求翻译：换其它USB端口也是一样，没有规律，而且每次烧录完后,USB 2.0的第26脚都没有频率，必须使用示波器的表笔碰几下USB跟FPGA连接的管脚后，USB 2.0的第26脚才会有频率是什么意思？

Change other usb port is not the law, and after each burn, usb 2.0 26 feet are not the frequency, the table must use the oscilloscope to touch a few pen usb connection with fpga pin, usb 2.0 26 feet will have frequency

For other USB port as well, there is no law, and in each case after the burn, USB 2.0 OF THE FIRST 26 feet are not frequency, you must use an oscilloscope probe to touch the USB FPGA connections after the pins, USB 2.0 is only the first 26 feet will be a frequency

Trades other USB port also is same, does not have the rule, after moreover each time the fever records, the USB 2.0 26th foot does not have the frequency, must use the oscilloscope the table pen to bump several USB after the FPGA connection base pin, the USB 2.0 26th foot only then can have the freq

For other USB ports are the same, there is no law, and after each burn out, none of the 26th foot USB 2 frequency, you must use the Oscilloscope Probes touch after few USB connected to FPGA pin, USB 2, feet have frequency

正在翻译，请等待...