National Instruments 321906B-01 用户手册
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National Instruments Corporation
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NI 2501/2503 Operation
This chapter contains a functional overview of the NI 2501/2503
module and explains the operation of each functional unit making up
the NI 2501/2503 module.
module and explains the operation of each functional unit making up
the NI 2501/2503 module.
Functional Overview
The block diagrams on the following pages illustrate the key functional
components of the switch card modules. Figure 2-1 shows the NI 2501 and
Figure 2-2 shows the NI 2503.
components of the switch card modules. Figure 2-1 shows the NI 2501 and
Figure 2-2 shows the NI 2503.
The major components of the NI 2501/2503 modules are as follows:
•
Multiplexer
•
Relay/FET switch control circuitry
•
Random scanning
•
PXIbus interface
•
Triggers