Instruction Sheet
for the PASCO
Model CI-6742
Motion Sensor II
012-06757B
08/98
$1.00
© 1998 PASCO scientific
Introduction
The PASCO CI-6742 Motion Sensor II is a sonar
ranging device with a sensing range of 0.15 to about 8
meters. When used with an interface, the Motion
Sensor II emits ultrasonic pulses and detects pulses
returned as echoes from the target. The
ScienceWorkshop
program calculates the distance to
the object from the speed of sound and half the sonic
pulse round trip time. The program can also calculate
velocity and acceleration from the distance and time
measurements. The trigger rate for the Motion Sensor
can be set in the
ScienceWorkshop
program to
trigger as few as 5 times per second (for recording
relatively slow events over large distances) or for as
many as 120 times per second (for quick events such
as a free-fall experiment).
The CI-6742 Motion Sensor II has several
improved features, compared to the CI-6529
Motion Sensor:
• reduced minimum distance of operation
• reduced sensitivity to false targets
• front panel LED that lights when the Motion
Sensor acquires the target
• additional mounting and positioning options
• compatibility with Texas Instruments
®
and
Casio
®
scientific calculator-sensor interfaces
• compatibility with ULI interfaces
Important Operating Note: When operating in
the Std. mode, it may be necessary to tilt the
transducer up 5-10 degrees for best
performance, as shown.
yellow phone
plug (Connect to
digital channels
1, 2, or 3.)
black phone
plug (Connect to
digital channels
2, 3, or 4.)
spring clips
Narrow/Std.
switch
target
indicator
LED
ultrasonic
transducer
positioning
dial
