Display Symbols; Measurement Operation; Dc/Ac Voltage Measurement; Dc/Ac Current Measurement - KNOVA KN 8058 Operation

Display Symbols

No. Symbol Meaning
1 Data hold is active.
2 Sleep Mode indicator
3 Indicates negative reading.
4 Indicator for AC measurement
AC
DC
5 Indicator for DC measurement
6 The Meter is in the auto range mode
in which the Meter automatically selects
the range with the best resolution.
7 Indicator for manual ranging mode.
MANU
The input value is too large for
8
OL
the selected range.
9 Transistor testing indicator
hFE
10 Test of diode
11 The continuity buzzer is on.
12 Maximum and Minimum reading.
MAX/MIN
13 Data output is in progress
The battery is low.
14
Warning: To avoid false readings, which
could lead to possible electric shock or
personal injury, replace the battery as
soon as the battery indicator appears.
Sensor test is in progress
15
EF

Measurement Operation

A. DC/AC Voltage Measurement (See figure 2)
Select
figure 2
WARNING
To avoid harms to you or damages to the
meter from electric shock, please do not attempt
to measure voltages higher than 1000V although
readings may be obtained.
When measuring high voltage, take extra care to
avoid electric shock.
1. Insert the red test lead into the V terminal
and the black test lead into the COM terminal.
2. Set the rotary switch to V; DC measurement in
default or press BLUE button to switch between
DC and AC measurement mode.
No. Symbol Meaning
16 The REL is on to display the stored
value minus the present value.
Ω: Ohm. The unit of resistance.
17
Ω, kΩ,
kΩ: kilohm. 1 x 103 or 1000 ohms.
M Ω
MΩ: Megaohm. 1 x 106
or 1,000,000 ohms.
V: Volts. The unit of voltage.
mV.V
mV: Millivolt. 1 x 10-3 or 0.001 volts.
A: Amperes (amps). The unit of current.
μA, mA,
mA: Milliamp. 1 x 10-3 or 0.001 amperes
A
μA : Microamp. 1x 10-6
or 0.000001 amperes
F: Farad. The unit of capacitance.
nF, μF, F : Microfarad. 1 x 10-6
or 0.000001 farads.
mF
nF : Nanofarad. 1 x 10-9
or 0.000000001 farads.
Hz: Hertz. The unit of frequency
in cycles/second.
Hz, kHz,
kHz: Kilohertz. 1 x 103 or 1,000 hertz.
MHz
MHz: Megahertz. 1 x 106
or 1,000,000 hertz.
The unit of transistor
3. Connect the test leads across with the object
being measured. The measured value shows on
the display. Display effective value of sine wave
(mean value response).
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Input amplitude: (DC electric level is zero)
}
Input amplitude:
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Fraquency respouse:
Note
• In each range, the Meter has an input impedance
of 10MΩ except mV range which input impedance
is 3000MΩ. This loading effect can cause
measurement errors in high impedance circuits.
If the circuit impedance is less than or equal to
10kΩ, the error is negligible (0.1% or less).
• When measuring mV, you must press RANGE
manually to enter mV range.
• When voltage measurement has been completed,
disconnect the connection between the testing
leads and the circuit under test, and remove the
testing leads away from the input terminals of
the Meter.
B. DC/AC Current Measurement (See figure 3)
WARNING
Before connecting the Meter to the return
circuit to be tested, cut off the current of the return
circuit.
If the fuse burns out during measurement, the
Meter may be damaged or the operator himself
may be hurt.
Use proper terminals, function, and range for the
measurement.
3
range x 30%
400Hz