Jasco 50952 Instruction Manual

Jasco 50952 Instruction Manual
 MULTIMETER
INSTRUCTION MANUAL
WARNING: READ AND UNDERSTAND THIS MANUAL
BEFORE USING GE MULTIMETER. FAILURE TO
UNDERSTAND AND COMPLY WITH WARNINGS AND
OPERATING INSTRUCTIONS CAN RESULT IN SERIOUS
OR FATAL INJURIES AND/OR PROPERTY DAMAGE.
CAUTION:
This meter must be used with test probes No. TP004
supplied with the meter.
WARNING: THESE SERVICING INSTRUCTIONS ARE
FOR USE BY QUALIFIED PERSONNEL ONLY. TO REDUCE
THE RISK OF ELECTRICAL SHOCK, DO NOT PERFORM
ANY SERVICING OTHER THAN THAT CONTAINED IN
THE INSTRUCTION MANUAL UNLESS YOU ARE
QUALIFIED TO DO SO.
Made in China
E is a trademark of
General Electric Company
and is used under license to
Jasco Products Company LLC,
311 NW. 122nd Street,
Oklahoma City, OK 73114
www. jascoproducts.com
50952-2 rev. 2/06/06
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200 77». a
Before operating your multimeter, become familiar with each control. A clear
understanding of how your multimeter works will help to avoid mistakes and
minimize measurement errors, instrument damage and the possibility of injury.
The following section describes the functions of your multimeter (see illustration).
1. Function/Range Switch - rotary control located in the center of your
multimeter, used to select the function, as well as the desired range.
2. Display - color-coded pointer scales with mirrored back. Includes: OHM (€2),
AC/DC, AC 10V and battery testing scales.
3. Positive Jack - plug-in connection for red (positive) test lead.
4. Negative Jack - plug-in connection for black (negative) test lead.
5, Zero © Adjustment Switch - Stabilizes the pointer to “0” when making
() measurements.
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SPECIFICATIONS:
Function Range Accuracy sensitivity
DCV 10 V / 250 V / 500 V + (4% of full scale) 2 KQN
ACV 10V/250V/500V + (5% of full scale) 2 KQN
DC À 500 uA / 10 mA / 250 mA
Q x1K/x100/x10 (1 meg max)
Battery Test: 1.5 V cell 115 mA load current
9.0V cell 7.5mA load current
Power: 1x 1.5 V “AAA” cell battery
Fuse: 0.5 À 250 V type 5a x 20 mm
Dimensions: 105 mm x 64 mm x 35 mm
INSTALLING AND REPLACING BATTERY AND FUSE
CAUTION: Before attempting to install or replace battery, disconnect test leads
from active circuits to avoid electrical shocks.
To install and replace battery, loosen the screw on the meter back and remove
It, exposing the battery compartment. Install or replace one 1.5V "AAA" cell
battery and reattach the back securely.
To replace a fuse, remove the back cover, exposing the burnt-out fuse. Replace
old fuse with a 0.5 A 250 V type 5a x 20 mm fuse. Reattach back cover securely.
+ (4% of full scale)
SECHATHG INSTRUCTIONS
The GE Multimeter is designed for hobby enthusiasts and home technicians.
Equipped with 6 functions and 14 ranges, each test position is easily selected by
turning the Function/Range switch. For accurate readings, keep your multimeter
laying flat on a non-metallic surface and look at the scale from the point of view
where the pointer and its reflection on the mirror come together. For best results,
use a range selection in which the dial pointer is in the upper 1/3 of the multimeter
scale. Before testing, ensure that the dial pointer rests directly over the “0” at the
left side of the scale. Use the screw in the lower center of the multimeter face to
bring the dial pointer to “0.” To avoid battery drain, set Function/Range switch to
“OFF when not in use.
WARNING: To avoid electrical shock and/or damage to your multimeter, do not measure
voltage that exceeds 500 DC V or 500 AC V peak above earth ground. Before using
your multimeter, inspect leads, connectors and prods for cracks or breaks.
DC VOLTAGE MEASUREMENT (DC V)
1. Connect the red test lead to the “positive” jack and the black test lead to the
“negative” jack.
2. Set the Function/Range switch to the desired DC V position. If the magnitude
of value is unknown, set the Function/Range switch to the highest range and
reduce until desired reading Is obtained.
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3. Touch the test prods to the circuit or device being measured, and read the
voltage value on the black AC/DC voltage scale.
DC CURRENT MEASUREMENT (DCA)
1. Connect the red test lead to the “positive” jack and the black test lead to the
“negative” jack.
2. Set the Function/Range switch to the 250 mA DC A position.
3. Remove power from the circuit being measured and then open up the circuit
at the point where you wish to measure the current.
4, Touch the black test prod to the “negative” side of the circuit and the red test
prod to the “positive” side of the circuit.
5. Apply power to the circuit being measured, and read the current on the black
MÁ scale.
AC VOLTAGE MEASUREMENT (AC V)
1. Connect the red test lead to the “positive” jack and the black test lead to the
“negative” jack.
2. Set the Function/Range switch to the desired AC V position.
3. Touch the test prods to the circuit or device being measured, and read the
voltage value on the black AC/DC voltage scale. If you are operating on the
10V AC range, read the voltage on the red 10 V AC scale.
RESISTANCE MEASUREMENTS (Q)
1. Connect the red test lead to the “positive” jack and the black test lead to the
“negative” jack.
2. Set the Function/Range switch to the x 10 Q position. To ensure the dial
pointer 1s set to “0” on the top OHM (green) scale, touch the test prods together
and use the zero Q ADJ switch until the pointer stabilizes at “0”.
3. If the resistance being measured 1s connected to a circuit, turn the power off
and discharge all capacitors before attaching the test prods.
4, Touch the test prods across the circuit being measured, and read the resistance
value on the green OHM scale. Multiply the reading by 1000, 100 or 10, depending
on the range you are using.
BATTERY TEST
1. Connect the red test lead to the “positive” jack and the black test lead to the
“negative” jack.
2. Set the Function/Range switch to the type of battery to be tested.
3.Touch the red test prod to the (+) terminal of the battery and the black test prod
to the (-) terminal and read the result on the BAT scale. If the pointer is in the red
“replace” zone, the battery needs to be replaced. If the pointer is in the green
“good” zone, the battery is charged. If the pointer is in the white zone, the
battery power Is low and should be replaced.
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