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Acquisition modes
MSX-E3701-DIO
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7.1.3
“Average” (average value calculation)
Fig. 7-3: Auto-refresh mode: “Average”
The MSX-E system is capable of computing an average value for each channel.
In the field “Number of acquisitions”, you have to enter the number of acquisitions (2 to 255) after
which this value should be computed.
The acquisition can be carried out in two different ways (“Average mode”):
•
Per sequence:
All selected channels are acquired simultaneously.
•
Per channel:
The selected channels are acquired individually.
a) Acquisition per sequence
Example:
The MSX-E system acquires channels 1 to 8. “Number of acquisitions” contains the value 10.
This means that ten sequences run down, with each sequence consisting of eight channels to be
acquired.
Fig. 7-4: Auto-refresh mode: Acquisition per sequence
After these ten sequences have run down, the MSX-E system performs the following calculation:
Average value of channel 1
= (sequence 1, value of channel 1 + sequence 2, value of channel 1 + … + sequence 10, value of channel 1) / 10
Average value of channel 2
= (sequence 1, value of channel 2 + sequence 2, value of channel 2 + … + sequence 10, value of channel 2) / 10
…
Average value of channel 8
= (sequence 1, value of channel 8 + sequence 2, value of channel 8 + … + sequence 10, value of channel 8) / 10
Seq 1
Example:
10 sequences with 8 channels each
Ch1 Ch2 Ch3 Ch4 Ch5 Ch6 Ch7 Ch8
Seq 2
Seq 3
Seq 4
Seq 5
Seq 6
Seq 7
Seq 8
Seq 9
Seq 10