When the two sensors are not 90° apart, the regions sizes are no longer the same, and instead depend on the degree (n) between the sensors. With two sensors that are n° apart, as in Figure 4-6, the sensor output voltage takes the form shown in Figure 4-7. Both of these images use n = 45° as an example. There is no calibration phase, so the peak amplitude is unknown; therefore, an example amplitude is shown. To avoid losing the benefit of two sensors, n cannot approximately equal either 0° or 180°.

Figure 4-6 Two Sensors 45° Apart

Figure 4-7 Two Sensors 45° Apart Uncalibrated Data