■ Test Frequency: 0Hz - 2MHz

■ Provide 0~20A of constant current output, 

   and must be controlled by TH1778A

■ Support 6 machines on line at most and 

   reach 120A of constant current output

■ Extreme refined current step: when <1A, reach 5mA; 

                                                    when <5A, reach 25mA; 

                                                    when <120A, reach 100mA