LISST - 25 User’s Guide
16
SR
Set sample rate
Syntax:
SR x or sr x, where x= seconds between samples
(If no value follows command, prompts will be displayed)
Description:
The GR command acquires data at a fixed rate detriment by the SR
command. The number of seconds between samples is set.
Example:
input: SR 5
Cautions:
Check that the sample rate is not faster than the time it takes to acquire an
averaged sample.
ST
Set time and date
Syntax: ST: mm/dd/yyyy hh:mm:ss or st mm/dd/yyyy hh:mm:ss
Where mm=month, dd=day, yyyy=year, hh=hour(24 format),mm=minute,
ss=seconds
If no values follow the “
ST
” or “
st
” command, prompts for entering the time
and date will be displayed.
Description:
The LISST-25X has a built-in clock that must be reset after each power reset
or power up. See Also: DT, Display Time command.
Example:
input: ST 01/05/2001 21:05:03
Cautions:
The clock resets to 12:00 am 1/1/80 upon powering up.
Acquisition/Action commands
GR
Grab and store samples as set rate
Syntax:
GR x or gr x
Where x = number of samples to acquire
Description:
Acquires x averaged samples at fixed rate set by the SR command.
Example:
Input: GR 3
Output: Vol SMD Trans >63 Vol >63 SMD Depth
Sample #1 5.56 130.56 0.78 1.26 150.24 2.56
Sample #2 5.87 140.23 0.76 1.43 160.78 2.67
Sample #3 5.98 150.16 0.72 1.65 165.28 2.76
The first column is concentration, the second is the mean size, the third is the
percent transmission, th fourth is concentration greater than 63 microns, the
fifth is the mean size of the particles greater than 63 microns, and the sixth is
the depth in meters. Values are displayed to the screen and also stored to the
datafile.
Cautions:
To stop acquisition before it is complete press the Stop button or
CTRL-C
.
