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Specification Degradation for
DM450:
DC
Voltage
AC Voltage
and
Current
DC
AC
Resistance
DM350:
DC
Voltage
AC Voltage
and
Current
DC
AC
Resistance
Temperature Co-efficients
Typical
19°C, 24°C
40°C
0°C
—
—
DM450:
DC
Ranges
AC
Ranges
Resistance
DM350:
DC
Ranges
AC
Ranges
Resistance
Rate:
second
Reading
3 per
digit 0.3" (8mm)
Display:
or
4%
3%
5.8"x1.6"
Dimensions:
10"
x
Weight:
lbs
(6709)
1%
Sockets:
Standard
4mm for resilient plugs,
spacing
Fuse:
20mm or 1"/1
or plastic body
Power:
Four
x
1%V
Rechargeable
adaptor
10
Year
1
l'0.05%
+0.15%
+02%
+0.05%
+0.1%
0.2%
7+
+0.25%
+0.1%
0.01 %/°C
0.04%/°C
0.01%/°C
0.02%/°C
0.05%/°C
0.02%/°C
LEDs
(255
148
40mm)
x
x
(19mm)
%"
2A 250V fast blow ceramic
%"
cells
Sinclair
disposable
or
Battery Pack or approved
AC
Calibration
Calibration
guaranteed
is
as
re-calibration service as do most of
Sinclair Radionics provide
a
their agents
overseas.
owner wishes
Where an
to carry
done
sources whose
may be
providing
are available. Invert
sufficient
accuracy
the
rubber feet and remove
six
then
the case
lower
Removing
follows:
as
Select
2V DC
200mV
DC
20V
DC
AC
2V
1V
20V AC
200V AC
10A
DC
No
other adjustments
are provided, and
into calibration by adjusting
brought
should be made.
attempts
Maintenance
Sinclair Radionics, or their
agents
fault. Where
any meter developing
a
maintenance
work, this should only be
their own
the
Manual which may be
junction
with
Service
directly from Sinclair Radionics or their
the technical
in
specification.
out
his own re-calibration,
values are known to a
the
instrument, remove
recessed
and
surface
one
screw.
the
PCB. Proceed
access
to
gives
Input
Adjust
Approx.
+1.9V
RV4
+0.19V
RV3
+19V
(iffitted)
RV1
50/60Hz
RV5
rms
rms12KHz
10V
C3
100V rms 12KHz
C8
RV2
7
amps
range cannot
if
every
these
presets, no further
repairfor
will
provide
overseas,
undertake
owners
wish to
done
in
con-
purchased
agents
overseas.
this
the
be
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