User's Manual

Instruction Manual
012-06729D
Time Pulse Accessory
ME-9496
800-772-8700 www.pasco.com
*012-06729*
®
Introduction
The PASCO Time Pulse Accessory is designed to activate the ME-9491Fan
Accessory or the ME-9781 Variable Speed Motorized Cart for a selectable
period of time. Since the Fan Accessory produces an approximately con-
stant force, the Time Pulse Accessory can be used to perform motion stud-
ies of a cart under conditions of constant acceleration for a fixed time
interval. When used with the Variable Speed Motorized Car, the same kind
of studies can be done for constant speed conditions.
Controls
The Time Pulse Accessory has three controls: START, VARIABLE, and
TIME. The TIME control switch is a four-position switch. The selected
time interval is indicated by a small number visible in the “V”-shaped
notch on the switch. The “0” position is a 1 second interval, the “1” posi-
tion is a 2 second interval, “2” position is a 4 second interval, and the “3”
position makes the VARIABLE control knob active.
VARIABLE Control Knob
The VARIABLE control knob is a potentiometer that adjusts the time interval from less than one second to about seven seconds.
Turn the VARIABLE control knob to MIN for the shortest time interval (less than one second) and turn the knob to MAX for the
longest time interval. The position of the knob is approximately proportional to the time interval. For example, when the knob is
halfway between MIN and MAX, the time interval is approximately 3.5 seconds.
Table 1: TIME Control Switch
Position Result
0 1 SEC
1 2 SEC
2 4 SEC
3 VARIABLE
START push
button
TIME control
switch
VARIABLE
control knob
Output plug,
3.5 mm
ME-9496 Time Pulse Accessory
TIME Control Switch settings
Setting number