11/01/05

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ES51981

3 1/2 AUTO DMM

5.4 Operating Timing

ES51981 incorporates a dual slope ADC with four phases: ZI, AZ, INT and DINT.

The timing of each phase is listed below.

*Voltage /ohm/ADP measurement:

Phase

Time

ZI

100ms

AZ

100ms

INT

100ms

DINT

200ms

Ps. In the voltage and ohm measurement with auto mode, if the range is changed,

the internal clock rate will increase ten times and the new measurement cycle

becomes 1/10 times of the original cycle until the range is stable.

*Current mode

Phase

Time

ZI

100ms

AZ

100ms

INT

100ms

DINT

100ms

*Continuity/diode measurement

Phase

Time

ZI

10ms

AZ

10ms

INT

10ms

DINT

20ms