ES239 Datasheet, PDF (9/36 Pages) Cyrustek corporation – 6000 Counts DMM / Inrush

ES239
6000 Counts DMM / Inrush
1.2.1. OL Selection
ES239 has a voltage OL selection feature archived by configuring the pin CESEL. In automatic
voltage mode, ES239 will show OL when the voltage is exceed the overflow level. If CESEL is
connected to V+, ES239 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:
OL level
Note: V-/Floating level is not available.
CESEL
V+
DGND
1010V
610V
1.3. Low Pass Filter (LPF) Mode For ACA/ACV Mode
ES239 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.
When inrush mode is active, the LPF mode (BW_3dB = 1kHz) will be enabled temporarily.
The DIS (pin94) could enable/disable the Low Pass Filter feature available.
DIS
V+
DGND Floating
V-
LPF
Disable Enable Disable Enable
V 2.2
9
2015/12/15