GW Instek SFG-2000 Series - Manual (Page 25)

APPLICATION EXAMPLES
49
Speaker Driver Test
Description Use SFG-2000 series for testing the frequency
characteristics of audio speakers. Record the volt reading
versus the input signal frequency.
Block diagram
Graph The peak voltage occurs on the resonant frequency of
the speaker.
Frequency (Hz)
Peak of Audio Drive Response
Correspondent
Response (dB)
SFG-2000 Series User Manual
50
Sweep for Speaker Test
Description Use the sweep feature in SFG-2000 series for testing the
frequency response of an audio speaker.
Test
description
1. Set SFG output to sine wave, 20Hz.
2. Activate sweep and set LIN/LOG, sweep time, and
sweep span.
3. Change the frequency if other bands need to be
tested.
Block diagram
SFG series
Speaker Amplifier