Unihedron SQM-LU, Руководство пользователя

Страница: 21 / 30

Unihedron SQM-LU Users manual
Interval reporting is available for sending timed reports to a listening program.
To prevent reports being sent during daylight when the meter is saturated with light, a threshold value
can be set. Readings exceeding the threshold (dark) will be reported, low readings (too bright) will be
suppressed.
Due to the construction nature of EEPROM, there is a limited number of times that this memory can be
written to before it becomes unreliable. In the case of the SQM-LU, the erase/write cycle is 1 million
times. For this reason, it is recommended that frequent parameter changes be done in RAM rather than
in EPROM. Only set the parameter to EEPROM when you want the unit to boot up with your setting.
See following sections for how to set EEPROM or RAM.
Loading firmware clears resets the micro-controller effectively copying the EEPROM values into
RAM.
4.2.11.1 Interval reporting period setting
Executing the command “
P##########x
” (note upper case “P”) sets the period of the timed interval
reports to the EEPROM and RAM for booting and immediate use.
Executing the command “
p##########x
” (note lower case “p”) sets the period of the timed interval
reports to RAM only for immediate use.
The units are seconds. For example,
p0000000360x
sets the reporting time to once every 360
seconds.
4.2.11.2 Threshold setting for interval reporting
Executing the command “
T########.##x
” (note upper case “T”) sets the threshold of the timed
interval reports to EEPROM and RAM for boot and immediate use.
Executing the command “
t########.##x
” (note lower case “t”) sets the threshold of the timed
interval reports to RAM for immediate use only.
The units are
magnitudes
arcsecond
2
. For example,
t00000016.00x
limits reporting to values only over
16.00
magnitudes
arcsecond
2
.
Revision 1.1 Page 19 Last modified: Jun 18, 2011