11
"REL" symbol appears on LCD. The secondary
display will show the percentage of relative value
REL%
The REL% = (present value - initial value) / initial
value * 100%.
Press
REL%
key again to show the current
readings on primary display and the "REL" symbol
will be blinking. The percentage range is from
-99.9% ~ 99.9% when the present value is larger
than double of initial value, the "OL%" indication
will be shown on the secondary display.
During relative measurement, analog bar is
always indicating the present measurement
value but not the relative value.
6. Open / Short calibration
1) Press
CAL
key larger than 2 seconds to start the
open / short calibration procedure.
2) In open calibration mode, the secondary display
will show "Open". There are two ways for open
state input:
a) When using square terminals, the square
and the air
(shown in figure 4);
terminals
L
CUR /
L
POT /
H
POT /
H
CUR
terminals hang in
5. Relative mode
During relative measurement the meter remembers
the current readings on primary display (called
initial value) when pressing the
REL%
key, and
12
b) When using insert
the black and red testing lines with alligator clip
into the " "," ",terminal and "
terminal respectively. Connect the mouth of clips
(shown in figure 7).
L
CUR /
L
POT /
H
POT /
H
CUR
terminals
L
CUR
L
POT
CUR
H ", "H
POT
".
a) When using square terminals, insert the short
soket to the square terminal and make
terminals hang in the air
(shown in figure 6);
L
CUR /
L
POT /
H
POT /
H
CUR
b) When using insert
the black and red testing lines with alligator clip into
the " "," ",terminal and "
respectively. (shown in figure 5).
H
CUR
terminals
POT
L
CUR /
L
POT /
H
POT /
L
CUR
L
POT
H ", "H terminal
CUR
GUARD
GUARD
INPUT
Rx Lx Cx
L
CUR
L
POT
H
POT
H
CUR
GUARD
GUARD
INPUT
Rx Lx Cx
L
CUR
L
POT
H
POT
H
CUR
Figure 4
Figure 5
3) Press
CAL
key and the 30-second countdown
will be shown on LCD panels. If the open
calibration is finished, the PASS or FAIL symbol
will be shown on the primary display. Press
CAL
key again to save the calibration data
and enter into the short calibration mode.
4) In short calibration mode, the secondary
display will show "Srt". There are two ways for
short state input:
