2.6.4 microres
The “microres” option sets the device to record time stamps with 0.1ms precision. In micro-resolution
mode, the time stamps are recorded as XX.YYYYZZ where XX are seconds, YYYY are 0.1
milliseconds, and ZZ are spurious digits beyond the precision capability. The micro-resolution option
should be implemented at sample rates greater than 200 hertz to provide the best timing precision.
2.6.5 rebootondisconnect
The X16-1D incorporates an on/off button for initiating and terminating the data recording process.
Data recording is automatically started upon disconnect from a computer USB port if the tag word
“rebootondisconnect” is included in the configuration file.
2.6.6 samplesperfile
“samplesperfile” defines the number of data lines each file can have before a new file is created. This
tag controls the size of the data files into easily manageable lengths for later processing. This setting is
loaded as a signed 32-bit integer, which can translate into very large data files. The user should
exercise caution before setting large files and test the end-user software application for data limitations.
2.6.7 samplerate
The “samplerate” tag defines the data rate in Hertz, or samples per second. Valid sample rate settings
are 12, 25, 50, 100, 200, and 400 Hz. See section 4.1 for special features regarding the sample rates.
2.6.8 starttime and stoptime
The X16-1D starts and stops data recording based on the times defined using the “starttime” and
“stoptime” tags. The times must be in “MM HH DD” 24-hr format with the three entries separated by
a space. Entries marked with “*” operate as a wild card. The X16-1D continues to record after the
start time unless defined otherwise by the stoptime tag. Note that the configuration option does not
include the month. Example timing configurations:
Example 1: On the 15th day, start recording at 12:30pm and
stop recording at 6:00pm.
starttime = 30 12 15
stoptime = 00 18 15
Example 2: Start recording at the beginning of every hour
and stop recording 45 minutes later.
starttime = 00 *
stoptime = 45 *
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X16-1D, Rev B
Micro-resolution is best suited for applications requiring precise timing, such as vibration
analysis, and is recommended for sample rates above 200 Hz. The standard timing
precision (default) of 1 milli-second is suitable for most general applications, such as
monitoring human motion.
