PASCO WA-9867 Sine Wave Generator - Manual (Page 6)

Sine Wave Generator Operation
6 ®
1. Turn the Sine Wave Generator on (if it is already on, turn it off for a second, then back on).
The initial output frequency is 100 Hz.
2. Press the Up Increment key. The frequency changes to 200 Hz. Press it again and it changes to
300 Hz. Press the Down Increment key and the frequency changes back to 200 Hz.
3. Use the Frequency knobs to change the frequency to 220 Hz.
4. Press the Up Increment key; the frequency changes to 320 Hz.
5. Press the Up Increment key several more times so that the output is 720 Hz. Additional
presses of the Up Increment key will do nothing because the output will not exceed 800 Hz.
Setting the Stored Increment
The harmonics of a resonating device (such as a vibrating string or tube) are usually spaced at
equal frequency increments. It is useful to set the Sine Wave Generator’s stored increment to
match your device.
The label below the Up arrow key reads Store/Exit. When you press and hold this key, it will
function as a Store key; the stored increment will change to the value on the display (which is the
output frequency). Try this:
1. Use the Increment keys and the Frequency knobs to set the output to 120 Hz.
2. Press and hold the Store key. After 1 second the display will blink and you can release the key.
The stored increment is now 120 Hz.
3. Press the Up Increment key a few times; the frequency changes by 120 Hz with every press.
This value will remain stored until a new value replaces it or the unit is turned off.
Auto Play
In Auto Play mode you can program the Sine Wave Generator to scan automatically through the
harmonics of a device.
Setup
The label below the Up arrow key reads Play. When you press and hold it, this key will start
automatic play. Try this:
1. Set the stored increment to 120 Hz (as described above).
2. Use the Amplitude knobs to change the output frequency to 60 Hz.
3. Press and hold the Play key. The display will blink to show you that Auto Play has started, and
you can release the key.
4. The Sine Wave Generator will play the starting note (60 Hz), then increment to the next notes
(180 Hz, 300 Hz, 420 Hz, etc.), playing each note for 1.5 seconds. You can use the Amplitude
knob to adjust the output.