User`s guide

12
cpo
science
0.0
f
p
#
I
1 2 BA
Freq.
m
4.7500
f
B
Hz
Hz
9.2500
f
A
+4.500
f
AB
Hz
Δ
3.7500
7.5000
-3.750
Photogate B
Photogate A
Time from photogate A
to photogate B
T
AB
0.0
f
p
#
I
1 2 BA
Interval
m
0.0089
t
B
s
s
0.0122
t
A
0.3255
t
AB
s
With two photo-
gates attached,
the DataCollec-
tor displays the
difference be-
tween the signals
(Δf
AB
, ΔT
AB
, or ΔN
AB
In frequency,
period, or count
functions, the
currently
displayed value
can be held
by tapping the
memory icon
Period Function
The period of a connected signal is measured and displayed in seconds� In order to correct for inac-
curacies when using a photogate, the period displayed is an average of the previous two breaks of the
photogate beam� As a result, the DataCollector will not begin displaying the period until the beam of
the photogate has been broken three times�
Count Function
The DataCollector can keep a count of how many times the beam of a photogate is broken, up to a
maximum of 19,999�
Frequency Function
The DataCollector is able to measure and display frequencies from 0�1–19,999 Hz, either from teh
photogates—how often the beam is broken by an object—or from a direct source such as the Sound
& Waves machine�