Installation
Instructions
1)
Locate
the
FOI
to
the
PSQ
as
shown;
the
power
plug
slides
straight
into
the
mating
receptacle.
2)
Start
the
captive
screws
into
the
FOI
face.
Do
not
tighten
completely
until
both
are
threaded.
3)
Tighten
snugly
the
captive
screws,
evenly,
drawing
the
faces
together.
The
mounting
face
of
the
FOI
should
be
in
uniform
contact
with
the
face
of
the
PSQ.
Note:
The
PSQ
‐
4909
is
shown.
The
PSQ
‐
2920,
PSQ
‐
3920
and
PSQ
‐
4920
Low
Voltage
power
supplies
do
not
have
the
AC
adapter
cable.
Compatibility
The
PSQ
series
power
supplies
are
compatible
with
all
FOI
and
FIS
style
Fiber
Optic
Isolators.
The
table
below
shows
compatibility.
See
the
specifications
section
in
the
user
manual
of
your
FOI
to
determine
the
Size
of
the
FOI.
FiberPlex
FOI
Series*
Size
AC
Power
Supply
Low
Voltage
Power
Supply
FOI
‐
2xxx
Size
2
PSQ
‐
2909
PSQ
‐
2920
FOI
‐
3xxx,
TDU
‐
4000
Size
3
PSQ
‐
3909
PSQ
‐
3920
FOI
‐
4xxx
thru
FOI
‐
9xxx
Size
4
PSQ
‐
4909
PSQ
‐
4920
*
Includes
both
FOI
and
FIS
variants
Figure
1
PSQ
Installation
