Microphones
Many different types of microphones can be used with the Nor145.
The following microphone types are recommended:
General purpose:
Nor1225 Free field
General purpose, prepolarized:
Nor1227 Free field
Polarization voltage:
0 ±1 V or 200 ±1 V selectable
Short-circuit current: <1mA, Impedance: 2 MΩ