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Tektronix 475A - Dm44 Digital Multimeter; Resistance; Time; Temperature

Tektronix 475A
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DM44
DIGITAL
MULTIMETER
RESISTANCE
Maximum
Safe
input
Voltage:
120
V
rms
between
+
and
COM
inputs.
Resistance
Accuracy:
200
range—within
0.25%
+1
count,
plus
probe
resistance;
2
kQ,
20
kQ,
200
kQ,
and
2
MQ
ranges—
within
0.25%
+1
count;
20
MQ
range—
within
0.3%
21
count.
Temperature
Dependence:
20
kN,
200
kQ
and
2
MO
ranges—250
ppm/°C;
200
2,
2
kN
and
20
MQ
ranges—
350
ppm/?C.
Resolution:
0.1
©.
Recycle
Time:
At
least
3
measurements/second.
Response
Time:
All
ranges
within
1
second
except
2
MQ
and
20
MQ
(within
5
seconds).
TIME
Accuracy:
+15
to
+35°C;
within
1%
of
reading
+1
count.
—15
to
+55°C;
within
1.5%
of
reading
+1
count.
66
475A/DM44
Operators
1/TIME
Accuracy:
+15
to
+35°C;
within
2%
of
reading
+1
count.
—15
to
+55°C;
within
3%
of
reading
+1
count.
TEMPERATURE
Range:
—55°C
to
+150°C
in
1
range.
Accuracy:
Original
Probe—Within
2°C,
—55°C
to
+125*C.
Within
3°C,
+125°C
to
+150°C.
Replacement
Probe:
Accuracy
will
equal
original
probe
accuracy
after
DM44
is
compensated.
Maximum
Safe
Voltage
on
Measurement
$
+100
V
(dc
+
peak
ac)
above
chassis
ground.
:
Temperature
(Storage
and
Operating):
ProbeB
dy
and
:
Cable,
-55°C
to
+105°C.
Probe
Sensor
Tip,
—
+150°C.
DC
VOLTAGE
Maximum
Safe
Input
Voltage:
+1200
V
(dc
+
peak
between
+
and
chassis.
Common
Floating
Voltage:
+500
V
(de
+
eda
a
chassis.

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