Function Description:

1. Power Input Source：220VAC(or 110VAC)/50Hz/3A/1F。

 2. Volts-meter(Volts)：Using 3-1/2 digits LED to display 0~50.0Vdc voltage.

 3. Amps-meter(mA)：Using 3-1/2 digits LED to display 0~4999mA current.

 4. Tachometer (RPM)：Using 5 digits LED to display the revolution( speed:100~49999rpm) of dc fan.

  5. The range of output voltage :0.0~50.0Vdc (resolution:0.1volt)

  6. Typical output current: 0~4500mA @ instant maxmum output current :4999mA

  7. With short-circuits protection circuits and function, and when the output terminals occur short-circuits with15Sec. , it will automatically trip to safety mode

  8. Usage range: 2 Terminals /3 Terminals / Temperature control and PWM dc cooling fan.

  9. The function and specification of PWM dc cooling fan tester is following as :

     9-1. There are eight testing steps in the different setting conditions of frequency(Hz)and dutycycle(%)of PWM output.

    9-2. The range of Frequency: 10Hz~ 99.999KHz,resolution: @Hz range: 1Hz; @KHz range:0.001KHz The range of Dutycycle:1~100%,Duty Cycle resolution: Under1 KHz output is below 1%,

above 1 KHz output is below 10%.

    9-3. There are 3 type ( P1、P2、P3)of PWM output mode in PO-TYPE to choice

　9-4. There are 4type PWM output voltage of PO-SOURCE with 3.3V、5V、12V、+VCC to choice

    9-5. There is a MODE(2T/3T/EXT) to detect the revolution of dc cooling fan.  It could choice internal mode 2T pick-up revolution signal by current waveform /3T pick-up signal revolution               by output of FG terminal or external mode by pick-up revolution signal of photosensor (The photosensor and jigger post is a option accessories)

10.The items of setting parameter for testing：(To input the setting parameter by keyboard and show the testing reports or adjudgement results by liquid crystal display).

      The setting parameter for testing is following as:

    (a).The delay time:the sampling time for testing(0~99Sec.)

    (b).The lower/upper limiting setting value of the dissipation current (0~4999mA)   

    (c).The lower/upper limiting setting value of the revolution (100~49999rpm)

    (d).The frequency setting value: 10Hz~ 99.999KHz

    (e).The dutycycle setting value: 1~100%. 

11.There is 3 voltage-output volumes in the panel 

V1- Adj.: It is aim to set low voltage starting test of dc cooling fan (typical :about 0.6*(5V, 12V, 24V,or 48V))

V2- Adj.: It is aim to set the low voltage test of temperature control cooling fan (below 5V, 12V, 24V,or 48V) or pwm step1~step4 test

V3- Adj.: It is aim to set the rating voltage test of dc cooling fan (over 1.2*(5V, 12V, 24V,or 48V))or pwm step5~step8 test

The tester is with a function of output voltage soft starting in testing to protect dc cooling fan and dc power supply system

  12. Testing results: to diplay the testing data and show the results by the OK/NG indicating lamp。

  13. There is a TYPE (A/B/C )to choice the proper 2T dc cooling fan to test and detect the revolution. It could select TYPE A for 2T universal type(near100~499mA) dc cooling fan ;TYPE B for 2T lower dissipation current (near50~100mA)dc cooling fan; TYPC for 2T the lowest dissipation current (near25~50mA)dc cooling fan (.internal mode 2T pick-up revolution signal by current waveform. external mode by pick-up revolution signal of photosensor. (The photosensor and jigger post is a option accessories)

 14. There are with 50 models data memories and one model with a lot of testing parameters memories of dc cooling fan in the tester.

15. . There is a (S/A/P) TEST MODE to test the revolution of dc cooling fan.It could select S MODE to test

    2T /3T dc cooling fan by V1- Adj. to set low voltage starting test and pick-up revolution signal by current

waveform /3T pick-up signal revolution by output of FG terminal or external mode by pick-up revolution

signal of photosensor (The photosensor and jigger post is a option accessories)