Associated Research HypotULTRA 7800, Руководство по эксплуатации и обслуживанию

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directly from the high voltage output to earth ground without being measured. The
SmartGFI (Ground Fault Interrupt) circuit monitors the current between the high
voltage output and earth ground. Therefore, if you touch the high voltage lead and
earth ground, the instrument will detect this hazardous condition and shut off
immediately.
SmartGFI goes beyond a standard GFI circuit by automatically determining the return
configuration of the DUT (grounded or floating) and enabling or disabling depending
on the situation. When the HypotULTRA’s Return lead is floating, the SmartGFI circuit
enables, protecting the test operator
from electric shock. When the HypotULTRA’s
Return lead is earth grounded, the SmartGFI circuit disables and the instrument
operates in a grounded return mode of operation. If the GFI were to remain active in
this state, the tester would continuously fail since all current is returning through earth
ground. By disabling the SmartGFI circuit and operating in a grounded return mode,
HypotULTRA allows you to perform tests on devices
that have their chassis’s earth
grounded by the test fixture or test environment.
Touch the Smart GFI icon and the following screen will appear:
The Smart GFI is an adjustable function ranging from 0.5
– 5.0mA. Setting the Smart
GFI value to 0mA will simply turn the function OFF. To set the Smart GFI enter a
value using the touchscreen keypad and touch the enter key (
↵
)
to save the value and
move on to the next parameter. Use the
← key to clear the entered value. To exit
back to the previous menu use t
he “X” key.
4.4.2 PLC Remote
The next parameter in the Setup System menu is the PLC Remote. You can set the
PLC Remote function to ON or OFF. To set the PLC Remote function, touch the
ON/OFF key. To save the setting touch the enter key (
↵
)
and move to the next
parameter.