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5320A
Users Manual
Turning Power On
With the Calibrator setup for the proper line voltage, press the power switch on the back
panel so the "I" side of the switch is depressed. During its power-up cycle, the Calibrator
displays a power supply test screen while initializing internal circuits and checking the
mains connection. The mains connection tests are:
Power line voltage test – The line voltage must be within preset limits. For the 230 V
setting, the range must be between 180 V and 260 V. For the 115 V setting, the limits
are between 90 V to 130 V.
Power line frequency test – The frequency must be within preset limits: 49 Hz to 51
Hz or 59 Hz to 61 Hz.
Potential difference and polarity test – The potential difference between neutral and
protective earth must be less than 15 V.
The polarity of the neutral and the line wires must be correct for the 5320A
to power on. If the "L-N-PE" test fails during the power-on process, the
neutral and the line wires should be swapped on the plug end of the 5320A
power line cord. Only a qualified service technician should make this
change.
The screen in Figure 2-2 is displayed when the Calibrator completes these tests.
If the Calibrator detects that the power line is improperly connected, for example the line
or hot wire is crossed with the neutral wire, it will display "Fail". In this case, remove the
power cord and correct the problem before trying to turn the Calibrator on. The
Calibrator will display "Pass" for several seconds while it performs additional internal
circuitry tests, if all tests pass and the power line is properly connected,.
When the initialization tests finish, the Calibrator resets to a reference state of Meter
mode operation.
2-6
Note
Figure 2-2. Initialization Complete Screen
ehq020.bmp
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