An SDI extender can be used to transmit SDI, HD-SDI, and 3G SDI over distances as much as 10 kilometers. It uses standard, single-mode fiber optic cable with LC connectors. https://www.sdimatrixswitcher.com/categories/sdi-options/sdi-extenders.html

1. Understanding Electrical Interface, Bit Rates,
and Alternative Interfaces of SDI

2.  Various digital interface standards make use of one or several coaxial
cables with BNC connectors having a nominal impedance of 75
ohms. This type of cable is used in analog video setups that allow
easier upgrading. For long transfer, high-quality cables are used that
also offer higher bitrates. The specified signal amplitude at the
source is 800 mV (±10%) peak-to-peak. Moreover, lower voltages
can be measured at the receiver due to attenuation. By means of
using equalization at the receiver, it is feasible to transmit 270 Mbit/s
SDI over a range of 300 meters without requiring repeaters. When
the interface is converted to fiber and transmit single fibers, the
maximum distance of 80 kilometers can be achieved. However, for
shorter distances, SDI over fiber is preferred.
Understanding Electrical Interface, Bit Rates, and
Alternative Interfaces of SDI
Electrical Interface

3.  There are the various bit rates used in different SDI extension networks:
Standard Definition – As defined by SMPTE 259M, the feasible bit rates
are 143 Mbit/s, 177 Mbit/s, 270 Mbit/s, and 360 Mbit/s. Out of these
four bit rates, 270 Mbit/s is the one typically used. While 360 Mbit/s is
used for providing a widescreen standard definition, 143 Mbit/s and 177
Mbit/s are obsolete bitrates used for transmitting composite-encoded
video, i.e. NTSC and PAL. Enhanced Definition – Used rarely, several 540
Mbit/s interfaces are defined for enhanced designation applications. It
also supports an interface standard for a dual-link 270 Mbit/s interface.
HDTV – The serial digital interface is defined by SMPTE 292M. In
addition to these, SMPTE 372M standard and SMPTE 424M standard
provides very-high definition applications and nominal 3 Gbit/s interface
respectively.
Understanding Electrical Interface, Bit Rates, and
Alternative Interfaces of SDI
Bit Rates

4.  SMPTE 297-2006 is an optical fiber system for transmitting bit-
serial digital signals. It is capable of providing a number of SMPTE
signals, including SMPTE ST 259, SMPTE ST 344, SMPTE ST 292,
and SMPTE ST 424. In addition to optical specification, ST 297
mandates laser safety testing and all optical interfaces are labeled
to indicate safety compliance, interoperability, and application.
ITU-R Rec. 601 is an 8-bit parallel digital interface, though mostly
obsolete. An SDI extender can be used to transmit SDI, HD-SDI,
and 3G SDI over distances as much as 10 kilometers. It uses
standard, single-mode fiber optic cable with LC connectors.
Understanding Electrical Interface, Bit Rates, and
Alternative Interfaces of SDI
Other Interfaces

5. SDI Matrix Switcher
Understanding Electrical Interface, Bit Rates, and
Alternative Interfaces of SDI
3835-R Thousand Oaks Blvd Unit 295,
Westlake Village, CA, 91362, USA
Mobile: 8059081314
Phone: 8339653722
Email: support@sdimatrixswitcher.com
Website : www.sdimatrixswitcher.com