Chapter2 NI2590/2591 Operation
NI2590/2591 User Man ual 2-2 ni.com
Functional Overview
Thef ollowing block diagrams illustrate the key functional components of
the NI 2590 and NI 2591 switch modules.
The major components of the NI 2590/2591 are as follows:
•General-purpose high-frequencyrelays
•Switch control circuitry
•Random scanning
•PXIbusinterface
•Triggers