Omega RD-MV100 Series User Manual page 165

8.2 Function to Acquire Display Data and Event Data
Number of Data Points that can be Acquired and Sampling Length (The Maximum Auto
Save Interval for Display Data, the Maximum Data Length for Event Data)
8-6
This section describes the number of data points of the display data/event data that can
be acquired and the sampling length. Use the information when determining the amount
of time it takes for the internal memory to become full or when deciding the channels to
be acquired or the sampling interval.
The possible range of menus of the auto save interval of display data and the data length
of event data is displayed in the soft keys based on the information described here.
Data format
The display data have minimum and maximum values for each sampling interval. Event
data consists of instantaneous values.
The number of data bytes per channel is shown in the following table.
Data Type Measurement Channel
Display data 4 bytes/channel
Event data 2 bytes/channel
Example
Data format when the data of measurement channels 1 to 4 and a computation
channel 31 are acquired.
Display data
1st scan
CH1 CH1 CH2 CH2 CH3
min max min max min
2nd scan
CH1 CH1 CH2 CH2 CH3
min max min max min
to
nth scan
CH1 CH1 CH2 CH2 CH3
min max min max min
2 bytes (binary data)
Event data
1st scan
CH1 CH2 CH3 CH4
CH31
2nd scan
CH1 CH2 CH3 CH4
CH31
to
nth scan
CH1 CH2 CH3 CH4
CH31
2 bytes (binary data)
Internal memory capacity
The capacity of the internal memory that is used for data storage is 1.2 MB. The internal
memory is allocated depending on the acquired data as follows.
Data being Acquired
Display data only
Display data and event data
Event data only
Computation Channel
8 bytes/channel
4 bytes/channel
CH3 CH4 CH4
CH31
max min max
min
CH3 CH4 CH4
CH31
max min max
min
CH3 CH4 CH4
CH31
max min max
min
Internal Memory Capacity
1.2 MB
Display data : 0.9 MB
Event data : 0.3 MB
1.2 MB
CH31
max
CH31
max
CH31
max