Fluke 893A - SECTION I INTRODUCTION AND SPECIFICATIONS; 1-1. INTRODUCTION; 1-5. ELECTRICAL SPECIFICATIONS

1-1.
INTRODUCTION
1-2.
The Fluke Model 893A and AR AC-DC
Differ-
ential Voltmeters provide conventional or
differential
measurements
of ac voltages from one millivolt
to 1100
volts ac and dc voltages from
10
microvolts
to 1100 volts
dc. Conventional (TVM)
measurements are made with
an accuracy of
±3%
of the
selected range to initially
determine
the magnitude of the measured
voltage. The
differential
(NULL) mode is then used with an
improved
accuracy
of up to
250%
over that
of
the conventional
mode to determine the
exact value of the measured volt-
age. One linear meter-scale
greatly simplifies
all
measurements made with the instrument. Whenever the
instrument
is operated on the differential mode,
an
in-
line
digital readout representing the
magnitude of
the
measured voltage is available
from
the
front panel Read-
out dials.
1-3.
Two versions
of the instrument are available and
are identified
as the Model 893A or Model 893AR.
The
Model 893A is a portable unit, half-rack in width, with
a tilt-down carrying handle. This handle detents into
the instrument's feet to
serve as a tilt-bale during
bench-top use of the instrument. The
Model 893AR is
also a portable unit, but is
of proper
width
for instal-
lation in a standard electronic
equipment rack. Car-
rying of this instrument
is provided by two front panel
handles,
A
tilt-down
bale located on the bottom of the
instrument
facilitates bench-top use of the instrument,
1-4.
A rechargeable battery
and recorder output op-
tions are also available
for
either
version of
the
instru-
ment. These
options can be installed at the factory,
upon request, or in the field. Option Kit
893A-7001
comprises the rechargeable
battery pack and, when in-
stalled in the instrument, is identified
as
the
-01
option
on the rear panel decal. Option Kit
893A-7002 com-
prises the recorder
output and, when, installed
in the
instrument,
is identified as the
-02
option on the rear
panel decal.
1-5.
ELECTRICAL
SPECIFICATIONS
1-6.
DIFFERENTIAL
VOLTMETER
DC ACCURACY
,
£3
'z-
y
±{0. 01%
of input +0.
001%
of range +10
uv) from
0 to 1100
volts
dc at 23®C ±2“C
with up to
80%
relative
humidity.
±(0.
02%
of input
+0.
001%
of range +10
uv) from
0 to 1100
volts dc at
10“C to
40“C (50*F to
104“F) with up
to
70%
relative humidity.
AC ACCURACY
O > tf-
At
23°C ±2'’C with less
than
70%
relative
humidity:
50 Hz to lO kHz
0.
001 to 500 volts
ac
±(0.
05%
of input +25
uv)
500 to 1100 volts
ac
±0.
1%
of input
At 10°C to
40°C with less than
5
Hz to 10 Hz
0. 001 to 1100
volts ac
10 Hz to 20 Hz
0.
001
to
1100 volts
ac
20 Hz to 50 Hz
0. 001 to
1100 volts ac
50
Hz to 20 kHz
0. 001 to 110 volts
ac
110 to 1100
volts ac
20
kHz to 50 kHz
0.001 to
110 volts
70% relative humidity:
±{l% of input
+250 uv)
±(0.
5%
of
input +100
uv)
±(0.
15%
of input
+25 uv)
±{0.
1%
of input +25
uv)
±0.
15%
of input
±(0.
15%
of input
+25 uv)
1-1
8 9,3 A