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ND 6442-1 61-744 61-746 Instructions
OPERATION:
Non-contact voltage (NCV)
With the NCV tab on the tip of the clamp close to an AC voltage, press the NCV but-
ton. The NCV LED will light and the beeper will sound. The closer the NCV tab is to
AC voltage, the louder the beep. To differentiate between hot and neutral in an outlet,
insert the NCV tab into each slot in the outlet. The beeper will be much louder on
the hot side of the outlet than the neutral. The test lead can also be used to differen-
tiate between the hot and neutral. Plug the red test lead into the V/Ω input jack on
the meter. Press the NCV button and insert the probe tip into each slot of the outlet.
The beeper will only beep on the hot side of the outlet.
Auto/Manual Ranging Mode (
)
The meter defaults to autoranging mode when powered on. In this mode, the meter
automatically selects the best range to display the measurement. By pressing the
Range (
) button on the meter, the manual range mode will override the auto-
ranging feature of the meter. A (
) appears in the upper left side of the display.
Continue pressing the Range button until the desired range is obtained. Use this
mode to lock in a specific range for repeated measurements. To return to the
autoranging mode, either depress the Range button for greater than 1 second or turn
the meter off and then back on again.
Data Hold Feature
Press the Hold button on the side of the meter to toggle in and out of the data hold
mode. "HOLD" appears in the upper left of the meter display when data hold is
active. Use the data hold feature to lock a measurement reading on the display.
Press the Hold button again to unlock the display and obtain a real-time reading.
Auto Power Off (APO) Feature
The meter automatically powers itself down after about 10 minutes of no use. Press
any button, and the meter will wake up and display the last reading taken before
power down. This feature can be overridden by holding the Range (
while turning the function switch from Off to any other position. When APO is
defeated, the "APO" will be removed from the display. Turning the meter off will
restore the APO default.
11/13/07
7:30 AM
Page 5
) button
Page 5
Measuring AC Current (Amps):
CLAMP
600V
CAT.III
600A
CLAMP
CAT.III
V
V
61-746
V
V
61-746
Ω
Ω
40
40
A
A
600
600
40
OFF
OFF
A
NCV
NCV
600
True RMS
True RMS
OFF
HOLD
APO
HOLD
APO
AC
AC
DC
DC
K
M
Ω
m
V
A
K
M
Ω
m
V
A
COM
V/Ω
COM
V/Ω
CAT.III
CAT.III
600V
600V
CORRECT
INCORRECT
Single
Currents
Conductor
cancel
only
Measuring Voltage:
CLAMP
600V
CAT.III
600A
V
746
V
Ω
V
61-746
V
Ω
40
A
600
OFF
NCV
True RMS
HOLD
APO
AC
DC
K
M
Ω
m
V
A
COM
V/Ω
CAT.III
600V
AC Voltage
Page 6
H
CLAMP
600V
600V
CAT.III
600A
600A
N
V
61-746
V
Ω
40
A
600
OFF
NCV
True RMS
HOLD
APO
AC
DC
K
M
Ω
m
V
A
COM
V/Ω
CAT.III
600V
CORRECT
Use with
line splitter
CLAMP
600V
CAT.III
600A
V
6
V
Ω
V
61-746
V
Ω
40
A
600
OFF
NCV
True RMS
HOLD
APO
AC
DC
K
M
Ω
m
V
A
COM
V/Ω
CAT.III
600V
DC Voltage
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