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When the value is greater than the determination point, it means that the
DUT has been connected; when the value is less than the determination
point, it means that the DUT has been disconnected.
5.2.4 OUTPUT IMPEDANCE
The<100Ω>or<25Ω> can be selected according to the user’s demand.
The varied signal source output impedance will lead to the varied
current or
the difference of measuringvalue. If selecting <25Ω>, then
the AC voltage range change to 10mV~1Vrms, and the current range is
200µA~40mArms.
5.2.5 ALC
It is preset as <ALC OFF>. If selecting <ALC ON>, it ensures that the
voltage applied to both ends of Test Piece or the current flowing
through the Test Piece will be consistent with the parameter set value.
If selecting <ALC ON>, because the instrument needs to calculate the
voltage and the current for adjusting the output, it will increase the time
required for the measuring. If the Auto Level Control cannot achieve
the range to be set, the page will display < ALC FAIL> at the lower-right
corner of panel, and it recommend setting as <ALC OFF> because it
will affect the measuring speed.
5.2.6 BEEP WHEN
It is preset as <OFF>. The <FAIL> option means that the fail beep will
sound if the test result is judged as <FAIL>. The <PASS> option means
that the pass beep will sound if the test result is judged as <PASS>.
5.2.7 RANGE HOLD
It is preset as <ON>. If selecting <ON>, the measuring range is hold at
the range, which is used by the first time measuring. If selecting <OFF>,
the most suitable test range is set automatically. Faster measuring
speed can be achieved when setting at <ON>.
5.2.8 FAIL RETSET
It is preset as <OFF>. It retest continuously until the test result is pass,
when the test result is fail. If selecting <OFF>, it doesn’t execute this
function. If selecting <STEP 1>, only the first step is going to retest. If
selecting <ALL>, no matter which step occur fail result, the fail step is
going to retest until the result become pass.