08/09/09

10

ES51983

3 3/4 AUTO DMM

Ps. X means “don’t care”

When FC5 is LOW, KEY is disable. The corresponding measurement modes are list

below

SLACDC

FC1

FC2

FC3

FC4

Mode

0

1

0

1

1

AC Voltage Measurement

0

1

1

0

1

AC Current Measurement(µA)

0

1

1

1

1

AC Current Measurement(mA)

0

1

0

0

1

Manual AC Current Measurement(A)

0

0

0

0

0

Auto AC Current Measurement(A)

1

1

0

1

1

DC Voltage Measurement

1

1

1

0

1

DC Current Measurement(µA)

1

1

1

1

1

DC Current Measurement(mA)

1

1

0

0

1

Manual DC Current Measurement(A)

1

0

0

0

0

Auto DC Current Measurement(A)

X

0

0

1

1

Resistance Measurement

X

0

1

0

1

Resistance Measurement

X

0

0

0

1

Continuity Check

X

0

1

1

1

diode Measurement

X

0

0

1

0

Frequency Measurement

X

0

1

0

0

Temperature(℉)

Ps. X means “don’t care”

The other combinations of FC1, FC2, FC3, and FC4 are for ADP modes. In ADP modes

, if FC5 is LOW, the minus sign on the LCD panel will not be displayed. And if KEY pin

is floating, the buzzer beeps when the input signal is overflow. The ADP mode function

is summarized below.

FC1

FC2

FC3

FC4

Mode

1

1

1

0

ADP0

1

1

0

0

ADP1

1

0

0

0

ADP2

1

0

1

0

ADP3

Note: Temperature measurement mode takes input signal from ADP pin. In temperature

measurement mode, VBAR pin is used to control the right most digit point on the

LCD panel. When VBAR is LOW, this digit point is displayed.

3. Push function

3.1 HOLD

HOLD mode makes the meter stop updating the LCD panel. This mode can be nested in

most of the special modes. Enabling HOLD function in automatic mode makes the

meter switch to manual mode, but the full scale range remains the same. HOLD function