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•
Read all safety Information before you use the Product.
•
Do not use the Product if it operates incorrectly.
•
Replace the mains power cord if the insulation is damaged
or if the insulation shows signs of wear.
•
Do not touch voltages > 30 V ac rms, 42 V ac peak, or 60 V
dc.
•
Do not use the Product around explosive gas, vapor, or in
damp or wet environments.
•
Make sure the ground conductor in the mains power cord is
connected to a protective earth ground. Disruption of the
protective earth could put voltage on the chassis that could
cause death.
•
Use only the mains power cord and connector approved for
the voltage and plug configuration in your country and rated
for the Product.
•
Use only cables with correct voltage ratings.
Overload Protection
The Calibrator supplies reverse-power protection, fast output disconnection, and/or fuse
protection on the output terminals for all functions.
Reverse-power protection prevents damage to the calibrator from occasional, accidental,
normal-mode, and common-mode overloads to a maximum of ±300 V peak. It is not
intended as protection against frequent (systematic and repeated) abuse. Such abuse will
cause the Calibrator to fail.
For volts, ohms, capacitance, and thermocouple functions, there is fast output
disconnection protection. This protection senses applied voltages higher than 20 volts on
the output terminals. It quickly disconnects the internal circuits from the output terminals
and resets the calibrator when such overloads occur.
For current and aux voltage functions, user replaceable fuses supply protection from
overloads applied to the Current/Aux Voltage output terminals. The fuses are accessed by
an access door on the bottom of the calibrator. You must use replacement fuses of the
same capacity and type specified in this manual, or the protection supplied by the
Calibrator will be compromised.
Operation Overview
The Calibrator may be operated at the front panel in the local mode, or remotely using
RS-232 or IEEE-488 ports. For remote operations, several software options are available
to integrate 5522A operation into a wide variety of calibration requirements.
Local Operation
Typical local operations include front panel connections to the Unit Under Test (UUT),
and then manual keystroke entries at the front panel to place the Calibrator in the desired
output mode. The front panel layout facilitates hand movements from left to right, and
multiply and divide keys make it easy to step up or down at the press of a single key. You
can also review Calibrator specifications at the push of two buttons. The backlit liquid
crystal display is easy to read from many different viewing angles and lighting
conditions, and the large, easy-to-read keys are color-coded and provide tactile feedback.
Introduction and Specifications
Overload Protection
1
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