Table of Contents
Title Page
Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Rotary Switch
Functional Buttons
Display Symbols
Measurement Operation
A. AC & DC Voltage Measurement
B. Measuring Resistance, Diodes,
Continuity & Capacitance
C. Frequency Measurement
D. AC & DC Current Measurement
E. Power Charging
Operation of Hold Mode
The Use of Relative Value Mode
The RESET Button
The SELECT Button
Sleep Mode
General Specifications
Accuracy Specifications
A. AC Voltage
B. DC Voltage
C. Resistance
D. Diode & Continuity
E. Capacitance Test
F. Frequency Test
G. AC Current
H. DC Current
Overview
This Operating Manual covers information on safety and
cautions. Please read the relevant information carefully
and observe all the Warnings and Notes strictly.
Warning
To avoid electric shock or personal injury, read the
“Safety Information” and “Rules for Safe Operation”
carefully before using the Meter.
The Model UT90C (hereafter referred to as “the Meter”)
is a 4000 counts, 3 3/4 digits environment protected auto
ranging electrical tester with stabilized functions, safe
design, and reliable performance.
In addition to the conventional measuring function, such
as DC/AC voltage, DC/AC current, resistance, diode,
data hold and continuity, it is equipped with capacitance
test, frequency test, relative mode and advanced design
of charging power through 220V AC or 12-36V AC/DC
or solar energy. With such design, the Meter can be used
without battery, therefore it will not cause chemical
pollution. This is also a highly applied digital electrical
tester of good performance with full icons display LCD,
overload protection and streamline outlook.
Model UT90C: OPERATING MANUAL
3
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