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Table
3,
Reference
Sources
NOMENCLATURE
MINIMUM USE
SPECIFICATIONS
RECOMMENDED
EQUIPMENT
DC
Voltage
DC
Source
High Short-Term
Stability (0-1
100V)
Fluke
Model 335A
Null
Detector
10
yvV
Full-Scale
Resolution
Fluke
Model 335A
Kelvin-Variey Divider
Linearity
±1
ppm
of
Input
Fluke
Model 750A
Standard
Cell
Enclosure
Guildline
91
Guildline
9152(B)
AC
Voltage (8505A)
AC
Calibration
System
0-1000V
ac
Accuracy:
1
kHz:
.02%
10 kHz:
.02%
50 kHz:
.05%
100 kHz-1
MHz:
.33%
Fluke
Model 5200A
with
Fluke
Model
5215A
or
5205
(refer to
S
ection
4
for
8506A
specifications, setup)
Ohms
Standard
Resistors
20
ohm:
30
ppm
200
ohm
-
20
Mohm:
50
ppm
200
Mohm:
100
ppm
ESI
SR-1010
ESI
SR-1050
DC
Current
DC
Current
Calibrator
Accuracy
±.02%
Fluke
Model 382A
200
kohm
Resistor
Accuracy
±.01%
AC
Current
AC
Current
Calibrator
Verification
Dependent
Fluke
Model 5100
b.
Ohms
Selector: In
(4T)
for
Ohms
Zero and
Ohms
gain corrections
(8505A
and 8506A) and
for
VAC
corrections
(8506
A
only).
The Guard
Selector
can be
in
or out
for
other
calibration
connections
at
the front
panel
terminals.
c.
Rear
Input
Selector: out.
2.
When
the rear input
connector
is
being used, the
Guard
Selector
and
the
Ohms
Selector
have
no
affect.
The
Rear
Input Selector
must
be
pushed
in.
Rear
inputs are
dedicated
to
a four terminal configuration.
Four
terminal connections
must
be
used
for
Ohms
Zero and
Ohms
gain corrections
(8505
A
and
8506 A)
and
for
VAC
corrections
(8506A).
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