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BRUEL & KJAER 4915 - Normal Single and Repetitive Flash Operation; Single Photo Flash Operation; Triggering

BRUEL & KJAER 4915
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For
use
of
other
types
of
fibre-optic
cable
a Blank
Coupler
DB 2484 is
provided.
This has
the
dimensions
shown in Fig.4.3 and
when
drilled
with
appropriate
sized
centre
hole can
accommodate
cables
between 4,5 and 17,5
mm
in
diameter.
For
optimal
light
output
it
is
important
that
the
input
face
of
the
cable
protrudes
23
mm
from
the
rear
of
the
Coupler.
See Fig. 4.3.
Input
face
of
fibre -
optic
cable
X
--
--~
~
19
23
Centre hole
to
be
bored
to
accept
fibre
optic
cable
with
diameter between
4,5 and 17,5
mm
820644
Fig. 4.3.
Dimensions
(in
mm)
of
the
Blank
Coupler
DB
2484
for
correct
fitting
and
alignment
of
Fibre-Optic
Cables
To
prevent
damage
to
Fibre-optic
Cables,
avoid
bending
or
twisting
them
sharply.
Also
take
care
not
to
scrape
their
input
or
output
face
against
metal
objects
and
for
unplug-
ging
them
from
the 4915 always
grip
them
by
their
metal
sheath.
For
cleaning
cables,
lightly
rub
their
input
and
output
face
with
the end
of
a
double
ended
cotton
swab
(ie.,
ear
cleaning
aid)
which
has been
moistened
in
water
containing
a
few
drops
of
mild
soap
solution.
On no
account
use
detergents
or
other
strong
cleaning
agents.
4.2. NORMAL SINGLE AND REPETITIVE FLASH OPERATION
For
normal
single and
repetitive
flash use
of
the 4915,
operation
is
similar
to
that
described
in
Chapter
3
except
that
the 4915 is
employed
together
with
the 4913 in
place
of
the
Lamp
Unit US 0008.
Connection
of
the
two
instruments
is as
shown
in Fig. 4.1. No
attention
need be
paid
to
the READY LED, INPUT
socket
or
MAN.
button
on the
front
of
the
4915, as these are
for
single flash
"Photo"
operation
only. See
section
4.3.
4.3. SINGLE
"PHOTO"
FLASH OPERATION
4.3.1. Triggering
24
Activation
of
single
"Photo"
flash
depends
on the
particular
signal
source
employed
for
triggering
the 4913. With the 4913
connected
to
the 4915 as in Fig.
4.1
and
its
"Int.
Gen.",
"Ext."
or
"Line"
TRIGGER SOURCE
mode
chosen
for
normal
repetitive
flash
operation,
"Photo"
flash
may
be
activated
simply
by
pressing
the
MAN.
button
on the 4915 when
the
READY
LED
is lit.
Alternatively,
remote
activation
is
possible
via
the
flash
contact
of
a
camera
when
this
is coupled
to
the INPUT
socket
on the
front
of
the
4915 using
the
Flash
Contact
Cable
AQ 0375
provided
with
the 4913.

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