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The Gadget Queen DT-830B User Manual

Digital multimeter dt-830b the gadget queen
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Operating instructions

AC voltage measurement

- Connect the red lead to "VΩmA" jack and the black test lead to the "COM" jack.
- Set the rotary switch at the desired V~ position.
- Connect the test leads across the source or load being you want to measure and
read the voltage value on the LCD display.

DC voltage measurement

- Connect the red test lead to the "VΩmA" jack and the black test lead to the "COM"
jack.
- Set the rotary switch at the desired position. If the voltage to be measured is not
known, set the range switch at the highest range position and then reduce it until a
satisfactory resolution is obtained.
- Connect the test leads across the source or load being measured. Read the voltage
value and polarity on the LCD display.

DC current measurement

- Connect the red test lead to the "VΩmA" jack and the black lead to the "COM" jack.
For measuring currents between 200mA and 10A, insert the red lead into the "10A"
(unfused) jack.
- Set the rotary switch at desired position.
- Open the circuit in which the current is to be measured, and connect test leads in
series with the circuit.
- Read the current value on the LCD display along with the polarity of red lead
connection.

Resistance measurement

- Connect the red test lead to "VΩmA" jack and the black lead to "COM" jack. The
polarity of red lead is positive "+" in this mode.
- Set the rotary switch at desired range position.
- Connect the test leads across the resistance to be measured and read the LCD
display.
Note: If the resistor being measured is connected to a circuit, turn off power and
discharge all capacitors before applying measurements!

Transistor test

Before attempting to insert transistors into the socket for testing, always be sure
that test leads have been disconnected from any measurement circuits. Also,
components should not be connected to the hFE socket when making voltage
measurements with the test leads!
- Set the rotary switch to the "hFE" position.
- Determine whether the transistor under testing is NPN or PNP type and locate the
emitter, base and collector leads.
- Insert the leads into the proper holes of the hFE socket on the front panel.
The Gadget Queen (www.thegadgetqueen.com.au)
Digital Multimeter DT-830B
Page 1

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Summary of Contents for The Gadget Queen DT-830B

  • Page 1: Operating Instructions

    Digital Multimeter DT-830B Operating instructions AC voltage measurement - Connect the red lead to "VΩmA" jack and the black test lead to the "COM" jack. - Set the rotary switch at the desired V~ position. - Connect the test leads across the source or load being you want to measure and read the voltage value on the LCD display.

  • Page 2: Diode Test

    Digital Multimeter DT-830B The multimeter will show the approximate hFE value at the condition of base current 10µ A and a Vce of 3V. Diode test - Connect the red test lead to "VΩmA” jack and the black lead to the "COM” jack.
  • Page 3 Digital Multimeter DT-830B 200V 100mV ±0.5% of rdg ± 2 digits 1000V ±0.8% of rdg ± 2 digits Input impedance: 1MΩ Maximum input voltage: 1000V DC or 750V rms (200mV scale: 500V DC or 350V AC rms) Note: some models will have a maximum DC input voltage of only 600V with an overload protection of 250V RMS AC for the 200mV range and 600V DC or RMS AC for other ranges.

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