5
Procedure for observing waveform of sound
PREPARATION / SETTING
1. Connect AC adaptor and Microphone to Sound Oscilloscope.
Connect AC adaptor and Microphone to Sound Oscilloscope (Fig.1). Plug AC adaptor into the
jack at the bottom of Oscilloscope and Microphone into BNC input connector at the top of
Oscilloscope respectively (Fig.1).
2. Centering the baseline
Set the switch to the “AC” on the top panel and check if "AC" sign is shown on the menu
display. While switching the microphone on, adjust the baseline coming at the center of the
display by tuning the adjustment knob (Fig.2).
Fig.1
Fig.2
OBSERVATION and MEASUREMENT of Voice Sound
1. How to set the voltage value per one (1) division on the Y-axis:
Press Y-axis (Voltage) button and check if “Voltage value mode” on the Y-axis is selected at
the menu bar at the bottom of the display. Turn the adjustment knob in to 5 mV as the
adequate range for measuring voice sound. Check if "5mV" sign is displayed on the menu bar
(Fig.3).
NOTE: Selectable among 5 mV, 10 mV, 20 mV, 50 mV, 0.1 V, 0.2 V, 0.5 V, 2 V, 5 V, 10 V, and 20 V.
2. How to set the time value per one (1) division on the X-axis:
Press X-axis (time, sec) button and check if “Time value mode” on the X-axis is selected at
the menu bar at the bottom of the display. Turn the adjustment knob in to 2 ms as the adequate
range for measuring voice sound. Check if "2 ms" sign is displayed on the menu bar (Fig.4).
NOTE: Selectable among 24 steps (10 micro sec to 500 sec).
