012-06306D
Light Sensor and High Sensitivity Light Sensor
3
1
4
3
5
2
6
7
8
10
1
100
GAIN
1
4
3
5
2
10
1
0
GAIN
Figure 5. Mounting connector and alignment hole
Figure 4. Setting the gain on the Light Sensor
1/4 –20 threaded
connector
alignment hole
LI
GHT
NSO
R
CI-6504A
10
1
100
GAIN
➃
Select
Light Sensor
from the drop-down menu.
➄
Open a display window, such as the Digits display, by
dragging and dropping the appropriate display icon on
the Light Sensor icon.
➅
Select the appropriate gain setting on the sensor box
for the light levels to be measured (Figure 4). The
correct gain setting is the one for which the intensity
levels on the display vary appropriately for measuring
the relative light intensity changes in your experiment.
Calibration and Sensitivity Adjustment in
Science Workshop
➀
To open the Light Sensor's calibration window,
double-click on the Light Sensor icon in the
Experiment Setup window.
➁
If the Light Sensor is in analog channel A or B, you
can adjust the sensitivity (gain) in Science Workshop
by selecting the appropriate level from the drop-down
menu. If the Light Sensor is producing voltage above
1 V, set the sensitivity to
Low (1x)
. If the Light
Sensor is producing voltages b1 V and 0 V,
select
Med (10x)
. With the Science Workshop 700
interface, set the sensitivity to
High (100x)
if the
voltage is very low (b0.1 V and 0 V). Refer
to the User's Guide for Science Workshop for more
details concerning adjusting the sensitivity setting.
➤
Note:
Gain for channel C cannot be adjusted in
Science Workshop. Use Channels A or B if
necessary to adjust gain in Science Workshop.
Adjust the gain
for the light
conditions.
➂
Use the calibration window in Science Workshop to
calibrate the Light Sensor. The sensor may be
calibrated in relative units such as percent of sensor
voltage output. If a standard is used, the Light Sensor
output may also be referenced to absolute units such
as lux. Refer to the User's Guide for Science
Workshop for more details concerning calibration.
Mounting on an Experimental Apparatus
➀
Use the 1/4-20 threaded connector located on the
bottom of the sensor box to secure the Light Sensor to
an experimental apparatus (Figure 5). The alignment
hole fits over an alignment pin included on some
PASCO apparatuses.
DIN Connector Specifications for CI-6504A
1:
analog output
(+), 0 to 5 V
2:
analog output (-),
signal ground
3:
(no connection)
4:
+ 5 V DC power
5:
power ground
DIN Connector Specifications for CI-6604
1:
analog output (+), 0 to 5 V
2:
analog output (-),
signal ground
3:
(no connection)
4:
+ 5 V DC power
5:
power ground
6
: +12 VDC power
7
: -12 VDC power
8
: (no connection)
