ES51918
11,000 Counts Auto DMM
Reference voltage temperature
coefficient
Minimum pulse width for Peak
Hold feature
TC
RF
T
PW
100KΩ resister
Between VRH
0℃<TA<70℃
4MHz
crystal
oscillator
11nF
110nF/1.1µF
Capacitance measurement accuracy
2
—
100
50
—
ppm/℃
µs
11µF/110µF/1.1mF
11mF/110mF
1.5
15
1.0
10
1.0
5
1.5
5
%
Digits
%
Digits
%
Digits
%
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
VR1
VR2
VR3
VR4
VR5
Full Scale Range
110.00mV
1.1000V
11.000V
110.00V
1100.0V
Divider Ratio
1
1/10
1/100
1/1000
1/10000
Resister Connection
R1
R2 / (R1+R2)
R3 / (R1+R3)
R4 / (R1+R4)
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
v1.08
6
06/04/03
CYRUSTEK [ Cyrustek corporation ]
