Why Does the Trigger Activate Repeatedly When the Detection Level is set to "H Active" and External Trigger Input is "H" for the WE7251/WE7271 Digitizer Module?

The external trigger input (TRIG IN) as well as external input/output (EXT. I/O) trigger signal becomes the level signal. The WE7251/WE7271 digitizer module will detect the bus trigger by that level. As long as the external signals remain "true" or "high," the trigger will activate repeatedly.