Features

• Channel : 4

• Input frequency : 0.3~1000Hz max. (Frequency mode)

                                  5000 Hz max (Counter mode)

• Input Level : Isolated or TTL level

• Minimum Pulse Width : 500 µ sec (Frequency mode)

•                                             100 µ sec (Counter mode)

• Minimum Input Current : 2mA (Isolated)

• Isolated Input Level

  Logic Level 0 : +1V max

  Logic Level 1 : +3.5V to 30V

• TTL Input Level

Logic Level 0 : 0V to 0.8V

Logic Level 1 : 23 to 5V

• Isolated Voltage :  1000Vrms

• Mode : Counter (Up/Down, Bi-direction)

             Frequency

• Programmable Digital Noise Filter : 8~65000 µ sec