ES51945(5000counts)
Dual Display/No Cap
The semi-auto calibration scheme supports the following seven measurement modes. When
CAL_EN pin is active, set the proper function switches and push SEL key to choose the
target measurement mode. When mode is selected, the LCD segment of Unit at related
measurement will be blinking.
Mode
Default range for CAL
Remark
Accuracy of other
ranges is guaranteed by
external resistor
Lower range in auto
ACA mode
DC Voltage measurement
AC Voltage measurement
5.000V
DC Current measurement
AC Current measurement
DC uA measurement
50.00A or 500.0A or 5000A
500uA or 5000uA
-
Lower range in Auto
Temperature mode
Temperature measurement
500.0oC or 5000 oC
After calibration procedure is finished, set the ES51945 to OFF-state and set CAL_EN
to DGND to return to normal mode operation after re-power on.
2.2. 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
1VR1
Full Scale Range
500.0mV
5.000V
Divider Ratio
1
Resister Connection
VR1 (10MΩ)
VR2 (1.111MΩ)
VR3 (101KΩ)
VR4 (10.01KΩ)
VR5 (1KΩ)
VR2
VR3
VR4
VR5
1/10
1/100
1/1000
1/10000
50.00V
500.0V
1000V
Note:
1.
500.0mV range only exists in manual mode.
2.2.1 CE selection & high voltage (HV) indication
ES51945 has a CE selection feature archived by configuring the pin CESEL. In automatic voltage mode,
ES51945 will show OL when the voltage is over than the overflow level. If CESEL is connected to V- or
DGND, ES51945 will have a 610.0V or 1010V overflow level in voltage mode relatively.. The configuration
of CESEL is listed below.
For fully automatic voltage modes:
CESEL
V-
DCV
610V
ACV
610V
DGND or floating
1010V
1010V
v2.3
10
10/06/25
CYRUSTEK [ Cyrustek corporation ]
