What do we measure?
The BITE functionality is based on element sample data that is received from the transceiver circuitry in the Transceiver Unit. This information is fetched from every individual channel while the ME70 is operating normally.
Each single element in the ME70 transducer is connected to a dedicated channel on a transceiver board. Each of these channels is provided with a transmit/receive switch, which is used to protect the sensitive receiver electronics during transmission.
Due to a voltage divider implemented in the transceiver board hardware, and the software functionality provided on the circuit board, the signals in and out of the transmit/receive switch can be monitored.
•  During transmission, the receiver electronics measure the voltage or current of the transmitted pulse.
•  During receiving, the receiver electronics measure the voltage of the received signal.