25
If the circuit you are testing is not within a 0.4 volt (plus or minus)
of supply voltage, you will see the voltage reading on the LCD but
you will not hear a tone or see a red or green LED. This tells you
either you have a voltage drop in excess of 0.8 volt from battery
voltage or you are probing a circuit that has an increase of a 0.8 volt
or more over battery voltage. To determine battery voltage, simply
remove the tip from the circuit and press the power switch forward.
Battery voltage will then be displayed on the LCD. The difference
between the battery voltage and what is read on the circuit is either
voltage drop or voltage increase. This allows you to determine a
voltage drop without running back to check the battery. It’s just
another one of time saving feature the tool has.
4. Test Tool Specifications
DC voltage range : 0-65V +1 digit
Resistance range : 0-100 KΩ
Frequency response of tone pass through 0Hz to 10Khz.
Circuit Breaker
Rating current: 1-10 Amp
1) Is the 308 Probe Tester computer and air bag safe?
5. Test Tool Know-how
The tool LED and LCD pull no more than 1 milliamp of current,
therefore when using it as a test light or multimeter it is computer
and airbag safe. However, pressing the power switch is a different
story. When you press the switch forward, you are conducting full
battery current to the tip of the probe. There is a nice safety feature
built into the tool. Simply connect the extra ground lead to the tool
and press the power switch forward until it trips the circuit breaker.
