Why Does My PC/104-GPIB Board Have Keyed/Plugged Pinholes and Corresponding Missing Pins? Hardware: GPIB>>Plug-in Controllers>>PC/104-GPIB
Problem: I have a National Instruments PC/104-GPIB board. Some of the pinholes of the PC/104 connector are keyed, preventing pins from being plugged into them. This prevents some of my other PC/104 boards from stacking on top of (plugging into) the NI PC/104-GPIB board. Also, the pins corresponding to the keyed pinholes are missing. Why is this so? Why are some of the pinholes keyed and the corresponding pins missing? Solution: The keyed pinholes and corresponding "missing" pins are part of the PC/104 specification. While National Instruments chooses to follow this specification, some manufacturers choose not to with regards to this requirement. You need to contact the manufacturer of the non-keyed board(s) and ask them for instructions on how to make their board compatible with other PC/104 devices. Please refer to the PC/104 Specifications link below for the most up-to-date specifications of the PC/104 standard. Note: The specifications discussed in this document are based on the newest PC/104 Specifications (version 2.5 - November 2003). The key locations are shown on Table 2 of Appendix B. Related Links: PC/104 Specifications PC/104 Embedded-PC Modules Getting Started Card: PC/104-GPIB for Windows NT Getting Started Card: PC/104-GPIB for Windows 98/95 GPIB Hardware Guide Attachments:
Report Date: 10/25/2004 Last Updated: 10/27/2004 Document ID: 3EO8T3ZH |
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