Initialize driver with InitWithOptions and use "DriverSetup=Model:2306"
ke230x_InitWithOptions("GPIB::10::INSTR",
VI_FALSE,
VI_FALSE,
"Simulate=0,RangeCheck=1,QueryInstrStatus=1,Cache=1,DriverSetup=Model:2306", &vi);
DriverSetup you can specify in MAX too. Every Virtual Instument has Driver Options entry. In max use only "Model:2306" without quotation marks.
When you don't specify Model in Option String or you skip ID Query, driver does not detect instrument and default instrument is KE 2302.
2) What does instrument return for "*IDN?" in VISA interactive Control?
Zdenek