To use an Instrumentation Amplifier with a TI Graphing Calculator and a CBL 2 or LabPro interface, connect your calculator, and Instrumentation Amplifier to the interface and start DataMate. Then do the following:

  1. Choose SETUP from the main DataMate screen.
  2. Press [ENTER] to select CH1.
  3. Choose CUSTOM from the list of sensors.
  4. Choose CUSTOM 0 TO 5 (V). The channel will be set up.

This will give you post-amplification voltages. If you want pre-amplification voltages, continue with these steps:

  1. Choose CALIBRATE.
  2. Choose MANUAL ENTRY.
  3. Type in the slope and intercept from the following choices depending on your knob setting:
Range Slope Intercept
0⚊1 V 0.30864 0
0⚊20 mV 0.006636 0
0⚊200 mV 0.06262 0
±1 V 0.471648 -0.801
±20 mV 0.013181 -0.0224
±200 mV 0.117912 -0.2004

To use an Instrumentation Amplifier with a TI Graphing Calculator and an original CBL , CBL 2 or LabPro interface, connect your calculator, and Instrumentation Amplifier to the interface and start ChemBio. Then do the following:

  1. Press [ENTER] to get to the MAIN MENU.
  2. Choose SET UP PROBES.
  3. Enter 1 for the NUMBER OF PROBES.
  4. Choose ELECTRODE AMP from the list of sensors.
  5. Enter 1 for the CHANNEL NUMBER.
  6. Choose MANUAL ENTRY.
  7. Type in the slope and intercept from the following choices depending on your knob setting:
Range Slope Intercept
0⚊1 V 0.30864 0
0⚊20 mV 0.006636 0
0⚊200 mV 0.06262 0
±1 V 0.471648 -0.801
±20 mV 0.013181 -0.0224
±200 mV 0.117912 -0.2004

NOTE: For post-amplification voltages on any knob setting enter the following slope and intercept:

Range Slope Intercept
ALL 1 0