GenBoard/Manual/WideBandHardwareTest (2020-04-06 04:26:28)

Procedure to calibrate or recalibrate your WBO2 controller built-in to VEMS V3

See GenBoard/Manual/WideBandDualWboHardware for 2nd channel wideband controller if needed (irrelevant for 1st channel).

These are normally done during v3 assembly. It can be useful for debugging if something is wrong. Check WBO2 + supply and other wiring (the most common mistakes).

wbo2_pump_pw_zero and wbo2_nernst_dc_target board calibration values are the results from these adjustments

Note: the following information is required for any WBO2 related question: wbo2 values (pump zero dutycycle, nernst dc target), controller serialnumber (preferrably also orderid), sensor resistance (Ohm measured between pin2 and pin6), acquired wbo2 calibration value.

wbo2controller_test.png

Verify Pump-

Measure Pump+ and Adjust Pump-pw-zero

Verify Heater

Nernst-DC target

Quick Reference

DVM -DVM +Expected Val.Var to ChangeNotes
GNDpump-+4V (3.85-4.15V) Just verify
pump-pump+-4mV to +4mVpump_pw_zeroWBO2 off
pump-nernst+450mVwbo2_nernst_dc_targetWBO2 on