JH202(A) computer automatic theader
  The instrument is the amelioration of JH202 which has improved on complete machine's frame,mode and inner lines based on JH202.Its function is as the same as JH202.
  Apply range:circle all kinds of circle for electroacoustic instrument.
Main technic parameter:
 1.Range of cirle control:109000 circles
 2.Precision of circle control: <±1 circles
 3.Range of speed control: The control is devided into 16 sorts.The highest speed4000 circles per minute,and the lowest speed300 circles per minute
 4.cirle control of slow startup:09circles
 5.range of statting count:09999
 6.power supply: 220V±10%50Hz
 7.Tempreture:-10℃~+40