Ditel MICRA-D, Инструкция по эксплуатации

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22
4. CHRONOMETER CONFIGURATION
INPUTS
The meter has two inputs for the START and STOP
signals that provide different types of time measurement
according to input setup (see page 23 "Start and Stop
Modes").
There are three selectable operating modes:
mode In-A , that allows to measure the width of a pulse,
and
mode In-AB , that is used to measure the difference
between two signals
t
t
MEASURE
Time measurement is initiated on a rising edge of the
START input. This starts up an internal counter which is
controlled by a high precision crystal quartz clock.
The STOP signal suspends the internal count keeping the
value of the counter to the START of following time
measurement cycle.
The counter is missed to zero in a RESET operation.
In a disconnection from the power source, the instrument
saves the count value reached internally.
DISPLAY
The display can not be scaled, it only reads time in the units
selected according to the programmed time range.
The decimal point appears at a fixed position according to
time range.
OFFSET
An offset value can be programmed for example to count
down to zero from the preset time value.
The measured value, and the alarms if they exist, is
updated in each minimum unit of the selected magnitude.
Display refreshment: each 100ms.
22
4. CHRONOMETER CONFIGURATION
INPUTS
The meter has two inputs for the START and STOP
signals that provide different types of time measurement
according to input setup (see page 23 "Start and Stop
Modes").
There are three selectable operating modes:
mode In-A , that allows to measure the width of a pulse,
and
mode In-AB , that is used to measure the difference
between two signals
t
t
MEASURE
Time measurement is initiated on a rising edge of the
START input. This starts up an internal counter which is
controlled by a high precision crystal quartz clock.
The STOP signal suspends the internal count keeping the
value of the counter to the START of following time
measurement cycle.
The counter is missed to zero in a RESET operation.
In a disconnection from the power source, the instrument
saves the count value reached internally.
DISPLAY
The display can not be scaled, it only reads time in the units
selected according to the programmed time range.
The decimal point appears at a fixed position according to
time range.
OFFSET
An offset value can be programmed for example to count
down to zero from the preset time value.
The measured value, and the alarms if they exist, is
updated in each minimum unit of the selected magnitude.
Display refreshment: each 100ms.