5. To reduce the interference among the unshielded twisted pairs of wires in LAN cable, you can use shielded
LAN cables to improve EMI problems, which is worsen in long transmission.
6. Because the quality of the LAN cables has the major effects in how long transmission distance will be made
and how good is the received display, the actual transmission length is subject to your LAN cables. For
resolution greater than 1080i or 1280x1024, a CAT6 cable is recommended.
7. If your HDMI display has multiple HDMI inputs, it is found that the first HDMI input [HDMI input #1] generally
can produce better transmission performance among all HDMI inputs.
Performance Guide for HDMI over LAN Cable Transmission
Performance rating
Unshielded (UTP)
Shielded (STP)
Unshielded (UTP)
Shielded (STP)
Type of LAN cable
Please use EIA/TIA-568-B termination (T568B) at any time
Limited Warranty
The SELLER warrants the CV-57G HDMI 1.3 over Single CAT5 Extender to be free from defects in the
material and workmanship for 1 year from the date of purchase from the SELLER or an authorized dealer. Should
this product fail to be in good working order within 1 year warranty period, The SELLER, at its option, repair or
replace the unit, provided that the unit has not been subjected to accident, disaster, abuse or any unauthorized
modifications including static discharge and power surges.
Unit that fails under conditions other than those covered will be repaired at the current price of parts and
labor in effect at the time of repair. Such repairs are warranted for 90 days from the day of reshipment to the
BUYER. If the unit is delivered by mail, customers agree to insure the unit or assume the risk of loss or damage in
transit. Under no circumstances will a unit be accepted without a return authorization number.
The warranty is in lieu of all other warranties expressed or implied, including without limitations, any other
implied warranty or fitness or merchantability for any particular purpose, all of which are expressly disclaimed.
Proof of sale may be required in order to claim warranty. Customers outside Taiwan are responsible for
shipping charges to and from the SELLER. Cables are limited to a 30 day warranty and cable must be free from
any markings, scratches, and neatly coiled.
The content of this manual has been carefully checked and is believed to be accurate. However, The SELLER
assumes no responsibility for any inaccuracies that may be contained in this manual. The SELLER will NOT be
liable for direct, indirect, incidental, special, or consequential damages resulting from any defect or omission in
this manual, even if advised of the possibility of such damages. Also, the technical information contained herein
regarding the CV-57G features and specifications is subject to change without further notice.