Keysight B2980B User’s Guide, Edition 1
253
Function Details
Setup Integrity Checker
Example 2
Shielding Effect for the 1.5 m Triax-Alligator Cable
This example compares the case with connecting the Triax-Alligator cable only
(the left side in the figure) and the case with connecting the Triax-Alligator cable
covered by the shield case that is connected to the chassis (the right side in the
figure). In the comparison, the noise checking was performed 5 times and the
average of the results is calculated in both cases.
The average of Variance Ratio seems to be improved by about 1/100 due to the
shielding effect.
•
Executes noise checking 5 times at PLC=1 and
20 pA range
•
1.5 m Triax-Alligator Cable
•
Cable end is OPEN (no shielding)
•
Results
•
Average of Target =
7.7E -13
•
Average of Variance Ratio =
3625
•
Executes noise checking 5 times at PLC=1 and
20 pA range
•
1.5 m Triax-Alligator Cable
•
Cable end is OPEN (shielding)
•
Results
•
Average of Target = 4.22E-15
•
Average of Variance Ratio = 35.4
Shielding
Triax-Alligator Cable
x 1/100
Triax-Alligator Cable
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