Scanning

Scanning is typically used when the timing of connections must be synchronized with an event from another device, such as a measurement device (hardware-timed scanning), or must be timed by software (software-timed scanning).

Connection operations are entered in a scan list that is downloaded to the memory of the switch module. The first entry in the scan list is executed when the scan is initiated. The trigger settings determine how the switch advances through subsequent entries in the list. The scan list can be executed once or repeatedly.

There are three trigger schemes for scanning:

• Software trigger scanning—for software-timed scanning
• Synchronous scanning—for hardware-timed scanning
• Handshaking—for hardware-timed scanning

Refer to Controlling and Triggering Switches for information about controlling and triggering your switch module.