Low Voltage Display; Current Test; Zero; Continuity Check - TESTBOY TV 230 Bedienungsanleitung

Operation
The polarity is shown on the LCD display as follows:
AC: AC symbol lights up
+DC: DC symbol lights up
-DC: - and DC symbol light up
The polarity is indicated with the LEDs as follows (above 120V).
AC: + and - 120V LED are on
+DC: +120V LED is on
-DC: -120V LED is on
If the test probe L2 is applied to a positive potential (negative potential), +DC (-DC) is displayed. The L or R LED may light up
during the voltage test.
When the batteries are empty, only the "dangerous voltage" LED lights up at > 50V AC/DC.

Low voltage display

To enter the low-voltage mode, the on/off function key must be pressed several times until "<10V" appears on the display. In this
mode, voltages from 1 V AC or DC can be measured. The continuity test is not available in this operating mode.

Current test

The On/Off function key is used to enter the current test mode. The A symbol appears in the display. In this mode, alternating cur-
rents between 0.1 A and 200 A can be tested. The current-carrying cable must be placed in the middle of the current clamp opening
at the level of the left and right markings. Only double-insulated cables may be tested. The test probes must be stowed safely. If a
voltage of 6 V is detected between the measuring tips, the unit switches to voltage change mode.

Zero

In current measurement mode, move the tester out of reach of live conductors, press both buttons until the LCD displays "Zero" and
hold until the beeper beeps 3 times.

Continuity check

(Hold test probes together to switch on)
Select the "L Rx" mode with the on/off function key. Place the test probes on the line, fuse or similar to be tested. An acoustic signal
sounds if the resistance is below 20 Ω. The continuity test is carried out in all operating modes except the mode for measuring small
voltages. For resistances up to <500 kΩ, switch to the diode test. An acoustic signal sounds for continuity up to <500 kΩ. When a
voltage of 6 V is detected, the unit automatically switches to voltage mode.

Diode test

If the diode test is selected with the On/Off function key, the "
tested with the two test probes. The continuity indicator lights up and the beeper sounds when L1 is connected to the anode and L2
to the cathode. If the cathode and anode are connected in reverse, no continuity is indicated. If a voltage of about 6V is detected,
the unit switches to voltage mode.

Resistance test

To enter the resistance test mode, press the on/off function key several times until the "Ω" symbol is displayed. Connect the test
probes to the test object. Resistance readings up to 100 kΩ are shown on the display. For resistances below 20Ω, continuity is indi-
cated by means of an acoustic signal. If a voltage of around 15 V is detected, the unit switches to voltage mode.

NCV function

If the On/Off function key is pressed several times, the NCV mode is entered. In this mode, the detection of the E-field can be used
to search for a cable break, for example. The device is held with the sensor against the cable or line. The signal strength is dis-
played on the LCD. The test probes are to be stowed away.

DATA HOLD function

A long press (2 seconds) on the illumination/HOLD key activates the HOLD function and freezes the value. A short beep of the bee-
per indicates the activation of this function. A short press on the "Flashlight/Function" key releases the frozen display. When the
HOLD function is activated, the symbol is displayed on the LCD.

Phase check

Protective clothing and insulating locations can influence the function!
16
" symbol appears on the display. You can test the diode to be
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Testboy TV 230