Audio Output Mode (Demodulator) - Aaronia NF-5030S Manual

Table of Contents

5.7 Audio output mode (demodulator)

(the DISPLAY MODE status field displays "AM" or "FM")

performs its demodulation only at a specific frequency (center frequency). Thus,

you can selectively „listen" small individual frequency ranges. However, please

note that filtering in this mode is slightly less stringent. As a result, strong signals

on neighbouring frequencies might "bleed" onto the actual selected frequency

and be audible as well.

For optimal audio reproduction of signals, you can choose between several fil-

ter bandwidths by using the up/down arrow keys. The currently selected filter

will be shown in the large INFO display.

5.0 Your first measurement / Modes

All SPECTRAN models offer a so-called demodulator.

This demodulator turns pulsings and modulation of signal

sources into tones.

Frequency-accurate and selective acoustic representati-

on of a signal can be helpful with identification and locati-

on of a signal source. As demodulation occurs in realtime,

it is suited perfectly to find the signal source very quickly.

SPECTRAN offers two different demodulation modes:

AM (amplitude modulation "AM")

FM (frequency modulation "FM").

You can switch between the demodulation modes by

pressing the dot key (the DISPLAY MODE status field

displays " "AM" or "FM").

You can adjust the volume by turning the volume knob on

the left side.

ATTENTION: During audio analysis, the entire display

will be "frozen" and the pixel field is turned off com-

pletely to save computing power for demodulation.

Then ONLY acoustic reproduction of the signal is car-

ried out!

In contrast to simple broadband detectors, SPECTRAN

Table of Contents

Spectran nf