Unihedron SQM-LU-DL-V, Руководство оператора

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8 Commands and responses
8.8 Setting Interval reporting parameters
For firmware feature
≥
13, the SQM-LU-DL-V is capable of sending timed interval reports. Each interval report is the
same as the reading request report except that the serial number (feature
≥
14) is attached at the end so that numerous
reporting SQM-LU-DL-Vs can be distinguished from each other.
The format of the interval report is shown in table 8.44:
Table 8.44: Interval report
Column Example value Description
0
r
Indicates that a reading is being returned.
2-8
06.70m
Reading in magnitudes per square arc second.
Leading space for positive value.
Leading negative sign (-) for negative value.
A reading of
0.00m
means that the light at the sensor has reached
the upper brightness limit of the unit.
10-21
0000022921Hz
Frequency of sensor in Hz.
23-33
0000000020c
Period of sensor in counts. Counts occur at a rate of 460.8 kHz
(14.7456MHz/32).
35-46
0000000.000s
Period of sensor in seconds with millisecond resolution. Determined
by dividing the above counts value by 460800.
48-54
039.4C
Temperature measured at light sensor in degrees C.
Leading space for positive value.
Leading negative sign (-) for negative value.
55-63
00000413
Serial number (8 digits). Each unit has its own unique serial num-
ber.
64-65 Carriage return (0x0d), Line feed (0x0a).
An example is:
r, 06.70m,0000022921Hz,0000000020c,0000000.000s, 039.4C,00000413
0123456789 123456789 123456789 123456789 123456789 123456789 12345
8.8.1 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, the command “
p0000000360x
” sets the reporting time to once every 360 seconds.
8.8.2 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
88
Unihedron SQM-LU-DL-V Operator’s Manual -
20211013