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 pro-
grammable 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)
Summary of Contents for USB-4751
Page 1: ...USB 4751 4751L 48 24 Channel Digital Input Output USB Module User Manual ...
Page 6: ...USB 4751 4751L User Manual vi ...
Page 7: ...2 CHAPTER 1 Introduction Sections include Hardware Features Software Overview ...
Page 10: ...USB 4751 4751L User Manual 4 ...
Page 23: ...2 APPENDIX A Specifications ...