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When P/F is selected, it is not possible to see the test results directly at the end of the
test. In order to review the test results refer to section 4.2.3. Reviewing Test
Results.
When Last is selected, the results of the last test step performed will be displayed on
the Perform Tests screen. There will not be a change in appearance or special
screen displayed in this mode.
Lock
Turning Lock ON restricts access to parameter and system settings. The level of
security is determined by the Mem Lock function.
Mem Lock
Mem Lock is a sub-function of the Lock setting. In order for the Mem Lock function to
work, the Lock must first be turned ON. Turning the Mem Lock OFF will allow the
user to access all available memory locations but restricts access to memory and step
editing capabilities. Turning the Mem Lock ON will allow the user to only run the
currently loaded memory.
Disabling Lock
Once the Lock function is activated, a special procedure is required to defeat the
security. To defeat the security press the top soft key while powering up the
instrument. Now you may access the system menu and turn the security function
OFF.
Smart GFI
The high voltage power supply of the Hypot III is internally referenced to earth ground.
Since the leakage current measuring circuit of the instrument monitors only current
that flows through the return lead the possibility exists for current to flow 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 the operator touches 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 Hypot III’s Return lead is floating, the SmartGFI circuit
enables, protecting the test operator from electric shock. When the Hypot III’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, Hypot III
allows the user to perform tests on devices that have their chassis’s earth grounded
by the test fixture or test environment.
Cal-Alert (Calibration Alert)
The Cal-Alert feature alerts the user that the instrument is due for calibration. Turning
this parameter ON will activate the Cal-Alert function and when the date matches the
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