8
•
The LCD displays “1” indicating the existing selected range is overload,
it is required to select a higher range in order to obtain a correct reading.
•
In each range, the Meter has an input impedance of approx. 5M
Ω
. This
loading effect can cause measurement errors in high impedance circuits.
If the circuit impedance is less than or equal to 5k
Ω
, the error is negligible
(0.1% or less).
•
When AC voltage measurement has been completed, disconnect the
connection between the testing leads and the circuit under test.
C. DC Current Measurement
Warning
Never attempt an in-circuit current
measurement where the voltage
between terminals and ground is
greater than 60V.
If the fuse burns out during mea-
surement, the Meter may be dam-
aged or the operator himself may
be hurt. Use proper terminals,
function, and range for the mea-
surement. When the testing leads
are connected to the current termi-
nals, do not parallel them across
any circuit.
Figure
3
The DC current ranges are: 2000
µ
A, 20mA, 200mA and 10A.
To measure current, do the following:
1. Turn off power to the circuit. Discharge all high-voltage capacitors.