ES51928
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
VR1
VR2
VR3
VR4
VR5
Full Scale Range
600.0mV*
6.000V**
60.00V
600.0V
1000V***
Divider Ratio
1
1/10
1/100
1/1000
1/10000
Resister Connection
VR1 (10MΩ)
VR2 (1.111MΩ)
VR3 (101KΩ)
VR4 (10KΩ)
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
ES51928 has a OL display selection feature archived by configuring a
CESEL
pin. If pin
CESEL
is connected to V-, ES51928 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 ES51928 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
V-
DGND
Floating
DCV
600.0V
1010V
1500V
ACV
600.0V
1010V
1010V
1.1.2 HCF detection
Ver 2.9
6
10/06/25
CYRUSTEK [ Cyrustek corporation ]
