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Related Manuals for Texas Instruments PGA308EVM
Summary of Contents for Texas Instruments PGA308EVM
- Page 1 PGA308EVM Current Loop Step-by-step example Art Kay 10-18-2023...
- Page 2 Jumper Settings on PGA308 Jumper Setting Loop_Power 4.096V Vref=Fixed/X XTR Vref 1W to ONE Int Vref Vout to XTR Dout Vexc=Vref Auto Auto Vclamp Divider...
- Page 3 Jumper Settings USB-DAQ-Platform JMP Position WP On WP On EE On VDUT...
- Page 4 USB-DAQ-Platform power connections +12V – red/white 12V floating loop supply -12V – positive terminal yellow/white White wire GND – gray 12V floating loop supply negative terminal Green wire...
- Page 5 USB-DAQ-Platform power connections Floating supply These two power INA power supplies cannot share GND Wall supply or DC power supply Ammeter not required but Ammeter useful for debug 9V DC Computer PGA308 USB-DAQ-Platform Test board...
- Page 6 My setup...
- Page 7 Start software Click on calibration tab...
- Page 8 Select precal file Press Load Preset File Press Select Cal Preset...
- Page 9 Select precal file continued 1. Choose pre_Iout_4p096.csv 2. Press Ok...
- Page 10 Make sure pre_Iout_4p096.csv is selected Confirm pre_Iout_4p096.csv is selected.
- Page 11 Enter sensor information & start calibration 1. Enter Offset = 0.5m Span = 5m 2. Press Calibrate...
- Page 12 Calibration process This box will pop up and pause the calibration. Press Ok to continue. The idea behind the pause is that you could adjust the pressure source throughout the calibration. However, in this example the sensor is automatically emulated. Thus, you only need to press Ok to continue at each pause.
- Page 13 Calibration process Throughout the calibration the input and output values will be updated. The progress bar will move to indicate measurements are being made.
- Page 14 Calibration complete The calibration done box will pop up. At this time the output should have been calibrated to 4mA to 20mA...
- Page 15 Optional – Program OTP As an optional step you can program One-Time- Programable memory. This will save the current settings into the PGA308. However, you can do this a maximum of 3 times. After programing the 3 time, you will need to replace the PGA308 device if you want to re-program.
- Page 16 Post calibration Press Measure Post Cal Results to confirm calibration error. This example shows very low error of 0.003%...
- Page 17 Using a programed PGA308 Once the device OTP has been programed, you can test the device using the Block Diagram tab. First set the input signal to the desired input signal. Second, press Set Vin. Finally, press the Read button for Iout.
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