1. I have installed the NI-488.2 driver，and the agilent E3631A can be recognized by the GPIB-USB-HS
2.I have selected all list passports include NiVisaTulip. dll，but there is no use.
3. I have replaced three oscilloscopes，it still can't be recognized
4. Whether I need install one more driver，I'm so confused，please help me，thank you all very much.
