ES233 datasheet(9/37 Pages) CYRUSTEK

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V 2.2

2015/12/15

ES233

4000 Counts DMM

1.2.1. OL Selection

ES233 has a voltage OL selection feature archived by configuring the pin CESEL. In automatic

voltage mode, ES233 will show OL when the voltage is exceed the overflow level. If CESEL is

connected to V+, ES233 will have a 1010V overflow level in voltage mode. If CESEL connected to

DGND, the overflow level will be set to 610V in DCV and ACV mode. The configuration of CESEL

is listed below.

For ACV/DCV voltage modes:

CESEL

V+

DGND

OL level

1010V

610V

Note: V-/Floating level is not available.

1.3.

Low Pass Filter (LPF) Mode For ACA/ACV Mode

ES233 provides a 3

rd order low-pass filter to reduce the influence of high frequency noise. This

LPF feature is available in ACV or ACA modes. Set FC5 to low in these modes, the KEY button is

used to activate the LPF feature. Press KEY button for less than 1 second to select the 3dB bandwidth

of LPF sequentially ( Full / 1kHz ) and the relative LCD symbol on LCD panel will be active also.

The DIS (pin94) could enable/disable the Low Pass Filter feature available.

DIS

V+

DGND

Floating

V-

LPF

Disable

Enable

Disable

Enable

ES233 Datasheet(PDF) 9 Page - Cyrustek corporation