The upgrade soft for HA2020S Electroacoustic testing instrument
                          ( [2004-9-18]
Modify parts:
  1.modify the frequency range into a item,and input the starting and ending frequency in the item.
  2.Add the average sensitivety which can show any frequency point of eligible products.
  3.Add the clear key for total number and add the average number clear key for total eligible products.
  4.Add showing testing state.
  5.Modify that under the automatic testing state,the voltage value is not steady when the testing object changes from F0 to polarity.
Operation parts:
  1.Modify the starting and ending frequency:First, intercalate the "E"item of "Freq Range"in the table,then appear a small table;Second, input the starting and ending frequency in the small table by using the number key;and the last press "ESC"to back after finishing inputting.
  2.Modify the "F"item of the setup menu(the switch of whether to show the average sensitivety of the eligible products).After pitch on it,you can modify by using PgUp/PaDn key.
  3.During the testing process,you can clear products' stating data with <shift+F5> key,and the eligible products' average sensitivety with <shift+F7> key,stat it over again.
The upgrade method:
  After the file was downloaded,you can open the compressed file with the zip PKWare,and decompressed it to floppy disk.Put the floppy disk into the floppy drive of the instrument,and finish upgrading by running the "8" file of the floppy disk.The upgrade this time will clear the data saved in the testing instrument.You need to reinstall every testing guide lines such as sound field proofreading,electric proofreading,the upper and the lower limit of sensitivety,output voltage,limit frame etc after fineshing upgrade.