SHDFRM2
OPERATION
SHDFRM2
Version 1 Issue 1
180203
4
Scope of this Operation Manual
This is the operation manual for the System HD Fibre Optic Receiver module. It covers the modules ordered
under the following codes:
SHDFRM2WWR4
– Standard Dual Input Receiver with 4 electrical outputs from each
SHDFRM2WWRA – Single WDM Receiver gives 2 channels each with 4 electrical outputs
SHDFRM2WWRB – Single WDM Receiver gives 2 channels each with 4 electrical outputs
SHDFRM2WWR4 Dual 4-Output Receiver, Rear Panel View
SHDFRM2WWRA and SHDFRM2WWRB WDM Receivers, Rear Panel View
MODULE DESCRIPTION
The Dual Channel Optical Receiver receives two
independent optical serial digital bitstreams. Each
channel can receive either a single optical high-
definition serial digital (HD-SDI / SMPTE 292M) or
a single optical standard-definition serial digital
(SD-SDI / SMPTE 259M) bitstream and provides
four identical electrical HDSDI or SDSDI outputs
from each channel.
The inputs are via the SMPTE 292M
recommended SC/PC singlemode fibre optic
connectors situated on a rear panel interface
board. The SC/PC connector is robust and easy to
use, a simple snap-fit into the backplane uniter
enables a reliable connection to be made in a
matter of seconds. The electrical outputs are via
eight 75
Ω
=
BNC connectors.
Each SDI input signal is fed from the interface
board into an optical receiver on the main board
which converts the optical signal back into the
electrical domain. This electrical SDI signal output
is then amplified and reclocked before being split to
provide four identical coaxial SDI outputs for the
user on the backpanel of the interface board.
(Note: In Async mode the signal is only amplified.)
When used in conjunction with the Optical
Transmitter boards (and depending on the fibre
interconnect used) the sensitivity of the optical
receiver is sufficient to recover a signal transmitted
from up to 20km away.
LEDs mounted at the front of the main board allow
monitoring of the receiver performance. More
detailed performance information can be obtained
via the RollCall interface.
Two rear panel interface board options can be
used in conjunction with the dual channel receiver
main board. A ‘standard’ board accepting two
optical signals in the wavelength range 1200-
1600nm and a ‘WDM filter’ option. The WDM
interface board incorporates an inline optical filter
which will allow two wavelengths (1310/1550nm)
combined on a single fibre to be received. The
WDM filter splits the two input carriers and routes
the 1310nm signal to one receiver and the 1550nm
signal to the other receiver.
WARNING…
THE FRONT PANEL OF THE UNIT MUST NOT
BE OPENED BY THE OPERATOR. ACCESS IS
ONLY PERMITTED TO FULLY QUALIFIED
INSTALLATION ENGINEERS.
