PAD128 ManualPage 1-2 Manual MPAD128.D1gDigital Input/OutputThe PAD128 also has capability for 16 digital input/output bits that can be programmed as inputsor outputs on a groups-of-eight basis. This function is based on the industry-standard type 8255programmable peripheral interface and the A and B ports are available for use.Special FunctionsControl logic in the PAD128 uses a programmable array and special functions can be factoryprogrammed. If you have need for special functions such as external synchronization give us a call.Utility SoftwarePrograms on 3½" diskette or CD-ROM are included with the PAD128. These programs are basedon the assumption that the PCMCIA Card and Socket Services have been loaded on the hostcomputer to provide the software interface to the card slot drive (these services are normallyprovided by Windows).The diskette/CD includes a program called FINDBASE that helps you find an unused base addressto use with the card when using DOS. PAD128 supports base addresses from 100h to 3FFh. Also,there is a TSR memory-resident program required to configure the card for it to be recognized bythe Card and Socket Services when using DOS.Sample programs in 6 languages (Borland C 3.5, Turbo Pascal 7.0, C++Builder 3, Delphi 4.0, VisualC++ 5.0, and Visual BASIC 5.0) are provided.SpecificationsData Acquisition• Analog Inputs: As many as eight single-ended inputs, or four differential inputs, or amixture of both but not to exceed use of eight input pins. (See thelimitation on pairing mentioned in the Data Acquisition section.)• Input Voltage Range: Ch 0 and 1: ± 10V; Ch 2 and 3: ± 5V; Ch 4 and 5: 0-5V;Ch 6 and 7: 0-0.1V .NoteThese are the default ranges. If your card has been modified, there will be an addendum sheet in thefront of the manual.