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UCC27282: VHI rising to VHO rising

Part Number: UCC27282

In UCC27282 datasheet,  The delay time of VHI rising to VHO rising is 30ns max,but in my testing ,the dalay time is 174ns, 

Channel 2 tested at pin7, and there is no RC delay.

channel3 tested at mosefet Gate-source.

I also check oscilloscope and probe,they are no problem. 

I don't understand why the delay time is musch longer than the SPEC. please confim. thanks!