Testboy TB 313 - Measure Resistance; Diode Testing Procedure; Continuity Test Guide

Operation
24 Testboy
®
TB 313
DEUTSCH
DEUTSCH
DEUTSCH
Discharge the capacitors before every measurement.
Resistance measurement / Ω
Use the selector switch to set the appropriate range. Insert the black test lead into the ‘COM’
socket and the red test lead into the V/Ω/TEMP/CAP socket. Using the test probes, touch the test
points of the test object. Read measurement value on the display.
Measurement range
Resolution
Accuracy
200 Ω
0.1 Ω
± 1 % + 5 digits
2 kΩ
1 Ω
± 1 % + 5 digits
20 kΩ
10 Ω
200 kΩ
100 Ω
2 MΩ
1 kΩ
20 MΩ
0.01 MΩ
± 1.8 % + 5 digits
- Measuring voltage: 0.25 V.
Diode test
With the selector switch set to " / ◦))". Insert the black test lead into the ‘COM’ socket and
the red test lead into the V/Ω/TEMP/CAP socket. Using the test probes, touch the test points of
the test object. Red test lead = anode, black test lead = cathode. The forward voltage drop is dis-
played.
Measurement range
Resolution
Display
1 mV
Forward voltage
- Forward current: approx. 25 µA, reverse voltage: approx. 2.8 V.
Continuity testing
With the selector switch set to " / ◦))". Insert the black test lead into the ‘COM’ socket and
the red test lead into the V/Ω/TEMP/CAP socket. Using the test probes, touch the test points of
the test circuit. An acoustic signal is emitted if a resistance under 70 Ω is measured.
Important: Isolate from the power supply and discharge capacitors in the circuit to be
measured.