4 Specifications
USB connection
USB B connector.
5m USB A to USB B cable supplied.
USB FTDI VCP driver, serial port emulator at 115200baud.
Physical Size
5.5” x 2.6” x 1.1”
Meter weight
110g
Battery pack with batteries weight
120g
USB cable weight
140g
Meter precision
Each SQM-LU-DL-V is factory-calibrated. The absolute precision of each
meter is believed to be
±
10% (
±
0.10 mag/arcsec
2
). The difference in
zero-point between each calibrated meter is typically
±
10% (
±
0.10
mag/arcsec
2
)
Power requirement
18mA (from the 5V USB connection).
Can be put to sleep and woken up
for battery operated data logging.
3.42V minimum under battery operation.
The included battery adapter can handle up to 30VDC.
Operating temperature range
-40
°
C to 85
°
C
Temperature sensor
Accuracy:
±
2
°
C maximum at 25
°
C
Location: Internal near light sensor, measures internal meter temperature for
light sensor value compensation.
Temperature update rate
4.3 seconds, 256 samples taken at 60Hz then averaged.
Data logging capacity
128MB Flash chip, 32 bytes per record= 524288 records total.
Vector measurements
Pololu 2127 3D accelerometer/magnetometer module using the
STMicroelectronics LSM303D.
Real Time Clock accuracy
+1.73s/day @25
°
C, -2.27s/day @50
°
C, per Citizen crystal
CFS206-32.768KDZB-UB
Figure 4.1: Front and back of of unit
21
Summary of Contents for SQM-LU-DL-V
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