From  Finland(Teknopaja Oy)

COMPANY INFO

Salon TeknopajaOyis located in Salo, Finland. It design, manufacture and set up tester devices.

Main product is PWB Level Drop Tester. They are equipped with special measurement devices and softwareswhich are driven by one user interface. Most customers are electronic industry companies over the world.

Salon TeknopajaOymakes also different test mechanics and jigs with test needle and probe contacts, Free Fall Testers, Push and Pull Cycle Tester for power supplies, Cable Bending Tester etc.

Specifications

• Drop Tester determines reliability of the PWC (Printed Wiring Board) level against mechanical shock
• Max drop height 1600 mm
• Test control In calibration mode controlled by touch screen; in testing mode controlled by Windows PC and the Event Detector software
• Catcher which eliminates the rebound, also possible to switch off
• Test method by Jedecstandard and others. Tested with the following values of acceleration peak (G)/ pulse duration (ms): 2900 G/ 0.3 ms, 2000 G/ 0.4 msand 1500 G/ 0.5 ms)
• Size of the standard test board Maximum 170 mm x 90 mm
• Safety CE Compliant

• Noise level in use range ~ 50 –90 dB, dependant on the absorber material, measured the door open from 3 meter’s distance
• Weigthof the table 4 kg
• Maximum drop weight approx. 1,5 kg
• Material of the table nickel coated aluminium
• Shock stone Finnish granite, “Kurunharmaa” weight approx. 100 kg
• Standard power inputs main power AC 240 V or AC 110 V; 50…60Hz; ampere req. 6 A (10 A for 110V model); kW requirement 0,7 kW
• Motor 0,18 kW with brake

• Wide=670 mm, Deep=570 mm, Height=2500 mm
• Leave free space about half meter every side of tester
• Table location right side
• Weight about 275 kg
• Note these things when design layout, transport tester and install tester

Using the Drop Tester

• Calibration of the drop tester
  • Before the test cycles, the tester is calibrated to meet the requirements of chosen test method. The calibration is done using the acceleration sensor and PC oscilloscope. Oscilloscope is using acceleration sensor to measure the shock. During the calibration normally three parameters are being observed: peak acceleration, pulse duration and pulse shape.

• Calibration of the drop tester
  • These can be monitored in the PC oscilloscope user interface and the results are also logged in a data file for further analysis. The analysis is done using specific data processing software delivered with the drop tester and the PC oscilloscope (Drop Converter Software).
  • The specifications for measured parameters