EHA-SRX
HD-SDI to HDMI Converter
User’s Manual
Copyright © EverFocus Electronics Corp,
Release: Mar. 2011
EHA-SRX
1. INTRODUCTION
The EHA-SRX accepts the HD-CCTV digital video signal from an HD-SDI compliant HD-CCTV
camera, and coverts the signal for presentation on the HDMI input of an HD TV or monitor. The
converter supports HD-SDI video signals compliant with the SMPTE 292M, 296M standards, at
data rates up to 1.485Gb/s. With integrated cable equalizer technology, the EHA-SRX is
capable of receiving HD-SDI digital video at up to 1920 x 1080 resolution over 75Ω coaxial
cable. This provides a complete solution for the transmission and display of both interlaced and
progressive scan HD-SDI digital video from coaxial cable-based HD-CCTV cameras.
2. FEATURES
Accepts HD-CCTV high-definition HD-SDI digital video at 720p/60, 1080i/60 and
1080p/30 formats/ frame rates
Processes HD-SDI standard SMPTE292M, 296M at 1.485Gb/s data rate
Provides standard HDMI output for HD TV monitor display
Integrated cable equalizer for long distance video transmission without loss of quality
Capable of receiving HD-CCTV digital video over 75Ω coaxial cable at distances over
100M (depending on cable type)
High quality digital video and audio transmission with near zero latency
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EHA-SRX
3. SPECIFICATIONS
Model Name
Technical
EHA-SRX HD-SDI to HDMI Converter
SDI Standards
Video Bandwidth
HD-SDI
1.485Gbps
Video Support
720p @50/59.94/60Hz, 1080i @50/59.94/60Hz, 1080p @25/30Hz
Input Signal
HD-SDI: SMPTE 292M, 296M
Output Signal
Input Connector
HDMI /HD-SDI
1x BNC [HD-SDI] 3G 75Ω inter-locked socket
1x HDMI Type A [19-pin female] ; 1x BNC [HD-SDI] 3G 75Ω
inter-locked socket
Output Connector
Mechanical
Housing
Metal case
Dimensions
Weight
77 (W) x 38 (H) x 117 (D) mm / 3” (W) x 1.5” (H) x 4.6” (D)
200g / 0.45lbs
12VDC
Power Supply
Power Consumption
2 W max.
Operation Temperature 0~50°C / 32~122°F
Relative Humidity (20%~80% Humidity)
4. PACKAGE CONTENTS
- HD-SDI to HDMI Converter (x1)
- Accessory packet (x1)
- Power adaptor (x1)
- Printed Installation Guide (x1)
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EHA-SRX
5. FRONT PANEL
1
2
4
3
1. Power LED indicator
2. Link LED indicator
3. Power 12VDC
4. HD-SDI Input
6. REAR PANEL
5
6
5. HDMI Output
6. HD-SDI Output
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EHA-SRX
7. CABLE REQUIREMENTS FOR BNC CONNECTOR
7.1 Cable Types
The EHA-SRX allows a total signal attenuation of up to 43.5 dB along the cable between
devices. The actual maximum cable length depends on the attenuation characteristic of the
particular cable used. Generally speaking, the better the cable quality, the lower the signal
attenuation, thus the longer the distance the HD-CCTV video signal can be carried.
The following table gives examples of different cable types, losses and the distances that can
be achieved. These are only examples and the actual distance is determined by the attenuation
characteristic of the cable in your application.
The table below gives an orientation for achievable cable distances:
Cable Type
Attenuation in dB at 1
GHz per 100 m / 328 ft
Max. Cable distance in
m
ft
RG-59
24 ~ 40 *
15 ~ 35 *
8 ~ 16 *
70 ~ 160
230~520
330~620
590~<820
RG-6
RG-11, CATV-lowloss
cables
100 ~ 190
180 ~< 250
* Low quality cable may have higher attenuation
7.2 Cable Installation
Please make sure, that the coaxial cable is not squeezed at any position.
Also the max. bending radius defined by the cable manufacturer should be considered.
General rule: maximum bending radius = 10 x outer cable diameter
Bending creates pressure on the center conductor, causing it to move through the dielectric
toward the inside of the bend. This affects impedance and return loss and reduces the
maximum possible cable length.
Please try to avoid any BNC - adapter or any connectors in the BNC cable.
Looping HD-SDI signals by BNC T-connectors to other devices is not possible.
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EHA-SRX
7.3 BNC-plug
Also the BNC - plug plays an important role for clear HD-CCTV signal transmission.
Standard BNC plugs for CCTV have a quite high attenuation and may cause return losses due
to reflection effects.
We recommend using of HD-Video approved BNC plugs.
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EHA-SRX
EverFocus Electronics Corp.
EverFocus Taiwan:
EverFocus Europe - Germany:
12F, No.79, Sec. 1, Shin-Tai Wu Road,
Hsi-Chih, Taipei, Taiwan
TEL: +886 2 2698 2334
Albert-Einstein-Strasse 1, D-46446
Emmerich, Germany
TEL: +49 2822 93940
FAX: +49 2822 939495
FAX: +886 2 2698 2380
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Room 609, Technology Trade Building,
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Haidian District, Beijing 100085, China
TEL: +86 10 6297 3336~39
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518101, China
TEL: +86 755 2765 1313
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FAX: +86 755 2765 0337
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1801 Highland Avenue, Unit A, Duarte, CA 91010, USA 415 Oser Avenue, Unit S, Hauppauge, NY 11788, USA
TEL: +1 626 844 8888
FAX: +1 626 844 8838
TEL: +1 631 436 5070
FAX: +1 631 436 5027
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5F, Kinshicho City Building, 2-13-4
Koto-Bashi,Sumida-Ku, Tokyo, 130-0022, Japan
TEL: +81 3 5625 8188
Unit 12, Spitfire Business Park, Hawker Road,
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TEL: +44 20 8649 9757 / +44 845 430 9999
FAX: +44 20 8649 9907
FAX: +81 3 5625 8189
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Suite 803, Housefin Bhavan, C-21, Bandra Kurla
Complex, Bandra (East), Mumbai 400051, India
TEL: +91 22 6128 8700
FAX: +91 22 6128 8705
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