Instruction Sheet
for the PASCO
Model ME-9243A
Spark Timer
012-05131B
7/93
$1.00
© 1993 PASCO scientific
ME-9243A
SPARK TIMER
TO SPARK
(Hz)
0.01
0.02
0.04
0.1
0.2
100
50
25
10
5
(sec)
PUSH
RATE
SELECTOR
0.4
2.5
TIME
INTERVAL FREQ
USE THIS RATE
FOR SETUP!
WARNING
HIGH
VOLTAGE!
POWER ON –
RATE INDICATOR
Frequency
selector knob
High Voltage (HV)
cable (1 m)
Ground cable
(1 m)
Power ON LED
(flashes at selected
frequency rate)
Introduction
The PASCO Model ME-9243A Spark Timer provides
accurate, phase-locked sparking at 7 different frequencies.
The spark track is clear and simple, without any double
sparking. The high voltage (HV) cable and the black
ground cable are each 1 meter long. Also included with the
ME-9243A is a 6' long power cord and this instruction
sheet.
Safety Summary
Power source:
This apparatus is intended to operate from a power source
of 90-130 VAC (rms) OR 180-260 VAC (rms), 43-62 Hz.
A protective ground connection by way of the grounding
connector in the power cord is essential for safe operation.
Grounding the Spark Timer:
To avoid electrical shock, plug the power cord into a
properly wired receptacle.
Danger arising from loss of ground:
Upon loss of the protective ground connection, all
accessible conductive parts (including knobs and controls
that may appear to be insulated) can render an electric
shock. Use a power cord that is in good condition.
Use the proper fuse:
To avoid fire hazard, use only a 0.5 A fuse, type 3AG,
rated at 250 VAC.
Do Not Operate in Explosive Atmospheres:
To avoid explosion, do not operate this product in an
explosive atmosphere.
Connect Case Ground to Apparatus Frame Before
Energizing:
Attach the alligator clip end of the black ground cable
to the apparatus being used.
Operating Instructions
Safety:
Refer to the Safety Summary for power source, grounding,
and other important safety matters pertaining to the use of
this equipment. Before connecting the instrument to a
power source, read the following instructions about line
voltages, power cords, and fuses; then verify that the
correct power-input fuse is installed.
