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v1.02
05/06/30
6
ES51918
11,000 Counts Auto DMM
Reference voltage temperature
coefficient
TC
RF
100KΩ
resister
Between
VRH
0℃<TA<70℃
—
50
—
ppm/℃
Minimum pulse width for Peak
Hold feature
T
PW
4MHz
crystal
oscillator
100
µs
1.5
%
11nF
15
Digits
1.0
%
110nF/1.1µF
10
Digits
1.0
%
11µF/110µF/1.1mF
5
Digits
1.5
%
Capacitance measurement accuracy2
11mF/110mF
5
Digits
Note
:
1.Full Scale
2.Above specification from 11nF to 1.1uF ranges are specified under REL mode.
Function Description
1.
Operating 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
110.00mV
1
R1
VR2
1.1000V
1/10
R2 / (R1+R2)
VR3
11.000V
1/100
R3 / (R1+R3)
VR4
110.00V
1/1000
R4 / (R1+R4)
VR5
1100.0V
1/10000
R5 / (R1+R5)
Note: 110.00mV range only exists in manual mode.
1.1.2 CE selection
ES51918 has a CE selection feature archived by configuring an CESEL pin. If pin
CESEL is connected to DGND or floating, ES51918 will have a 610.0V overflow level
in DC and AC 1100.0V ranges. If pin CESEL is connected to V-, ES51918 will have a
1010.0V overflow level in DC and AC 1100.0V ranges. The meter will Show OL when
the measuring signal reaches the overflow level. The configuration of CESEL is listed
below.
CESEL
DCV
ACV
V-
1010.0V
1010.0V
DGND or floating
610.0V
610.0V