ES51983
3 3/4 AUTO DMM
FR1
FR2
FR3
FR4
FR5
4.000KHz
40.00KHz
400.0KHz
4.000MHz
40.00MHz
1.8 Sleep
The meter enters sleep mode after auto power off. The SLEEP pin asserts low (-3V) in
the sleep mode, and asserts high (+3V, not 0V) after re-power on.
1.9 Re-power on
After auto power-off, pushing any of the push function or changing the rotary mode can
turn on the meter again. If the meter is re-powered on by changing the rotary mode, the
saved state is cleared. If the meter is re-powered on by push functions, the chip restores
the saved state and enters HOLD mode. The LCD displays the saved value.
2. Measurement Mode Switching
Measurement mode depends on the logic level of FC1, FC2, FC3, FC4, FC5, and KEY.
When FC5 is HIGH, the measurement modes are listed in the following table.
SLACDC FC1 FC2 FC3 FC4
Mode
Voltage Measurement
Function of KEY
DCV(initial) ↔ACV
DCA(initial) ↔ACA
DCA(initial) ↔ ACA
DCA (initial) ↔ACA
DCA(initial)
0
0
0
0
1
1
1
1
0
1
1
0
1
0
1
0
1
1
1
1
Current Measurement(µA)
Current Measurement(mA)
Manual Current Measurement(A)
0
1
0
1
0
0
0
1
0
1
Auto Current Measurement(A)
Voltage Measurement
ACV (initial) ↔DCV
1
1
1
1
1
1
1
1
0
0
1
0
1
1
1
Current Measurement(µA)
Current Measurement(mA)
Manual Current Measurement(A)
ACA(initial) ↔DCA
ACA (initial) ↔DCA
ACA (initial) ↔DCA
ACA (initial)
Ω ↔ Continuity
Ω ↔ Diode
Continuity Diode
Ω ↔ Continuity ↔Diode
—
1
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
1
1
0
0
Auto Current Measurement(A)
Resistance Measurement
Resistance Measurement
Continuity Check
X
X
X
X
X
X
Resistance Measurement
Frequency Measurement
Temperature(℃)
—
9
11/01/05
CYRUSTEK [ Cyrustek corporation ]
