UEi Test Instruments DMEG3 - Manual (Page 3)

1. Power Switch: Turns instrument power off and on.
2. Rotary Function Select Switch: Selects measurement
mode and scale.
3. Press to Test: Press this button down to initiate any
measurement function. Turn to the right while pressing to
lock the button into the test mode.
4. Resistance Null Adjust:
(DMEG3) Used to adjust meter to indicate 0.00 ohms with the
function select switch in the continuity position, the red and black
leads clipped together and the “Press to Test” button pressed.
(IRT3) Used to pre-adjust needle movement to 0 volts (infinite
ohms) prior to use. Or you can adjust meter to indicate 0 ohms
on the green scale with the function select switch in the continuity
position, the red and black leads clipped together and the
“Press to Test” button pressed.
IRT (Fig 1)
• Red light indicates that the “P ress to Te s t” switch is pressed
• Voltage is tested without pressing “P ress to Te s t” switch
DMEG3 (Fig 2)
• Green light indicates that the ON - OFF switch is turned on
• Orange indicates high voltage is being generated by the
Megohmeter for insulation resistance testing
NOTE: If the measured value exceeds the meters range, a “l_ _” will
be shown in the display.
CAUTION!
Live Circuit Indicator - Indicates that live voltage is present on the
test leads. The ONLY measurement you can take is AC Voltage if this
light is lit.
CAUTION!
If any of the above conditions occur, DO NOT attempt to remove the
meter leads from the circuit under test. The leads, meter, or circuit
under test may have degraded to the point that they no longer provide
protection from the voltage and current applied. If any of these erro-
neous readings are observed, disconnect power immediately. Recheck
the physical condition of the test instrument, equipment and all settings
and connections.
International Symbols
C o n t rols and Indicators
3
DMEG3/IRT3-MAN P. 2
(IRT3)
(DMEG3)
4
2
1
4
( Fig 1)
(Fig 2)
Analog Display (IRT3)
LCD Display (DMEG3)
Live circuit Power ON