Appendix A Specifications. Advantech USB-4751, USB-4751L, 48/24-Channel Digital Input/Output USB Module USB-4751/4751L, USB-4751/4751L

Appendix A Specifications

A.1 Digital Input/Output

Channels

Programming

Mode

Input Voltage

Output Voltage

+5V Output

Interrupt Mode

A.2 Counter

48 Bi-directional (24 for USB-4751L)

8255 PPI Mode0

Low 0.8 V max

High 2.0 V min

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)

100mA max.

PC0 source; PC4 gate/PC0 source

Channels

Resolution

Compatibility

Base Clock

Frequency measurement

PWM Generation

External Input Divide

A.3 General

2 independent

32-bit counters (low 16bit by hardware and high 16bit by ARM)

TTL compatible logical level input

External 8MHz max.

2 independent programmable clock sources

Internal 20MHz max.

Input frequency from 0.1Hz to 10Mhz

2Hz to 10Mhz

2 to 65535

I/O Connector Type

Dimensions

Power

Consumption

Temperature

Relative Humidity

Opto-22 * 2 and 10-pin screw terminal *1

132 X 80 X 32 mm (5.2” X 3.2” X 1.3”)

5 V @ 500 mA max.

Operation 0~60° C (32~140° F) (refer to IEC 68-2-1, 2)

Storage -20~70° C (-4~158° F)

5%~95% RH non-condensing (refer to IEC 68-2-1, 2)

USB-4751/4751L User Manual 18