SLAU880C December 2022 – May 2024 ULC1001
The ULC1001 compensates for mechanical variances in the LCS using a sophisticated calibration routine. The calibration routine configures settings for cleaning modes, temperature protection, power monitoring, mass detection, and diagnostics. When calibrating the system, the LCS must be clear of any debris or water and near room temperature (23°C - USER_Params_tempParams_calTemp_C_Q21 can be adjusted). Calibration needs to be repeated anytime there is a change in the impedance of the LCS, such as change in wire length or wire gauge connecting the ULC1001-DRV290x EVM to the LCS.
When the ULC1001 is connected and powered, Calibration Mode must be configured and run first. There are 5 bursts that calibrate different algorithms. The suggested order is burst 0, 5, 1, 2, 3. Each burst is described in Table 4-2. The calibration sequence is shown in Figure 5-7.
| Burst # | Burst Suffix | Description |
|---|---|---|
| 0 | CONTROL_Burst_Cal_DcBias | Calibrates the DC Bias that can appear in the current and voltage sense paths. |
| 1 | CONTROL_Burst_Cal_Region_MassDetect | Calibrates the MassDetect algorithm and updates burst 19. |
| 2 | CONTROL_Burst_Cal_Region_1 | Calibrates a frequency range and updates bursts 8-11 and 16. |
| 3 | CONTROL_Burst_Cal_Region_2 | Calibrates a frequency range and updates bursts 12-15 and 17. |
| 5 | CONTROL_Burst_Cal_Region_Temp | Calibrates the Temperature Constant. Single frequency measurement; Freq_start = Freq_stop. |
The calibration burst can be configured for different types of systems. This user guide lists the setup for a system with two modes of vibration or two frequency ranges.