Internal Battery Condition; Dc Voltage Measurement - Kopp GMT-12A Manuel D'utilisation

Internal Battery Condition

Before making resistance or continuity tests, check the condi-
tion of the internal battery. First turn the function/range switch
to the ohms Rx1K position. Short the test leads together and
the needle indicator should defl ect to the right side of the
scale. Keep the test leads shorted together while simultane-
ously turning the zero ohms adjustment dial until the needle
indicator reads zero at the right side of the ohms (green) scale.
If the needle will not zero, replace the battery with a new 1.5
volt AA size battery (see Battery Replacement).

DC Voltage Measurement

1) Fully seat the test leads in the correct input jacks, (-) black
lead, (+) red lead.
2) Set the function/range switch to the appropriate DC voltage
range. If the voltage is unknown, use the highest range. If
the voltage applied falls within the range of a lower setting,
reset the function/range switch to the appropriate setting
for greater accuracy.
3) If the polarity of the circuit to be tested is known, touch
the black test lead to the neutral side. If the polarity is
unknown, touch the test leads to opposite sides of the
circuit. If the needle indicator defl ects to the left of the
scale, reverse the test leads.
Use the chart below as a guide to reading DC voltage measu-
rements:
DC V range setting
10
50
250
500
Read following
scale
0-10
0-50
0-250
0-50
11
and multiply
reading by:
1
1
1
10