Calrec ARGO, Installation & Technical Manual

Page: 47 / 92

47
SFP - OVERVIEW
The connections between control
surface and processing core, as
well as all IP network connections,
connections between I/O boxes
and routers, and router to router
connections between different
cores, are made via SFP modules
(Small Form-factor Pluggable Gigabit
Interface Converters).
SFPs can be provided for RJ45 copper
connections, as well as for singlemode or
multimode fibre on duplex LC connectors.
This allows for each port’s connection
type to be chosen depending on the
distance of the run or to match the
infrastructure present. SFPs can easily
be changed on a port by port basis as and
when required.
The correct quantity of SFPs are supplied
pre-fitted. The type of each connection
- copper, singlemode fibre or multimode
fibre, should be specified at the time of
order to ensure the correct SFP types
are supplied. Additional SFP modules
can be ordered if required. If a system
is to be connected to an existing IP
network, please discuss this with your
Calrec project leader, sales person or
local distributor to ensure that SFPs are
provided and ports provisioned for the
additional router to router connections.
SFP MODULES
ROUTER CARD SFP ORIENTATION
FIXED FORMAT I/O BOX SFP
• Router card shown with copper
SFPs fitted in ports 1-2,
singlemode fibre (button release)
in ports 3-4.
• I/O box shown with singlemode
fibre SFPs (button release) fitted.
• Both SFP types above have
a handle latching mechanism,
shown in the locked position.
The unit on the left is a
singlemode duplex LC fibre
module. The unit on the right is a
copper RJ45 module.
MODULAR I/O BOX SFP
• Modular I/O controller card SFPs
are all orientated the same way
around (Button release singlemode
fibre SFPs shown).
SFP slot orientation
SFP modules plug into front panel slots
on router and modular I/O controller
cards, and rear panel slots on fixed format
I/O boxes. The modules can be fitted or
removed whilst the system is powered and
without removing or opening any card or
box cases.
Note: the orientation of the SFP modules,
as shown in the illustrations on this
page - modules fitted in even numbered
router ports (left hand column) are fitted
the opposite way around to those in the
odd numbered router ports (right hand
column). Likewise for fixed format I/O
boxes, the primary SFP module is the
opposite way around to the secondary
SFP module. The modules are orientated
so that the release catch for the RJ45 /
LC connector plugs once inserted are on
the outside edge.
For modular I/O box controller cards,
both SFP slots are orientated so that
the release catch on the cable / fibre
connector are on the right-hand side.
SFP latching and extraction
Calrec source SFP modules from various
manufacturers. All types used conform
to the same specification, however the
latching mechanism on them can vary
slightly.
The standard copper SFPs and some
fibre SFPs as shown in the photograph on
the previous page have latch / extraction
handles. On insertion, the handles should
be set against the outer edge (the same
side as the release catch on the RJ45 /
LC connector plug that fits into the SFP)
to lock it into place and prevent accidental
removal if cables are pulled.
To remove this style of SFP, remove the
cable / fibre and slide the handle (copper)
or lift the handle out (fibre) to the inside
edge position as shown in the diagram
below. The module can then be removed
by pulling on the handle.
Other SFPs automatically latch into place
when they are inserted fully and have
a release button on their inside edge.