Handshake Line Transitions Checkbox

The Handshake Line Transitions checkbox enables the capture of GPIB handshake line transitions (NRFD, NDAC, DAV). The handshake lines are used to control the transfer of both GPIB data and command bytes. Selecting this option causes a large amount of GPIB events to be captured and may cause overflow errors; therefore, you should select it only when you need to debug a problem with the handshaking of a particular GPIB device. Note that some handshake line transitions may fall within the 50 ns resolution of the analyzer, so they might be captured and displayed as a single event when you check this box.