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Tonghui TH2840 Series - Fail Rescan; Bias on Delay; Ignore Nom; Trigger Delay

Tonghui TH2840 Series
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74
for users to view.
Judgement result mode: It means that the test data of each parameter is displayed one by one
during the scanning process, and the total PASS/FAIL is displayed in large characters after it is
finished.
Fail list: It means that the test data of each parameter is displayed one by one during the scanning
process, and the unqualified parameters and their limit settings are displayed in the center of the
screen after it is finished.
7.8.6 Fail Rescan
This area is used to set the number of retests for defective products. It is used to set the number of
retests in order to prevent a certain parameter from being defective due to interference during the
automatic scanning test process, thereby increasing the yield of good products.
Retest range of defective products: 0-9 times.
7.8.7 Bias On Delay
This area is used to set the delay when applying DC current bias test.
Current bias delay range: 0~60s; 0 means no delay.
The maximum test delay is 60 seconds.
7.8.8 Ignore Nom
This area overlaps 2 functions, one is to ignore the nominal value for testing, and the other is the
deviation deduction limit. All are related to the nominal value. They are as follows:
FORCE DEV: When this option is selected, the user will not be restricted by the set nominal value
(STD) when deducting deviation. That is, it can be deducted when the deviation between the test
value and the set nominal value (STD) is large. For example, when the user inserts the wrong pin of
the transformer.
FORCE TEST: When this option is selected, as long as the winding pin is set, the parameter to be
tested for the winding can be measured without setting the nominal value. It is convenient for users
to test and observe when they do not know the nominal value of the transformer sample. This is
generally not used.
SKIP TEST LMTED DEV: When this option is selected, it means that the pin position of the
winding is set but the nominal value of the parameter to be tested is not set, then the parameter to be
tested will not be measured during the test; this The mode will be limited by the nominal value
when the deviation is deducted. When the user's test value deviates greatly from the set nominal
value (STD), the deduction will not succeed.
7.8.9 Trigger Delay
This area is used to set the delay time from when the instrument is triggered to the start of sweep
measurement.

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