TH2883 Series Operation Manual Chapter 9 Handler interface
9-7
Figure 9-3 Jumper position on the Handler interface board
As above figure shown, when shipped from the factory, both jumpers are set at the upper position.
If you want to apply the internal power supply, you must set both jumpers at the lower position.
Likewise, when using external power supply to substitute the internal power supply, the two
jumpers should be set at the same time.
Warning: Make sure the instrument has been powered off and the plug has been removed
before opening the case to alter jumper setting.