7 Operating Instructions
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7-9
In the 200V and 700V ranges, at high frequencies (200V range more than 100kHz,
700V range more than 10kHz), please make sure, that the applied AC Voltage does
not surpass the RMS Value product of 10,000,000V x Hz.
7.4 DC and AC Current
The 5017 Multifunction Meter carries out Current measurements through the use of
precise shunt resistors. The Voltage drop caused by passing the Current through the
shunt is measured. As defined by the lead resistance R
L
and the shunt resistance R, a
burden voltage U
B
is generated. Under certain conditions, this can result in erroneous
measurements.
Diagram: Principle of current measurement with shunt resistors
U
o
= Source Voltage
R
q
= Source
Resistance
U
B
= Burden Voltage
R = Shunt Resistor in Multimeter
The error, in %, for a measurement, is then calculated as follows:
Error(%)
U
U
= −
×
100
0
B