= using System; using System.Collections.Generic; using System.Linq; using System.Text; using NationalInstruments.VisaNS; namespace USBPowerTester { class DPit6700 : IDigitalPower { #region IDigitalPower 成员 public bool OpenDevice() { bool flag = true; try { mbSession (MessageBasedSession)ResourceManager.GetLocalManager().Open(resourceName); } catch { flag = false; } return flag; } public void SetVoltage(double voltage) { string str = "VOLT " + voltage.ToString("0.0000"); mbSession.Write(str); } public void SetCurrent(double current) { string str = "CURR " + current.ToString("0.0000"); mbSession.Write(str); } public double GetSetVoltage() { double vol = 0; vol = GetDoubleCmd("VOLT?"); return vol; 

} public double GetSetCurrent() { double cur = 0; cur = GetDoubleCmd("CURR?"); return cur; } public double GetOutVoltage() { double vol = 0; vol = GetDoubleCmd("MEAS:VOLT?"); return vol; } public double GetOutCurrent() { double cur = 0; cur = GetDoubleCmd("MEAS:CURR?"); return cur; } public void SetOutput(bool open) { if (open) mbSession.Write("OUTP 1"); else } mbSession.Write("OUTP 0"); public bool GetOutputStatus() { bool ret = false; string str = mbSession.Query("OUTP?"); if (str == "1\n") ret = true; else ret = false; return ret; } public void CloseDevice() { 

try { mbSession.Dispose(); } catch { } } #endregion private MessageBasedSession mbSession; private string const "USB0::0xFFFF::0x6500::60026501068742XXXX::INSTR"; resourceName = private double GetDoubleCmd(string cmd) { double ret = 0; try { string str = mbSession.Query(cmd); ret = Convert.ToDouble(str); } catch { } return ret; } } } 接口 using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace USBPowerTester { interface IDigitalPower { bool OpenDevice(); 

void SetVoltage(double voltage); void SetCurrent(double current); double GetSetVoltage(); double GetSetCurrent(); double GetOutVoltage(); double GetOutCurrent(); void SetOutput(bool open); bool GetOutputStatus(); void CloseDevice(); } }