Ver 2.7

6

07/10/03

ES51927

6000 Counts Smart DMM

Functional Description

1. Operation Modes

1.1 Voltage Measurement

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

voltage measurement mode. The following table summarizes the full-scale ranges

in each configuration.

Configuration

Full Scale Range

Divider Ratio

Resister Connection

VR1

600.0mV*

1

VR1 (10MΩ)

VR2

6.000V**

1/10

VR2 (1.111MΩ)

VR3

60.00V

1/100

VR3 (101KΩ)

VR4

600.0V

1/1000

VR4 (10KΩ)

VR5

1000V***

1/10000

VR5 (1KΩ)

Note:

* Exists in manual mode only by RANGE key control

**This range is the default range for auto range & auto scan mode

*** Depends on CESEL selection

1.1.1 OL selection

ES51927 has a OL display selection feature archived by configuring a CESEL

pin. If pin CESEL is connected to V-, ES51927 will have a 600.0V overflow

level in DC and AC 600.0V ranges. And the 1000V range will not occur

anymore. If pin CESEL is connected to DGND, the ES51927 will have a 1010V

overflow level in DCV mode and have a 1010V overflow level in ACV mode

also. When CE is floating, a 1500V overflow level in DCV mode but ACV is

still 1010V overflow level. The meter will Show OL when the measuring signal

reaches the overflow level with beeper warning. The configuration of CESEL is

listed below.

CESEL

DCV

ACV

V-

600.0V

600.0V

DGND

1010V

1010V

Floating

1500V

1010V