012-04568D
5/94
$1.00
Instruction Sheet
for the PASCO
Model CI-6504
LIGHT SENSOR
USE PASCO
FIBER OPTIC PROBE
LIGHT
SENSOR
PASCO
SERIES
6500
INTERFACE
SYSTEM
CI-6504
LIGHT SENSOR
FOR USE WITH PASCO SERIES 6500 INTERFACES
USE PASCO
FIBER OPTIC PROBE
MAX
LIGHT
SENSOR
MIN
PASCO
SERIES
6500
INTERFACE
SYSTEM
Introduction
SENSITIVITY
ADJUST
Attaching the Fiber Optic Probe
Setup Procedure
The PASCO Model CI-6504 Light Sensor is designed to
be used with a PASCO Computer Interface (e.g. Series
6500, Mac65, etc).
The light sensor includes a fiber optic probe and an
electronics module containing an amplifier and a selenium photocell. The photocell allows the Light Sensor to
make measurements of relative light intensity. The range
is 1-300 lux. Spectral response peaks at 575 nm.
Additional Equipment Required:
• Signal Interface, [AI-6501 (Apple®II), CI-6500
(IBM PC®), CI-6550 (Macintosh®)]
Additional Equipment Recommended:
• Light Source, PASCO Model SE-9473
➤ NOTE: Use care when handling the probe. The
optical fibers inside may be damaged if the cable is
bent sharply. Do not coil tighter than a 4 inch circle.
Be sure not to damage the input end of the probe.
Scratches may impair light transmission. Scratched
or dirty probe ends may be cleaned up by grinding
the damaged end of the probe lightly on a fine
grinding stone. Probe ends may also be cut off
square with a sharp single edged knife.
➀ Insert the 8-pin DIN plug into Analog Channel A, B,
or C of the PASCO Signal Interface.
➁ Attach the Fiber Optic Probe by slipping the connector of the fiber optic probe over the LIGHT
SENSOR input connector on the Light Sensor as
shown above. A quarter twist clockwise locks the
probe to the Light Sensor.
© 1992 PASCO scientific
This instruction sheet written/edited by: Dave Griffith
better
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
Phone (916) 786-3800 • FAX (916) 786-8905 • TWX 910-383-2040
ways to
teach physics
012-04568D
➂ Adjust the sensitivity of the sensor using the SENSI-
Equipment must be properly packed to prevent damage
and shipped postage or freight prepaid. (Damage caused
by improper packing of the equipment for return shipment will not be covered by the warranty.) Shipping
costs for returning the equipment, after repair, will be
paid by PASCO scientific.
TIVITY ADJUST knob. You can use the interface
software to calibrate the sensor. Place the sensor as
close to the light source as possible, or as close as it
needs to be for the particular experiment. Turn the
sensitivity adjust knob toward “MAX” until the sensor
produces a maximum voltage of about 9.9 V.
Equipment Return
➤ NOTE: If the light source is dim, or the sensor
must be held away from the light source, the
maximum voltage might not reach 9.9 V. The
sensor's highest voltage reading corresponds to a
“100%” relative intensity. For the second point,
cover the sensor opening on the box (or cover the
end of the fiber optic probe), and confirm that the
sensor produces a voltage of about zero. This
voltage corresponds to a “0%” relative intensity.
Should this product have to be returned to PASCO
scientific, for whatever reason, notify PASCO scientific
by letter or phone BEFORE returning the product. Upon
notification, the return authorization and shipping instructions will be promptly issued.
➤ NOTE: NO EQUIPMENT WILL BE ACCEPTED FOR RETURN WITHOUT AN AUTHORIZATION.
When returning equipment for repair, the units must be
packed properly. Carriers will not accept responsibility
for damage caused by improper packing. To be certain
the unit will not be damaged in shipment, observe the
following rules:
Limited Warranty
PASCO scientific warrants this product to be free from
defects in materials and workmanship for a period of one
year from the date of shipment to the customer. PASCO
will repair or replace, at its option, any part of the product
which is deemed to be defective in material or workmanship. This warranty does not cover damage to the product
caused by abuse or improper use. Determination of
whether a product failure is the result of a manufacturing
defect or improper use by the customer shall be made
solely by PASCO scientific. Responsibility for the return
of equipment for warranty repair belongs to the customer.
➀ The carton must be strong enough for the item
shipped.
➁ Make certain there is at least two inches of packing
material between any point on the apparatus and the
inside walls of the carton.
➂ Make certain that the packing material can not shift in
the box, or become compressed, thus letting the instrument come in contact with the edge of the box.
SENSITIVITY
ADJ
R1
2
CW
R3
49.9K 1%
2.2k
2
3
SOLAR CELL
V1
8
V+
U1.A
LF353
V-
4
R2
1
1
R4 50k
ANA IN
1
ANA RET
2
3
P1
DIN PLUG 8-pin
N/C 3
N/C 4
6
2.2k
5
U1.B
LF353
7
GND
5
+12V
6
7
-12V
N/C
N/C
Schematic Diagram
2
8
S
6
1
7
3
8
4
5
2
S