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4.
Please note t h a t this unit O V E R L E V E L
lights when the input exceeds 15dB above the
fullscale reading f o r
w a r n against d i s t o r t i o n due to highly
signal levels.
It also normally
switching
between the 300V and 1V or
the 300/iV and 1mV ranges, but t h i s
and not
an indication
5.
The dynamic range of
making
it
impossible to
weighing
f i l t e r ' s
frequency response while they are
installed
in the
unit.
6.
A signal or D C voltage should never be placed
between the instrument
7.
When this instrument
the A C line has pulse noise of a level
than the interna]
f i l t e r can handle,
may be affected.
Ooitsideration
to providing a clean power source in such a
s i t u a t i o n .
8.
Temperature coefficient
1 0 A < V ~ 3 0 0 J « V ranges.
L E D
use w i t h weighting
f i l t e r s
excessive
lights
when
between
is normal
of excessive signal level.
the units
is 4 0 ~ 8 0 d B
measure the
internal
case and
ground.
is used in a location
where
higher
performance
sttould be given
is 0.1%/°C T Y P . w i t h
7.
MAINTENANCE
to
Removing the C A S E
Using a screwdriver, remove the t w o screw each on
the left side, right side and top of
Open the bottom of
remove the cover.
Removal of
the four screws retaining
w i l l expose the shield.
Replacing the fuse (see Figure 4)
R E P L A C I N G
F U S E
When a fuse goes out, the device is no longer operable.
If gone out, check f o r a trouble cause, remedy it, remove
the cap of the fuse holder on the rear panel using a
screw driver and take it
a new one.
When replacing fuse, be sure to check the capacity of a
new fuse for a specified value as f o l l o w s :
100V, 120V
A C
A C 2 2 0 V , 240V : 0.3A
- 1 2 -
;
•
the
instrument.
the receptacle shaped case
the bottom cover
out and replace the fuse w i t h
: 0 . 5 A
to
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