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Function marks

True RMS (True root-mean-square value)
True RMS value. AC current and voltage of a non-sine wave can be measured by true RMS values.
Expressed in the unit of Hz (hertz). Commercial frequency of 50Hz/60Hz can be measured.
Capacitor capacity (electrostatic capacity) is measured and expressed in the unit of F (farad), μF, etc.
Continuity check
The LED lights up when the measuring object is electrically conducting.
Continuity buzzer
The buzzer sounds when the measuring object is electrically conducting.
Battery check
Battery voltage is measured and assessed by running a given current.
Provided with graduations for measuring the DC current amplification factor (hFE) of a transistor.
4-20mA for sending instrumentation signals. Expresses the current loop of 4mA as 0% and 20mA as 100%
Scaling of voltage values is performed according to the reference impedance into dBm. Convenient for use with audio equipment.
Temperature measurement
Temperature can be measured using the optional probe.
Temperature measurement with PC Link
Temperature can be measured using the optional probe and PC Link software. (T-300PC is necessary.)
Auto power off
Power is automatically turned off when a certain time has elapsed after power-up. Some models have a function to cancel this function.
Auto power save
The display disappears to bring the device into the power-save state when a certain time has passed after power-up. Some models have a function to cancel this function.
Data hold
A value indicated on the display is fixed. It is fixed even after the test lead is removed, and can be used as a record for reference purposes.
Range hold
The range is fixed in the measurement of varying voltage and current which is difficult to read in the auto range.
Measurement of relative value
A certain measured value is assumed as 0 and measured values after that are expressed by positive or negative values relative the value fixed as 0.
Duty cycle
The duty cycle of repeating waveform is indicated on a percentage basis (%). It can be used for the analysis of control signals.
Capture (peak hold)
The peak value like in-rush current is indicated. The minimum pulse width capturable differs according to models.
The minimum value and maximum value of measured values are recorded. The recorded values can be seen later on the display.
Maximum value hold
The maximum value is held and displayed in the measurement of voltage, current and ADP.
Zoom bar graph
The scale is changed so as to allow reading minute changes on the bar graph.
Correction of resistance of test lead
This is a function to cancel the resistance portion of the internal circuit of the main body and test lead in the resistance measurement.
Auto polarity
Puts the indicator at the center in the automatic standby status by the setting of the selector switch so as to allow measurement by positive and negative values.
Polarity switch
The positive and negative polarity of the measuring terminal can be changed by this switch.
Zero-ohm adjuster
Cancels the contact resistance and internal resistance of the test lead to allow the measurement of the resistance value of a measuring object alone.
Zero-center meter (NULL)
Moves the indicator of the analog tester to the center of the scale (meter graduations) to make measurement of positive and negative voltage.
DC / AC measurable
Both ACA and DCA are measurable.
Drop shock proof
The meter element is furnished with a taut band and impact-resistant design enough to withstand a shock of drop.
Low power ohm
Resistance is measured by applying voltage of approximately 0.4V or less on a measuring object. It is characterized by the fact that the semiconductor does not conduct at approximately 0.4V or less even in forward direction.
Leakage current
A clamp meter that can make the measurement of leakage current have a range to allow measurements in milliamp.
Allows indicator reading in a dark place.
Output terminal
Cancels the DC current portion of voltage mixed with DC and AC to measure the AC portion alone. It is used for the measurement of audio signals.
Auto discharge
When the measurement of insulating resistance is complete, voltage charged in the measuring object is discharged.
RS232C connection
The signal output terminal is provided to send data to a PC. RS232C is the name of the signal standard.
USB connection
Data can be outputted by connection to the USB port of a PC.
Fuse for power supply
Current-limiting fuse to break the conduction up to 100kA
Insulating resistance
Insulating resistance can be measured (e.g. 500V/1000MΩ)
DC voltage
Mark for clamp meters with DCV function.
EF function
Non contact AC voltage detection function
Products utilizing lead-free solder
These are products that utilize lead-free solder and contain some components that do not conform to the RoHS Directive.