Supports digital video links over fiber optic cabling to
distances of 120 km or more
Overview
MRV’s digital video SFPs are the industry’s first solution designed to affordably transmit digital video component
signals over fiber using standard optical transceivers. Compatible with any optical transport system – WDM platforms,
digital cross-connects, etc. – these unidirectional digital video SFPs open a new world of cost-effective digital video
deployment options.
- Link extension over new or existing fiber plant
- Wave Division Multiplexing (CWDM and DWDM)
- Link redundancy for mission critical applications
- Video distribution/multicasting
... and more!
SDI, HD-SDI, and DVB are the basic standards employed in the transport of serial component digital video data on
single coaxial cable. Using coaxial cable between the signal source and destination limits the link range to 350 meters,
or to 140 meters for high definition. This distance is generally adequate for intra-building or small campus networks.
However, the advent of geographically dispersed studio campuses requires more and more digital video data to travel
across the sophisticated optical infrastructure of the metro and inter-metro network. Links of 100 kilometers or more
and the use of WDM technology are increasingly common. Merging digital video traffic onto these optical transport
networks is further complicated by the encoding methods for these protocols.
1
Datasheet
Digital video signaling includes a data scrambling algorithm for SDI and HD-SDI that is not easily transported over
a standard optical transport system. This algorithm can produce a signal pattern that causes an error in standard
optical systems. With a certain pattern in the video data, the scrambling algorithm can generate a pathological
signal containing a series of up to 19 bits of the same polarity.
These pathological patterns are not transportable over optical transport systems that employ “off the shelf”
optical components. These components are generally designed to use an AC-balanced signal with a duty cycle of
approximately 50%. That allows the optical transceiver to properly modulate the laser control loop (transmit side)
and lock (PLL circuitry) its receiver.
Until now, the industry has addressed this problem by providing optical components specifically designed for use
with the pathological signaling of digital video: typically DC-coupled optical transceivers. This approach requires
customized transceivers for each combination of distance, wavelength, and fiber type (multi-mode or single-mode)
used. Specialized solutions must also be built for WDM applications. Such designs are purely proprietary, and
therefore tend to be expensive. Unfortunately, DC-coupled transceivers generally have up to 8 dB lower receive
sensitivity than AC-coupled components, and they cannot be amplified in a DWDM application. This sensitivity
loss reduces link range by as much as 35 kilometers.
In contrast to the situation with digital video specialty components, the optical Multi-Source Agreement (MSA) has
led to a ready supply of inexpensive optical interfaces for most applications. However, the specific digital video
solutions cannot use this huge selection of standard and affordable optical components. The general-purpose
type of optical transport platform (multi-rate/multi-protocol transponder or repeater) simply cannot handle digital
video.
Video Extension Over Fiber
Post Production
Facility
Film Studio
Data Direction
Digital Video over Coax
(0-350 m)
SDI SFP
Digital Video over Coax
(0-350 m)
Data Direction
FO SFP
Fiber Optic SDI Link
0-120+ km
Data Direction
FO SFP
The SFP-CXASI-RX, here mounted in a Fiber
Driver EM316DMR3G-3R, receives a
unidirectional SDI signal from a connected
video device. The SDI signal is then
transmitted over fiber via a standard SFP
optical transceiver.
The optical SFP transceiver on the other
side of the fiber link receives the SDI data
signal. The EM316DMR3G-3R (Dual Multi-
rate Transponder) passes the SDI signal to
the SFP-CXASI-TX, and delivers it to the
end point video device.
2
Datasheet
HD-SDI:
The new MRV digital video SFPs offer a direct and affordable solution to the problems of digital video optical
transport. They allow the transport of SDI, HD-SDI, or DVB ASI component video signals over any optical transport
system that employs MSA standard optical transceivers.
The SFPxMRHDSDI-RXR SFP is a unidirectional multi-rate coaxial receiver designed to support digital video signals
as defined by the SDI and HD-SDI standards. It takes the digital video stream and generates a data signal that
is compatible with any standard optical transport system. The signal is passed through the system to an MSA
standard optical transceiver, and transports it over a fiber optic network.
At the end of the transmission link, the signal is received by another MSA standard transceiver and passed to the
SFPxMRHDSDI-TXR.
The SFPxMRHDSDI-TXR, in turn, processes the data signal and sends the resulting digital video stream to the
receiving digital video device.
The HDSDI products support main video systems (NTSC and PAL) currently in use. The multi-rate digital video SFP
supports either NTSC or PAL standards for standard definition and high definition.
CXDV:
The CXDV SFPs support SD digital video at 270 Mbps, but they do not support 1.5 Gbps.
CXASI:
The SFP-CXASI-xxR SFP is designed to support digital video signals that do not contain pathological patterns.
Contact your nearest authorized MRV representative and visit our website at www.mrv.com for more information
on the complete line of MRV solutions, including pricing and availability.
General Specifications
Coaxial Interface:
Input/Output Connector
Impedance
Output Level
SFP Interface
Performance:
CRC/EDH Error Rate
CRC/EDH Alarm¹
Status and Control Signals:
RX LOS
TX Disable
Temperature Range:
Operating
Storage
Power Consumption:
Agency Compliance:
¹
Not available in CXASI models
Transmitter
BNC (x1)
75 Ohms (output)
800 mV
Complies to SFP MSA standard
Receiver
BNC (x1)
75 Ohms (input)
N/A
Complies to SFP MSA standard
Better than 10
-9
Digital Diagnostics LED/SNMP trap status
Better than 10
-9
Digital Diagnostics LED/SNMP trap status
N/A
Yes
Yes
Yes
-5 to 50º C
-40 to 85º C
850 mA @ 3.3 V
-5 to 50º C
-40 to 85º C
850 mA @ 3.3 V
FCC Part 15, EMC Directive, WEEE Directive, RoHS, China RoHS, SFP MSA (as applicable)
3
Datasheet
SFPxMRHDSDI-RX serial cable input properties:
Automatic cable equalization
- up to 140 m of Belden 1694A at 1.485 Gbps and 1.485/1.001 Gbps
- up to 350 m of Belden 694 A at 270 Mbps
Tolerates > 20 dB cable loss at half clock frequency
SFP-CXASI-RX and SFP-CXDV-RX27 serial cable input properties:
Automatic cable equalization
- up to 350 m of Belden 1694 A at 270 Mbps
Tolerates > 20 dB cable loss at half clock frequency
Other
Specifications
Standards
Supported Frame &
Refresh Rates
SFP5MRHDSDI
(TX and RX)
SMPTE 259 M (270 Mbps) and
SMPTE 292 M (1.485 Gbps)
720 x 486i
720 x 576i
1280 x 720p (60hz)
1920 x 1035i (60hz)
1920 x 1080sF (24hz)
1920 x 1080p (24hz)
1920 x 1080i (50hz)
1920 x 1080p (25hz)
1920 x 1080i (60hz)
1920 x 1080p (30hz)
SFP3MRHDSDI
(TX and RX)
SMPTE 259 M (270 Mbps) and
SMPTE 292 M (1.485/1.001 Gbps)
720 x 486i
720 x 576i
1280 x 720p (59.94hz)
1920 x 1035i (59.94hz)
1920 x 1080sF (23.98hz)
1920 x 1080p (23.98hz)
1920 x 1080i (59.94hz)
1920 x 1080p (29.97hz)
SFP-CXDV
(TX and RX)
DVB ASI (270 Mbps)
720 x 486i
720 x 576i
SFP-CXASI
(TX and RX)
DVB ASI (270 Mbps)
720 x 486i
720 x 576i
The HDSDI SFPs are designed to pass SMPTE-compliant digital streams, both standard and high-definition, with no
errors. Non-compliant streams with serious TRS errors may cause momentary dropouts in the video picture.
4
Datasheet
Ordering Information (use in pairs as shown)
Output Level
(mV)
Max. Coaxial
Cable
Length (m)2
-
300 @270 Mbps
140 @1.485 Gbps
-
300 @270 Mbps
140 @1.4835 Gbps
-
350
-
350
275 @360 Mbps
200 @540 Mbps
Max. Coaxial
Cable
Length (m)2
-
Impedance
(Ohms)
75
Supported
Data Rate
Connector
BNC
Function/
Protocol
Unidirectional SDI/
HD-SDI SFP Transmitter
(PAL/SECAM)
Unidirectional SDI/
HD-SDI SFP Receiver
(PAL/SECAM)
Unidirectional SDI/
HD-SDI SFP Transmitter
(NTSC)
Unidirectional SDI/
HD-SDI SFP Receiver
(NTSC)
Unidirectional Digital
Video SDI SFP Transmitter
Unidirectional Digital
Video SDI SFP Receiver
Unidirectional DVB-ASI
SFP Transmitter
Unidirectional DVB-ASI
SFP Receiver
Model
SFP5MRHDSDI-TX
270 Mbps/1.485
Gbps
270 Mbps/1.485
Gbps
270 Mbps/
1.485/1.001 Gbps
270 Mbps/
1.485/1.001 Gbps
270 Mbps
270 Mbps
270 Mbps
270 Mbps
800
SFP5MRHDSDI-RX
BNC
75
-
SFP3MRHDSDI-TX
BNC
75
800
SFP3MRHDSDI-RX
BNC
75
-
SFP-CXDV-TX27
SFP-CXDV-RX27
SFP-CXASI-TX
SFP-CXASI-RX
BNC
BNC
BNC
BNC
75
75
75
75
800
-
800
-
AVAILABLE BY SPECIAL ORDER
Ordering Information (use in pairs as shown)
Output Level
(mV)
800
-
Impedance
(Ohms)
75
75
Supported
Data Rate
Connector
BNC
BNC
Function/
Protocol
Unidirectional Digital Video
SDI SFP Transmitter
Unidirectional Digital Video
SDI SFP Receiver
Model
SFP-3654-SDI-TX
SFP-3654-SDI-RX
360/540 Mbps
360/540 Mbps
2 Distances may vary based on properties of the transponder.
MRV has more than 50 offices throughout the world. Addresses, phone numbers and fax numbers are listed at www.mrv.com.
Please e-mail us at
sales@mrv.com
or call us for assistance.
MRV Los Angeles
20415 Nordhoff St.
Chatsworth, CA 91311
800-338-5316
818-773-0900
MRV Boston
295 Foster St.
Littleton, MA 01460
800-338-5316
978-952-4700
MRV International
Business Park Moerfelden
Waldeckerstrasse 13
64546 Moerfelden-Walldorf
Germany
Tel. (49) 6105/2070
Fax (49) 6105/207-100
All statements, technical information and recommendations related to the products herein are based upon information believed to be reliable or accurate. However, the
accuracy or completeness thereof is not guaranteed, and no responsibility is assumed for any inaccuracies. Please contact MRV Communications for more information.
MRV Communications and the MRV Communications logo are trademarks of MRV Communications, Inc. Other trademarks are the property of their respective holders.
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