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BRUEL & KJAER 4915 - Connection of Mains Supply

BRUEL & KJAER 4915
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I
Regarding
use
of
the
Lamp
Unit
US 0008
with
the 4913,
this
may
be held
by
hand
or
mounted
on a
tripod
or
similar
support.
A
3/8"
UNC
camera
tripod
mounting
thread
is
provided
in
the
base
of
the
lamp's
hand-grip.
The
Lamp
Unit
provides
a
narrow
concen-
trated
light
beam
and
may
be used
at
a
distance
of
up
to
3
metres
away
from
the
subject
even in
fairly
bright
ambient
lighting
conditions.
The
typical
light
output
characteristics
of
the
lamp
as a
function
of
lamp
-
subject
distance
and angle
of
incidence
from
optical
centre
are
indicated
in Table
3.1
and Fig 3.2
respectively.
Lamp - Subject
0,
125
0,25
0,5
0,75
1,0
m
Distance
Average Flash
25
17 7
4 2
klux
illuminance
811148
Table
3.
1.
Average
flash
illuminance
of
US 0008
as
a
function
of
lamp
-
subject
distance
at
flash
rates
greater
than 50 Hz
Average Flash
illuminance
k lux 8
-
10
0 _ go
- 60
_ 40
- 20
+20
+40
+60
+8° +10°
Angle
of
Incidence
from
Optical
Cent
re
8 114
37
Fig. 3.2.
Average
flash
illuminance
of
US 0008 as
function
of
angle
of
incidence
from
optical
centre
with
lamp
-
subject
distance
of
0,5m
Optional
types
of
mounting
for
use
with
the 4913
are
the
Carrying
Case
KA
2004
for
protection
of
the
instrument
during
transport
and the Metal
Frame
KK 0014
for
mounting
it
in a
standard
19 inch
instrumentation
rack.
Both
can
accommodate
two
modular
instruments
the same size as the 4913, however,
for
installation
in the Metal
Frame
the
four
feet
of
the 4913
must
first
be unscrewed. For
further
information
on
rack
mounting
of
B & K
instruments,
the B & K
Short
Form
Catalogue
should be consulted.
3.1.3. Connection of Mains Supply
\
Before
connecting
a
mains
supply, the follow[ng
mains
voltage
setting
and
fuse
checks
should be
carried
out
to
ensure safe
operation
of
the
instrument.
10

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