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Multi-Cal-PGA309 system

Daeyoun Yun
Prodigy 50 points
Other Parts Discussed in Thread: PGA309

Hi, my name is Daeyoun Yun.
 
I have any questions(PGA309EVM-USB and Multi-Cal-PGA309).
 
First, look at the PGA309EVM-USB evaluation module, I know to make a calibration using the PGA-test board. 
 
If, without using thd test board, what should I do wiring connection when using the real-world pressure sensor(PGA309 built-in)? 
 
Second, always needs RS232 communication of the DMM when the calibration by using the Multi-Cal-PGA309 (I used the Multi-Cal-System = sofrtware)? 
 
Do not have to be calibrated via a wire connection without using an RS232 communication? 
 
Finally the DMM script that is attached to the software, do I want to be a used to modified? 
 
When used without changing the DMM script, the calibration is not performed. 
 
For example,it was confirmedthat the outputvalueof theactualchange, butVoutshown inPC monitordid not change.
 
I look forward to your reply. 
 
Thank you.
  • 0
    TI__Genius 12335 points

    Daeyoun,

    I will try to answer your questions s best I can, but you may need to clarify what you are asking if I do not give an appropriate answer.

    1. Connecting a real world pressure sensor to the PGA309 is shown in Figure 10, on page 17 of the EVM user guide.

    2. Some form of wired communication with the DMM must be used when performing a calibration with the multi-cal system. This communication can be either RS-232 or IEEE 488.2 (GPIB).

    3. The DMM script must be modified to include the com port or GPIB address of the DMM. 

  • 0 in reply to John Caldwell
    Prodigy 50 points

    Hi, John.

    Thank you for your reply.

    In addition,

    1. I have not a pga309 test board. But, I have used sensors that are built in pga309 chip instead.

        Then, what should I do to connect the wiring?

        For example, do I need to connect what number of DAQ platform (J3 or J4 connector) pin and Vout of the real-sensor?

    2. If I am using the RS-232 communication, is there no need to be GPIB address setting?

        In my case, I am using the RS-232 communication and matching the DMM script (com port, baud rate, number of bit, etc).

        But, calibration is failed. And error number is 410 in DMM.

        Error number 410 defined "Query INTERRUPTED". I don't know why such an error has occurred.

  • 0 in reply to Daeyoun Yun
    TI__Genius 12335 points

    Daeyoun,

    You could connect the output voltage of your sensors to pin 5 or pin 7 of J3 on the DAQ platform, these are the inputs to the on-board 16-bit delta sigma ADC. The pin definitions for these connectors is given in the USB DAQ platform manual here: http://www.ti.com/lit/ug/sbou056/sbou056.pdf , table 8 has the pin definitions for J3. 

    If you are using RS-232 communication, you should only need to specify the COM port, the GPIB address setting is not necessary. It sounds as though your RS-232 settings may not match between the meter and the DMM script, I would verify the settings between the two in order to start the debugging process.