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- Connect a controller board to the BMS carrier.
- Connect two oscilloscope probes; one between GND and IP and one between GND and IN. Set the oscilloscope to output IP - IN. Alternatively, connect one oscilloscope probe between GND and the LTC6820 IBIAS pin (pin 16).
- Supply 12 V between GND and 12 V.
- Set the CS pin of the LTC6820 being tested low, then high again.
- If the LTC6820 is enabled, there will be a long +1 pulse transmitted between IP and IN, or the IBIAS pin will be set to 2 V.
- Repeat for each SPI.
Relay Capacitor Inrush Current
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