The sensor supply is activated by setting the warmup time in the "Basic settings" configuration
section (see "Basic setting" on page 70). The warmup time specifies how long the sensor supply is
switched on before the measurement. If the setting is 0 seconds, the sensor supply is not activated
before or during the measurement. The sensor supply remains permanently active if a higher value
is selected for the warmup time than the record interval.
Note: If the sensor supply is permanently active, the energy requirements are greatly
increased and the operating time of the device is significantly shortened.
The battery voltage (U
bat
) is always available at the sensor connector (see "Connecting the sensors"
on page 38) and cannot be deactivated.
Note: The time of the first recording following the PowerOn is calculated and is not completed exactly according to
the time after the PowerOn specified via the record interval. If the record interval is 1 minute long, the first
recording is selected in such a way that it is completed at the full minute mark. This means that if the PowerOn is
completed at 12:05:34, the first recording is taken at 12:06:00, i.e. 26 sec. after the PowerOn.
Note:
Example to explain the relationship between the warmup time and the record interval (warmup time < record
interval):
Basic setting
Record interval
1min.
Warmup time
20 seconds
Output on the device
Sensor supply
Explanation: The sensor supply is activated once the record interval has elapsed. The actual measurement and
recording is only completed once the warmup time has elapsed, i.e. in the current example 20 seconds after the
record interval has elapsed.
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