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ZENO®-3200
USER MANUAL
Count. When the Sensor Sample Count is set to one, only one measurement for the analog or digital
sensor is taken at each Sensor Timing Loop period.
When the Sensor Sample Count is greater than one, the ZENO®-3200 will
take more than one measurement of the analog or digital sensor and report
the average of all measurements taken.
In Section 10.3.7, an example timing-diagram was made showing a Sample Interval of 20 seconds, a
Sample Duration of 19 seconds and a Sensor Timing Loop period of 2.5 seconds. As an example, you
want to increase the accuracy of an 18-bit ADC sensor. To do this, take three consecutive measurements
at each Sensor Timing Loop period and average them, which will increase accuracy. Setting the Sensor
Sample Count (Line Item #10) to 3 can be illustrated with the following timing diagram:
Sample
Sample
Sensor
Sensor
Interval
Duration
Timing Loop
Sample Count
|---------------------------------------|
|-------------------------------------| |
^
^
^
^
^
^
^
^
¤¤¤ ¤¤¤ ¤¤¤ ¤¤¤ ¤¤¤ ¤¤¤ ¤¤¤ ¤¤¤
20s
19s
2.5s
3
Sensor Reading at each ^
Individual Measurement at each ¤
Care must be taken when setting the Sensor Sample Count in conjunction
with the Sensor Timing Loop period because taking multiple consecutive
measurements increases the time required for each reading of that sensor.
The more time it takes to read an individual sensor, less time is available for
other similar sensor types to get their readings.
Configuration timing issues are explained in detail in Section 12.1.
The default (and minimum) value for the Sensor Sample Count is 1. The maximum value is 255.
10.3.10.
Using Switched Voltage To Control Sensor Power
®
The ZENO -3200 provides two 5 V DC and three 12 V DC switched, regulated output voltages for
powering sensors.
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