3
IV.Presentation Of The System
~220V
：
Power switch, machine power input, AC socket, safety and switch.
：
Earthed terminal
，
used for whole instrument earthing,for safety protection.
I+
、
I-
：
Current output terminals ,I+ is the positive current; I- is the negative current.
V+
、
V-
：
Voltage input terminals, V+ is the positive voltage;V- is the negative voltage.
RS232:
Universal series interface, can controlled by computer;
USB:
Can output the testing results to USB.
Fan
：
Air outlet
V.Instrument Operation Instruction
1
、
The boot interface is shown in figure 1
：
