To check the Event ID for the installed device.
INT32U Array
Same as the counter's channel count.
Get only
The Event ID of each channel is indicated by a INT32U array.
"0" indicates there is no event occurred on this channel.
This property is added because the counter cannot generate a uniform event ID. For example, the event ID of PCI-1750/PCI-1751 is ADS_EVT_PORT0 and ADS_EVT_PORT1, while the event ID of PCI-1780 is a different one.