ES51950(5000counts)
Dual Display/Cap
During voltage measurement is in operation (DCV or ACV), the HV indication will be
active when input voltage is larger than 30V or OL in manual range. The HV indication
includes:
z
z
z
HV warning LCD segment active
Buzzer output active if DIS_DGB (pin107) is kept floating
ALARM (pin91) LED output active.
2.2.2 NCV mode
ES51950 supports a non-contact AC voltage measurement, which is called electric field
measurement also. The EF mode is selected by setting function control mode FC1-FC4 =
[1,0,0,1]. The ADC input is configured from ADP pin vs. SGND. When no or less electric
field is detected, the first-display LCD shows “EF” and the second-display LCD shows
“Blank”. If the electric field is detected, the strength will be showed on the second-display
LCD by “-“ not digits type. Level 1(equivalent to 12.5% full scale of ADC) is “-“ and the
level 4(equivalent to 100% full scale of ADC) is “----“. Additional beeper (BUZOUT pin)
and LED alarm (ALARM pin) will be output from ES51950. The frequency of buzzer and
LED alarm depends on the strength of electric field also. The Faster beeper means the
stronger electric field (AC voltage) is sensed.
LEVEL 1 (12.5%)
LEVEL 2 (25%)
LEVEL 3 (50%)
LEVEL 4 (100%)
-
- -
- - -
- - - -
MANU
MANU
MANU
MANU
E F
E F
E F
E F
EF test circuit
100k
ADP
EFin+
EFin-
88M
SGND
AGND
-400mV
VA-
v2.3
11
10/06/25
CYRUSTEK [ Cyrustek corporation ]
