Advantech USB-4751/4751L - Manual (Page 24)

USB-4751/4751L User Manual 18
Appendix A Specifications
A.1 Digital Input/Output
A.2 Counter
A.3 General
Channels
48 Bi-directional (24 for USB-4751L)
Programming
Mode
8255 PPI Mode0
Input Voltage
Low
0.8 V max
High
2.0 V min
Output Voltage
Low
0.5 V max. @ 12mA (sink)
High
3.8 V min. @ -12mA (source)(each line)
3.8 V min.@5mA(source)(high of every line)
+5V Output
100mA max.
Interrupt Mode
PC0 source; PC4 gate/PC0 source
Channels
2 independent
Resolution
32-bit counters (low 16bit by hardware and high 16bit
by ARM)
Compatibility
TTL compatible logical level input
Base Clock
External
8MHz max. 2 independent program-
mable clock sources
Internal
20MHz max.
Frequency
measurement
Input frequency from 0.1Hz to 10Mhz
PWM Generation
2Hz to 10Mhz
External Input Divide
2 to 65535
I/O Connector Type
Opto-22 * 2 and 10-pin screw terminal *1
Dimensions
132 X 80 X 32 mm (5.2” X 3.2” X 1.3”)
Power
Consumption
5 V @ 500 mA max.
Temperature Operation
0~60° C (32~140° F) (refer to IEC 68-2-1, 2)
Storage
-20~70° C (-4~158° F)
Relative Humidity
5%~95% RH non-condensing (refer to IEC 68-2-1, 2)