− 7 −
Correct measurement may not be performed when using the tester
in a ferromagnetic/intense electric field such as a place near a
transformer, high-current circuit or a radio, or when measuring a
circuit containing a large amount of harmonics such as an inverter.
5-1 Start-up Inspection
Check the following items before starting the daily measurement work.
• Appearance check : Check the appearance of the tester to see
if it is free from damage caused by falling, etc.
• Accessories : Check that the test leads are free from
irregularities such as wire disconnection and crack.
• Batteries : Install the batteries before using the tester for the
first time. If the Battery Monitor indicates a single blinking
symbol
, replace the batteries with new ones.(see
6-4
)
* If nothing is displayed, the batteries may be exhausted totally.
• Also check that the meter and your hands are not moistened
by water, etc.
5-2 Voltage Measurement : AC/DC V
1. Never input signals exceeding the maximum rated input
value (see
1-3
).
2. Use test leads suitable for the measurement category of the
object measured.
When the measurement categories differ between the main unit
and test leads, the lower measurement category will be applied.
* Do not attempt to measure a voltage using the hook probe
(TL-5K-H) because the large area of the metal-exposed
part is dangerous.
This function is capable of distinguishing the input between an AC
voltage (ACV) and DC voltage (DCV) automatically.
Function Measurement range
Accuracy
Note
ACV
30-1000 V
±(3%rdg+2 dgt) Input over 1000 V
causes “OL” to be
displayed and the
buzzer to beep.
DCV
30-1000 V
±(3%rdg+2 dgt)
* The accuracy-guaranteed frequencies of ACV are 50/60 Hz.
CAUTION
WARNING