ES233 datasheet(8/37 Pages) CYRUSTEK

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V 2.2

2015/12/15

ES233

4000 Counts DMM

1.2.

Voltage Measurement

A re-configurable voltage divider automatically provides a suitable range in voltage measurement

mode. 400.0mV range is independent and manual mode. It takes input signal from mVin pin. The

following table summarizes the Full-Scale ranges in each configuration.

Configuration

Full Scale Range

Divider Ratio

Resister Connection

Input Pin

VR1

400.0mV

mVin V.S. SGND

VR2

4.000V

1/10

VR2 (1.111MΩ)

VR1 V.S. SGND

VR3

40.00V

1/100

VR3 (101KΩ)

VR1 V.S. SGND

VR4

400.0V

1/1000

VR4 (10KΩ)

VR1 V.S. SGND

VR5

1000V

1/10000

VR5 (1KΩ)

VR1 V.S. SGND

The VST pin is used to control the voltage start range from 4.000V or 400.0V, refer to the table.

VST

V+

DGND

Floating

V-

Initial state

400.0V

4.000V

400.0V

4.000V

The ES233 provide two types of the hazardous live voltage warning by different condition.

SEL2

V+

DGND

Floating

V-

DCV

35V

70V

ACV

16V

33V

When the voltage measured exceeds the level defined, the buzzer generates 2KHz beep and

ALARM (pin 57) drive high output (V+ level) periodically. It can remind the user to notice the

hazardous voltage. The buzzer sound warning could be cancelled by DIS (pin94).

DIS

V+

DGND

Floating

V-

Buzzer

Disable

Enable

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