138 B e a t
F r e q u e n c y
Data Collection
1.
Press
and
to turn on the Left and Right Output Channels.
Describe what you hear.
2.
In the chart on the next page, write the frequencies of the Left and Right
Output Channels ( f
left
and f
right
).
You will use the GLX’s Stopwatch screen to time the beat period. Since it is not
practical to measure the very short time between two beats, you will time 10 full
beat cycles and later divide by 10 to calculate the period. Start timing on beat
“zero” and stop timing on beat “ten,” as illustrated below.
3.
Press
to return to the Home Screen; use the arrow keys to highlight
Stopwatch and press
.
4.
Count the beats, “zero, one, two, three, …, ten.” Press
on beat “zero”
to start timing. Press
again on beat “ten” to stop timing.
5.
Write the elapsed time of 10 cycles in the chart below.
6.
Press
to reset the Stopwatch.
7.
Press
to return to the Home Screen; use the arrow keys to highlight Out-
put and press
.
8.
Use the arrow keys to highlight the Frequency of the Left Output Channel.
9.
Press
twice to increase the Frequency by 0.2 Hz.
10. Record the Frequencies of the Left and Right Output Channels in the next
line of the chart.
11. Repeat steps 3 through 10 until you have written data in 6 lines of the chart.
F1
F3
one
zero
two
four
three
five
seven
six
eight
ten
nine
Audible
Sound
Level
Count:
beat period
10 beat cycles
F1
F1
F2
+
Summary of Contents for Xplorer GLX
Page 4: ......
Page 6: ......
Page 7: ...Part 1 Users Guide...
Page 8: ......
Page 18: ...12 O v e r v i e w o f t h e G L X...
Page 94: ...88 S e t t i n g s S c r e e n...
Page 98: ...92 P r i n t i n g...
Page 104: ...98 O p e r a t i n g T e m p e r a t u r e...
Page 112: ......
Page 116: ...110 C a l o r i m e t r y...
Page 132: ...126 V o l t a g e v e r s u s R e s i s t a n c e...
Page 136: ...130 I n d u c e d E l e c t r o m o t i v e F o r c e...
Page 146: ...140 B e a t F r e q u e n c y...
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