File Format
6-19
Data File
Data converted from analog to digital is recorded as 2-byte integers from -32768 to +32767. Negative
numbers are expressed as complements of 2.
The byte order is from the lower bytes to the higher bytes (Intel format)*1.
The order of data is as follows: first sampling channel order, second sampling channel order, ....., last sampling
channel order. This order is called the INTERLACED format*2, and the format name is recorded in
STORAGE_MODE in the header file.
The organization of a data file is shown in the following diagram. In this document a collection of data as
shown in the example is called one scan. A data file consists of scan repetitions.
Example
Data of 1 scan when recorded with a sampling frequency of 6 kHz:
Notes
*1. The byte order from the higher to the lower bytes is called the Motorola format. It is used in components
such as FFT analyzers that used Motorola CPUs and in workstations.
*2. The order of data of the SEQUENTIAL format is as follows: first channel sampling order, second channel
sampling order, ....., last channel sampling order.
ch 1
ch 2
ch 3
ch 4
ch 5
ch 6
ch 7
ch 8
Data Sequence
1/6000 seconds
Содержание LX Series
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Страница 10: ...Contents viii...
Страница 26: ...Sampling Frequency and Number of Channels 1 16...
Страница 117: ...Main Unit Specifications 6 3 External Dimensions...
Страница 142: ...Recording Synchronization Specifications 6 28...
Страница 143: ...7 1 Section 7 Appendixes Troubleshooting 7 2 Supplied Accessories and Options 7 3 Supplied Accessories 7 3 Options 7 3...
Страница 146: ...Note 7 4 Note...
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