Introduction and Hardware Installation Chapter 1GPIB-PCII/IIA for Graphics 1-2 © National Instruments Corp.Optional EquipmentYou can contact National Instruments to order any of the following optionalequipment.• GPIB Bus ExtendersParallel – 100 to 120 VACParallel – 220 to 240 VACFiber-optic – 100 to 120 VACFiber-optic – 220 to 240 VACCoaxial – 100 to 120 VACCoaxial – 220 to 240 VAC• GPIB Connector Extender• GPIB-SWITCH Box• Shielded GPIB Cables*Type X1 single-shielded cables (1 m, 2 m, or 4 m)Type X2 double-shielded cables (1 m, 2 m, or 4 m)* To meet FCC emission limits for this Class B device, you must use ashielded (Type X1 or X2) GPIB cable. Operating this equipment witha non-shielded cable may cause interference to radio and televisionreception in residential areas.Hardware DescriptionThe GPIB-PCII/IIA interface board combines the functionality of theNational Instruments GPIB-PCII and GPIB-PCIIA interface boards. It canbe configured to function as either a GPIB-PCII or a GPIB-PCIIA,depending on the setting of the configuration switches on the board. Toverify the GPIB-PC mode setting of your board, refer to Verifying theGPIB-PC Mode Setting in Appendix C, Hardware and SoftwareConfiguration, later in this manual.The GPIB-PCII/IIA, equipped with the NAT4882 ASIC, transforms anyIBM PC, PC/XT, PC AT, or compatible computer into a full-functioningIEEE 488.2 Talker/Listener/Controller. The NAT4882 controller chip isfully compatible with the IEEE 488.2 standard.