NARDA IDA, Operating Manual, Page: 126 / 292

6 Common Functions
118
IDA - 3106 Narda
6.13 Demodulating signals (Audio)
Direction Finding • Audio
Spectrum • Audio
Level Meter • Audio
The optional Audio function is used to stream demodulated signals over
Ethernet or to demodulate analog modulated signals in the device so that
you can listen to them using the built in loudspeaker or headphones. You
can also record and save the demodulated signal with the Demodulation
Recorder.
6.13.1 Demodulation types (Demodulation)
Direction Finding • Audio
Spectrum • Audio
Level Meter • Audio
The following demodulation types are available:
• FM: frequency modulation
• AM: amplitude modulation
• CW: Continuous wave
• LSB: lower side band
• USB: upper side band
The types displayed in the selection window depend on the selected
resolution bandwidth RBW / CBW:
• FM, AM, CW: up to 200 kHz max.
• LSB, USB: up to 16 kHz max.
CW demodulation is used to demodulate clocked carrier signals (Morse
signals) and generates a 1 kHz sinewave when the carrier signal is active.