Fluke 5520A - Four-Wire and Two-Wire Connections; Four-Wire Connection; Two-Wire Compensation; Compensation off

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Four-Wire and Two-Wire Connections
Four-Wire Connection
The four-wire connection is typical for calibrating
laboratory measurement equipment, providing.
Increased precision for resistance values below
110 kΩ. For other values, the lead resistances do
not degrade the accuracy, so the Calibrator
changes the compensation to off (COMP off).
Two-Wire Compensation
The two-wire connection is typical for calibrating
precision handheld digital multimeters (DMMs)
with a two-wire input. Increased precision is
provided for resistance values below 110 kΩ and
capacitance values 110 nF and above. For other
values, the Calibrator changes the compensation
to off (COMP off).
Compensation Off
Compensation off is a typical connection for
calibrating handheld analog meters or DMMs with
a two-wire input. This connection is used for all
values of resistance and capacitance and is
usually selected when the analog meter or DMM
level of accuracy does not require the additional
precision. This is the default condition whenever
an ohms or capacitance output is made, following
an output that was not ohms or capacitance.
Cable Connection Diagrams
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
20V PK MAX
20V PK MAX
5520A
CALIBRATOR
87
TRUE RMS MULTIMETER
MIN MAX
RANGE HOLD
H
REL Hz
mA
A
A
µ
mV
V
V
OFF
A
COM
V
mA A
PEAK MIN MAX