HL-2A is China’s first Tokamak device with divertor configuration.Mastering the process and plasma parameter changes with time are of great significance to achieve controlled nuclear fusion.In the recent upgrading of HL-2A

for which a higher and faster electronic equipment was required

we developed a new type USB multi-channel time division scaler for HL-2A including functions:USB interface

PC graphical user interface

simul- taneously calibrating more than five channel signals

optional time division spacing 2-50 ms

count rate up to over 2 MHz

accessing all the information 20 s after a activated signal

and processing data and displaying off-line.