Sensitivity switches (Items 1.3 and 1.4)
The required sensitivity, i.e. the gain of the receiver unit, is set in dB at the sensitivity switches, coarse and fine. The gain variation range is 69.5 dB in stages of 0.5 dB. The displayed values are relative values.
Since the overall sensitivity is also determined by the primary current, frequency and coil inductance in addition to the receiver gain, display of the absolute gain values has been consciously dispensed with.
The mathematical relationship between sensitivity E, measured in dB, and the ratio of the output voltage to the input voltage is as follows:
