Gomax CV-915 User manual

VGA and Audio to HDMI Converter
User Manual
rev: 131106
Made in Taiwan
C
CV V- -9 91 15 5
The CV-915 VGA and Audio to HDMI Converter has been tested for conformance to safety
regulations and requirements, and has been certified for international use. However, like all
electronic equipments, the CV-915 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 cleaning.
Warning!
This device is served purely for conversion between video formats.
This device CANNOT convert the input/output video resolutions.

1
INTRODUCTION
The CV-915 VGA and Audio to HDMI Converter offers an easy and instant approach for converting
analog PC video (VGA) with either digital audio (S/PDIF) or analog stereo audio to digital HDMI. With this
module, VGA based devices such as PC with S/PDIF or analog stereo audio can readily connect to your
HDMI TV. With such a convenience, presentations, demonstrations, or digital signage become easier and
more cost effective.
FEATURES
●PC video supports up to UXGA (1600x1200) or WUXGA (1920x1200)
●Supports most popular VESA resolutions from 640x480 up to WUXGA
●Front panel LED indicators
●Easy installation
PACKAGE CONTENTS
●1x CV-915
●1x DC 5V 2A wall wart
●1x User Manual
2
SPECIFICATIONS
Model Name
CV-915
Technical
Converter
HDMI compliance
HDMI
Video bandwidth
Single-link 165MHz [4.95Gbps]
Video support
Up to single link: 1080p@60, WUXGA [1920x1200@60Hz], UXGA
Audio support
Stereo audio
Input TMDS signal
1.2 Volts [peak-to-peak]
Input DDC signal
5 Volts [peak-to-peak, TTL]
PCB stack-up
4-layer board [impedance control —differential 100Ω; single 50Ω]
Input
1x VGA
1x RCA
1x 3.5mm
Output
1x HDMI
HDMI connector
Type A [19-pin female]
VGA connector
HD-15 [15-pin D-sub female]
RCA connector
Coaxial S/PDIF digital audio [PCM 48kHz]
3.5mm connector
Analog stereo audio
Control Switch
2-pin DIP switch
Mechanical
Housing
Metal enclosure
Dimensions
[L x W x H]
Model
125 x 93 x 27mm [5" x 3.7" x 1.0"]
Package
270 x 175 x 80mm [10.6" x 6.9" x 3.1"]
Carton
450 x 370 x 300mm [1'6" x 1'3" x 11.8"]
Weight
Model
352g [12.4 oz]
Package
705g [1.6 lbs]
Power supply
5V 2A DC
Power consumption
3.5 Watts [max]
Operation temperature
0~40°C [32~104°F]
Storage temperature
-20~60°C [-4~140°F]
Relative humidity
20~90% RH [no condensation]

3
PANEL DESCRIPTIONS
Front Panel
Rear Panel
1. SPDIF In
2. STEREO IN
3. VGA IN
4. Mode Switch
5. STATUS LED
6. HDMI OUT
7. POWER LED
8. +5V DC
CONNECTION DIAGRAM
4
RESOLUTION SUPPORT
PC video (VGA)
640 x 480 @60Hz
800 x 600 @85Hz
1280 x 768 @75Hz
1400 x 1050 @60Hz
640 x 480 @72Hz
1024 x 768 @60Hz
1280 x 768 @85Hz
1400 x 1050 @75Hz
640 x 480 @75Hz
1024 x 768 @70Hz
1280 x 800 @60Hz
1440 x 900 @60Hz
640 x 480 @85Hz
1024 x 768 @75Hz
1280 x 960 @60Hz
1440 x 900 @75Hz
720 x 480 @60Hz
1024 x 768 @85Hz
1280 x 960 @85Hz
1600 x 1200 @60Hz
720 x 576 @50Hz
1152 x 864 @75Hz
1280 x 1024 @60Hz
1680 x 1050 @60Hz
800 x 600 @60Hz
1280 x 720 @50Hz
1280 x 1024 @75Hz
1920 x 1080 @50Hz
800 x 600 @72Hz
1280 x 720 @60Hz
1280 x 1024 @85Hz
1920 x 1080 @60Hz
800 x 600 @75Hz
1280 x 768 @60Hz
1360 x 768 @60Hz
1920 x 1200 @60Hz
DIP SWITCH
Mode
1: OFF-[]
Reset to default factory EDID
1: ON-[]
Learn & store connected monitor’s EDID
2: OFF-[]
Analog audio input
2: ON-[]
S/PDIF audio input
EDID LEARNING
1. Power up the CV-915. Connect display to HDMI Output.
2. To learn EDID from HDMI display, pull down the DIP switch 1 to ON [], the green light will be dark
and bright to indicate the EDID learning process is complete. You DON’T NEED to pull up the DIP
switch again unless you want to learn another EDID by pulling DIP switch 1 up and down.

5
HARDWARE INSTALLATION
1. Connect VGA source to the video input with a VGA cable.
2. Connect S/PDIF or stereo audio source to RCA jack or 3.5mm earphone jack respectively.
3. Connect HDMI display to the HDMI output connector with a HDMI cable
4. Power up the CV-915.
NOTICE
1. Only HDMI enabled TV sets with underscan/overscan* support, the full active video can be accurately
displayed. Some HDMI equipped TV sets may not support this feature. If underscan/overscan* is NOT
supported, the top, bottom, left and right border of the active video may be screened, and the S/PDIF
audio may not sound right.
2. Analog stereo audio can merely support 2-channel audio. This version does NOT support 8-channel
analog audio applications.
3. S/PDIF audio input supports the main 2-channel audio input
4. S/PDIF supports only 48kHz audio sample rate. Other than this rate, the input digital audio should be
adjusted to 48kHz in order to get audio signal correctly sent.
* The underscan mode displays the full video frame, which reveals content on the edge
that is recorded. In overscan, the field monitor zooms in to the area that would be
visible on most televisions. Set the field monitor to underscan if your video will be
viewed on a computer monitor or shown with a projector and also to look for light
stands, microphones, and other unwanted objects on the edges of your shot. Set it to
overscan to see how the video will look on a television.
6
WARRANTY
The SELLER warrants the CV-915 VGA and Audio to HDMI Converter 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 surge. This warranty is
offered by the SELLER for its BUYER with direct transaction only. This warranty is void if the warranty
seal on the metal housing is broken.
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 and power adapters are limited to a 30 day
warranty and 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-915 features and specifications is subject to
change without further notice.