Output Voltage and Current for Parallel PortHardware: PXI/CompactPCI>>Controllers
Problem: I have a parallel port and I would like to know what voltage and current it outputs. Solution: Most newer parallel ports use TTL levels. TTL standards permit a logic high to be between 2.4V to 5V for logic high and between 0 and .4 V for logic low. When outputting a logic low, the port is specified to have less than 16 ma and when it is outputting logic high a maximum of 400 µA can be sourced. Related Links: Developer Zone Example: Using VISA to Access the Parallel Port in LabVIEW KnowledgeBase 0TL70ATL: Using the Parallel Port as an Input/Output Channel Attachments:
Report Date: 11/09/2004 Last Updated: 01/22/2009 Document ID: 3F8C34PH |
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