features www.advantech.com/products online download all product specifications are subject to change without notice last updated : 20-jan-2006 PCI-1751U 48-bit universal digital i/o and counter card speci?cations digital input ? channels 48 (shared with output) ? compatibility 5 v/ttl ? input voltage logic 0: 0.8 v max. logic 1: 2 v min. ? interrupt capable ch. 2 digital output ? channels 48 (shared with input) ? compatibility 5 v/ttl ? output voltage logic 0: 0.4 v max. logic 1: 2.4 v min. ? output capability sink: 0.4 v @ 24 ma source: 2.4 v @ 15 ma counter/timer ? channels 3 ? resolution 2 x 16-bit counters, or 1 x 32-bit counter (jumper selectable) 1 x 16-bit event counter ? compatibility 5 v/ttl ? max. input frequency 10 mhz ? reference clock internal: 10 mhz external clock frequency: 10 mhz external voltage range: 5 v/ttl ? 48 ttl digital i/o lines ? emulates mode 0 of 8255 ppi ? buffered circuits for higher driving capacity than 8255 ? interrupt handling ? timer/counter interrupt capability ? supports both dry and wet contact ? keeps the i/o port setting and do state after system reset ? universal pci & boardid switch general ? bus type PCI-1751U: universal pci v2.2 ? i/o connectors 68-pin scsi-ii female connector (centronics type) ? dimensions (l x h) 175 x 100 mm (6.9" x 3.9") ? power consumption typical: 5 v @ 850 ma max: 5 v @ 1.0 a ? operating temperature 0 ~ 70 c (32 ~ 158 f) ? storing temperature -20 ~ 80 c (-4 ~ 176 f) ? storing humidity 5 ~ 95% rh, non-condensing (refer to iec 68-2-3) applications ? industrial ac/dc i/o monitoring and controlling ? relay and switch monitoring and controlling ? ttl, dtl and cmos logic signal sensing ? indicator led driving ordering information ? PCI-1751U 48-bit universal digital i/o card and counter card, users manual and driver cd-rom. (cable not included) ? pcl-10168 68-pin scsi cable, 1 and 2m ? adam-3968 68-pin scsi cable wiring terminal for din-rail mounting ? adam-3968/20 68-pin scsi-ii to three 20-pin wiring terminal module for din-rail mounting ? adam-3968/50 68-pin scsi to 2 x 50-pin box headers converter module ? pcld-8751 48-ch isolated di board ? pcld-8761 24-ch replay and 24-idi board introduction PCI-1751U is a 48-bit digital i/o card for the pci bus. its 48 bits are divided into six 8-bit i/o ports and users can con?gure each port as input or output via software. PCI-1751U also provides one event counter and two 16-bit timers, which can be cascaded to become a 32-bit timer . PCI-1751U adds a universal pci interface for 3.3 v compatibility . ful?lling the true requirements of industrial applications with two practical functions, the PCI-1751U ful?lls the true requirements of industrial applications. when the system is hot reset, (power is not shut off), the PCI-1751U can either retain the last i/o port setting and output value, or reset to its default con?guration, depending on jumper settings. this function protects the system from wrong operations during unexpected system resets. additionally, the PCI-1751U supports both dry and wet contacts so that it can easily interface with other devices. interrupt handling capability two lines in each i/o port (c0) and two of the three counter outputs (timer 1 and counter 2) are connected to the interrupt circuitry. two interrupt request signals can be generated at the same time and the software can service the two request signals by isr. moreover, a pin in the connector can output a digital signal simultaneously with the card generating an interrupt, and users can utilize this function to trigger external devices with the interrupt.
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