Associated Research HypotULTRA 7800, Operation And Service Manual

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test cables may not be connected properly. The instrument can set the Charge-LO
parameter manually or automatically. To manually set the Charge-LO current, use the
touchscreen keypad to enter the value. To automatically set the Charge-LO current
select the Charge-LO parameter and connect all test leads to the DUT as you would
when performing an actual DCW test. Press the TEST button on the front panel of the
instrument.
Please be aware that the program will activate high voltage
on the output connector while the TEST button is pressed.
S'il vous plaît soyez conscient que le programme va activer haute tension sur le
connecteur de sortie tandis que le bouton TEST est pressé
The program will read the charging current of the DUT and set the Charge-LO current
at approximately one half (1/2) of the reading. The instrument will beep and the new
value will automatically be updated in the field. You do not need to select the ENTER
key for the new parameter to be accepted.
Continuity
The Continuity test is generally used to test the ground conductor of a line cord. If the
resistance exceeds Max-Lmt trip point or drops below the Min-Lmt trip point the
HypotULTRA will signal a continuity failure. If you are testing products with two prong
plugs, do not activate the continuity circuit.
Offset
This function allows the instrument to compensate for lead and test fixture resistance during a
Continuity test
To manually set an Offset value enter a mΩ value via the numeric keypad and then select the
ENTER (
↵
) key to accept the new value or the EXIT key to escape from the edit.
To automatically set an Offset value, set the output voltage, current, and frequency to the
values you will use on the DUT and connect the test cables, test fixture, or Scanner channel
with fixturing to the instrument. Next, short the ends of the test cables and press the TEST
button. The instrument will beep and automatically update the new value in the field. You do
not need to select the ENTER key for the new parameter to be accepted.
NOTE: do not connect the DUT to the instrument when performing an offset. This will
create erroneous results when you perform a test.