12-7
IM 04L20A01-01E
Specifications
12
Item Specifications
Maximum sampling length Per floppy disk during manual save
The sampling length (the maximum data length) can be derived from the following equation.
Maximum sampling length = the maximum number of data points per channel × sampling interval
Maximum number of data points per channel
Calculated from internal memory capacity, types of data, data size, and number of measurement or
computation channels data to be stored
Data type Maximum number of data points per channel
Display data only 1,200,000 bytes/(number of measurement channels × 4 +
number of computation channels × 8)
Except, the maximum number of data points is 100,000
Display data and event data • Display data
900,000 bytes/(number of measurement channels × 4 +
number of computation channels × 8)
Except, the maximum number of data points is 75,000
• Event data
300,000 bytes/(number of measurement channels × 2 +
number of computation channels × 4)
Except, the maximum number of data points is 30,000
Event data only 1,200,000 bytes/(number of measurement channels × 2 +
number of computation channels × 4)
Except, the maximum number of data points is 120,000
Example of sampling length
When acquiring display data only
If we assume that the number of measuring channels is 12, the number of computing channels is
12, and the display rate is 30 min/div (60 sec sampling interval), then:
Number of data per channel = 1,200,000 bytes/(12 × 4 bytes + 12 × 8 bytes) = 8,333 data
*
* Maximum number of data points is 100,000.
Maximum sampling length = 8,333 × 60 sec = 500,000 sec = approx. 5.7 days
When acquiring event data only
If we assume that the number of measuring channels is 12, the number of computing channels is
12, and the sampling interval is 1 sec, then:
Number of data per channel = 1,200,000 bytes/(12 × 2 bytes + 12 × 4 bytes) = 16,667 data
*
* Maximum number of data points is 120,000.
Maximum sampling length = 16,667 × 1 sec = 16,667 sec = approx. 4.6 hours
When acquiring both display data and event data
The sampling length is calculated by defining the capacity for display data as 900,000 bytes and the
capacity for event data as 300,000 bytes. The method of calculation is the same as shown above.
Except, the maximum number of data points is 75,000
Manual Sampled Data
Item Specifications
Objective channels All channels
Data acquired Data when manual sampling operation is carried out
Format ASCII
Trigger Key operation, communication command (option), or remote input signals (option)
Max. number of data sets internal memory can hold
50
TLOG Data (option)
Item Specifications
Objective channels All channels
Data acquired Data at the intervals specified by a timer
Format Binary
Trigger Timeout of the internal timer
Max. number of data sets internal memory can hold
400 data sets or 16 blocks (number of computation start-and-stop operations)
12.4 Data Storage Specifications
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