To test the input resistance (oscilloscope)
Testing the input resistance verifies the performance of the following specification:
• Input resistance
This test checks the input resistance at the 50 Ω and 1 MΩ settings in the Coupling
field.
Equipment Required
Equipment Critical Specifications Recommended
Model/Part
Digital Multimeter Measure resistance (4-wire) better than 0.25%
accuracy
HP 3458A
Cables (2) BNC (m)(m) 48-inch HP 10503A
Adapter BNC Tee (m)(f)(f) HP 1250-0781
Adapters (2) BNC (f) to Dual Banana Plug HP 1251-2277
Set up the equipment
11 Turn on the equipment required and the logic analyzer. Let them warm up for
30 minutes if you have not already done so.
22 Set up the multimeter to make a 4-wire resistance measurement.
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