STEP BY STEP PROCEDURES:
8
STEP BY STEP PROCEDURES:
7
a.Measuring DC Volts
WARNING!
Do not attempt to make a voltage measurement of
more than 600V or of a voltage level that is unknown.
Instrument set-up:
FUNC
BLACK RED
MIN
MAX
TEST LEAD
TEST LEAD
READING
READING
DCV
COM
V
Ω
1mV
600V
Measurement Procedure:
1.
Disconnect power to circuit to be measured.
2.
Plug the black test lead into the
COM
input jack.
3
Plug red test lead into
V/
Ω
Ω
input jack.
4.
Set rotary switch on 122 to desired range in
DCV
function depending on the voltage to be measured.
5.
Connect the test leads to the circuit to be measured.
6.
Reconnect power to the circuit to be measured.
7.
Read the voltage on the 122.
b. Measuring AC Volts
WARNING!
Do not attempt to make a voltage measurement of more than
1000V or of a voltage level that is unknown.
Instrument set-up:
FUNC
BLACK RED
MIN
MAX
TEST LEAD
TEST LEAD
READING
READING
ACV
COM
V/
Ω
1mV
600V
Measurement Procedure:
1.
Disconnect power to circuit to be measured.
2.
Plug the black test lead into the
COM
input jack.
3.
Plug red test lead into
V/
Ω
Ω
input jack.
4.
Set rotary switch on the 122 to desired range in
ACV
function depending on the voltage to be measured.
5.
Connect the test leads to the circuit to be measured.
6.
Reconnect power to the circuit to be measured.
c. Measuring Resistance
WARNING!
Do not attempt to make resistance measurements with
circuit energized. For best results, remove resistor
completely from circuit before attempting to measure.
NOTE:
To make accurate low ohm measurements, short ends of test leads togeth-
er and record resistance reading. Deduct this value from actual readings.
Instrument set-up:
FUNC
BLACK RED
MIN
MAX
TEST LEAD
TEST LEAD
READING
READING
OHM
COM
V
Ω
1
Ω
2.000k
Ω
Measurement Procedure:
1.
Disconnect power to the circuit to be measured.
2.
Plug the black test lead into the
COM
input jack.
3.
Plug the red test lead into the
V/
Ω
Ω
input jack.
4.
Set rotary switch on the 122 to
2k
Ω
Ω
function
depending on the voltage to be measured.
5.
Connect the test leads to the circuit to be measured.
6.
Read the resistance value on the 122.
d.
Continuity Buzzer
WARNING!
Do not attempt to make continuity measurements with
circuit energized.
Instrument set-up:
FUNCTION
BLACK TEST LEAD
RED TEST LEAD
OHM( )
COM
V
Ω
Measurement Procedure:
1.
Disconnect power to the circuit to be measured.
2.
Plug the black test lead into the
COM
input jack.
3.
Plug the red test lead into the
V/
Ω
Ω
input jack.
4.
Set the rotary switch on the 122 to the position.
5.
Connect the test leads to the circuit to be measured.
6.
Listen for the buzzer to confirm continuity.
e. Data Hold
Press the
DATA-H
button at any time on any function or
range to freeze the reading on the LCD display. This func-
tion is very useful when measuring in locations where the
display is difficult to read.
Standard Accessories
Part No.
9V Battery
A009
Test Lead Set
A040
Rubber Boot (122 only)
A121
Optional Accessories
Part No.
Deluxe Test Lead Set
SDK1C
Microamp Adapter
A112
Temperature Adapter
A301
Carbon Monoxide Accessories
A701/A702/A711
Boot Hook
A120
Soft Carrying Case
A255
Carrying Case for multiple instruments
A901
*These accessories have not been evaluated by UL and are
not considered as part of the UL Listing of this product.
MAINTENANCE
1.
Battery Replacement:
The 122 will display BAT when the internal 9 Volt
battery needs replacement. The battery is replaced as follows:
a.
Disconnect and remove all test leads from live circuits and from 122.
b.
Remove the 122 from its protective boot.
c.
Remove the four screws from back of 122 housing.
d.
Carefully pull apart front and rear instrument housing.
e.
Remove old battery and replace it with new battery.
f.
Reassemble instrument in reverse order from above.
2.
Cleaning your 122
Use a mild detergent and slightly damp cloth to clean the surfaces of 122.
Digital Multimeter 122
Instruction Manual
Test Products International, Inc.
9615 SW Allen Blvd., Ste. 104
Beaverton, OR USA 97005
503-520-9197 • Fax: 503-520-1225
tpiusa@msn.com
Test Products International, Ltd.
342 Bronte Road South, Unit 9
Milton, Ontario L9T5B7
Canada
905-693-8558 • Fax: 905-693-0888
L122M • 12/1/97 copyright © 1998 Test Products International, Inc.
STEP BY STEP PROCEDURES:
9
STEP BY STEP PROCEDURES:
10
