V 1.3 

14 

2018/08/03 

ES289

20000 Counts Manual DMM

1.16. Hazardous Voltage Indication

The ES289 could provide the AC/DC hazardous voltage indication for voltage/resistor/ diode

modes. Of course, the indication could support LCD symbol /LED /Buzzer driving simultaneously.

Especially ES289 could detect the AC voltage in DCV mode and detects the DC voltage in ACV

mode. It means if not proper AC or DC voltage signal exists on the DUT when DCV or ACV

measurement mode is set, the HV indication will be still active.

HV indication criterion

Function / Range

DC voltage (typ.)

AC voltage (typ.)

AC mV

> +3V

OL

AC 4V

> +20V

OL

AC 40V – 1000V

> +100V

> 30Vrms

DC mV

OL

> 3Vrms (40-1kHz)

DC 4V

OL

> 20Vrms (40-1kHz)

DC 40V-1000V

> +30V

> 90Vrms (40-1kHz)

Freq. mode

> +40V

> 30Vrms (40-1kHz)

Res/Diode modes

> +10V

> 10Vrms (40-1kHz)

Note: If AC+DC signal is applied, the voltage criterion will be changed.