VXi VT1422A 사용자 설명서

Below is an example VXIplug&play command sequence. Note that this is 
not executable; it has been simplified for easier reading. The C++ example 
source file (tcpost.cpp) is on the CD supplied with the instrument. View the 
readme.txt file provided with the VXIplug&play driver for example 
program file location.

/* set up reference thermistor measurement
   note that ch 10006 is excitation voltage, 10007 is thermistor voltage */
errStatus = hpe1422_cmd(vi, "sens:ref:post ther,5000,(@10006),(@10007)");

/* set function to temperature on channels 10000-10005 */
errStatus = hpe1422_cmd(vi, "sens:func:temp:post TC,J,(@10000:10005)");

/* associate TC channels with reference thermistor channel */
errStatus = hpe1422_cmd(vi, "sens:ref:chan:post (@10007),(@10000:10005)");

/* optionally set VT1529B input filters (2, 10 or 100 Hz) */
errStatus = hpe1422_cmd(vi, "inp:filt:freq 10,(@10000:10005)");
errStatus = hpe1422_cmd(vi, "inp:filt:stat on,(@10000:10005)");

/* set up the scan list to include the TC, thermistor and excitation channels */
errStatus = hpe1422_cmd(vi,"rout:seq:def (@10000:10007)");

/* set up the trigger system to make one scan for each trigger.
   Note that the default is one scan per trigger and trigger source
   is TIMer, so we only have to INITiate the trigger system to
   take readings.
errStatus = hpe1422_cmd(vi,"trig:coun 1");     /* *RST default */
errStatus = hpe1422_cmd(vi,"trig:sour tim");   /* *RST default */
errStatus = hpe1422_cmd(vi,"arm:sour imm");    /* *RST default */

/* set up the sample timer. This controls the channel-to-channel scan
   rate and can be important when channels need more than the default
   40 us sample time. */
errStatus = hpe1422_cmd(vi,"samp:tim 40e-6");  /* *RST default */

/* INITiate the trigger system to execute a measurement scan */
errStatus = hpe1422_cmd(vi,"init:imm");

/* retrieve one scan’s data from the FIFO */
errStatus = hpe1422_readFifoPost_Q(vi, 1, 0, 65024, f64_array);

With the VT1529B, low- or high-level dc voltage measurements can also be 
made for sensors such as LVDT and string pots. While the VT1422A does 
not provide built-in engineering units conversions for these sensor types, 
custom EU conversions can be provided by the user.

If a custom EU conversion is provided on a high-level dc voltage path, use 
the SENSe:FUNCtion:CUSTom:HVOLtage command. Also see the 
DIAGnostic:CUSTom:MXB command for specifying the custom 
conversion parameters.