66
INR
USH
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OPERATION:
High Voltage Warning (HI-V)
The meter beeps and lights an LED when > 30V AC/DC voltage is present
through the test leads of the meter. This enhanced safety feature alerts the user
that dangerous voltage is present across the leads even if the meter is set on an
incorrect function or range.
Notes: This features does not work through the clamp head as the clamp is
intended to only measure current. Audible indication can be turned off by
sliding the switch in battery compartment.
Auto/Manual Ranging Mode
( )
The meter defaults to autoranging mode to automatically select 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 access the mV range or 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.
INRUSH Feature
The INRUSH function captures the starting current precisely in the beginning of the 100-milli
second period. Press the “INRUSH” button to toggle into the INRUSH mode, and the “----”and
“INRUSH” will be displayed. Clamp onto a single conductor and turn on the motor. Read the
INRUSH current on the display. Depress the INRUSH button for more than 2 seconds to exit the
INRUSH mode. Note: Minimum input range: >100 dgts. (66A range unspecified.)
Max/Min Feature
The Max records the maximum vaue measured over time while Min captures the minimum
value measured over time. Press the Max/Min button to activate this feature and to toggle
between Max, Min and MaxMin. “MAXMIN” displays the real time reading while still capturing
max and min values over time. Depressing the max/min button for >2 sec. exits the mode.
Note: To record max/min values over a time period >30 min, the Auto Power Off (APO) feature
must be defeated.
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.
Page 5
INCORRECT
Currents
cancel
CORRECT
Single
Conductor
only
Note: 61-774 model also measures DC Current.
V/
COM
CAT.IV 600V
1000V
750V
CAT.III 1000V
MAX
True RMS
MAX
MIN
HOLD
CAT.IV 600V
1000A
30
0
20
10
40
CAT.III 1000V
61-774
INRUSH
OFF
Ω
1000
1000
A
V
V
A
660
660
ZERO
V/
Ω
COM
CAT.IV 600V
1000V
750V
CAT.III 1000V
MAX
True RMS
MAX
MIN
HOLD
CAT.IV 600V
1000A
CAT.III 1000V
61-774
INRUSH
OFF
Ω
1000
1000
A
V
V
A
660
660
ZERO
H
N
ZERO Feature
(61-774 model only)
The “ZERO” button is used to zero out the display before measuring DC current. Press the
“ZERO“ button to subtract out the non-zero number. Then, measure the DC amps. Pressing the
“ZERO“ button again causes the “ ZERO“ to flash and the original offset number to be
displayed. Depress the ”ZERO“ button for >2 sec. to exit this mode.
Selectable Auto Power Off (APO) Feature
The meter automatically powers itself down after about 30 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 ( ) button 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.
Backlight
Press the button in the middle of the meter to turn the back-
light on and off. The green backlight will remain lit for about
3 minutes before it automatically turns off to conserve
battery power.
Note: Backlight consumes 4x the battery power.
Measuring AC Current (Amps):
Backlight on in
all functions.
ND 4969-4 61-772-774 Ins 1/28/08 7:36 AM Page 5
