Fluke 5500A - AC Voltage Harmonic Amplitude Accuracy (AUX); DC Voltage Offset Accuracy

Front Panel Operation
Connecting the Calibrator to a UUT
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4-9
4-13. Connecting the Calibrator to a UUT
Warning
The 5500A Calibrator is capable of supplying lethal voltages.
Do not make connections to the output terminals when a
voltage is present. Placing the instrument in standby may not
be enough to avoid shock hazard, since the O key could be
pressed accidentally. Press reset and verify that the Y
annunciator is lit before making connections to the output
terminals.
The outputs labeled NORMAL (HI and LO) are used to source voltages, resistances,
capacitance and resistance temperature detector (RTD) calibration values. The LO
terminal is tied to analog common, which may be tied to earth ground or floated with the
Z key. Voltages generated by the 5725A may be routed through these outputs.
The outputs labeled AUX (HI and LO) source current and low voltages in the dual
voltage function. These outputs are also used for four-wire or remote sensing in the
resistance, capacitance and RTD functions.
When the scope option is installed, the BNC connectors labeled Scope and Trig Out
deliver voltage signals for Oscilloscope calibration.
The socket labeled TC is used to measure thermocouples and to generate simulated
thermocouple outputs.
4-14. Recommended Cable and Connector Types
Warning
Using standard banana plugs on the calibrator output will
expose lethal voltages when not completely inserted into a
mating jack. Fluke recommends the use of safety shrouded
plugs when working with voltages of 33 volts or greater.
Caution
To prevent possible equipment damage, use only cables with
correct voltage ratings.
Cables to the calibrator are connected to the NORMAL and AUX jacks. To avoid errors
induced by thermal voltages (thermal emfs), use connectors and conductors made of
copper or materials that generate small thermal emfs when joined to copper. Avoid using
nickel-plated connectors. Optimum results can be obtained by using Fluke Model
5440A-7002 Low Thermal EMF Test Leads, which are constructed of well-insulated
copper wire and tellurium copper connectors. (See Chapter 9, “Accessories.”)