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Table 2. Operational Parameters (Continued)
Sensitivity (10 db S/N)
Image Frequency Attenuation (1st IF = 45 MHz)
Local Oscillator Leakage
Adjacent Channel Attenuation
RSSI Dynamic
Operating Current (incl. onboard microcontroller)
Transmitter (all measurements made on a 50 Ohm resistive
load)
Output Power
Spurious Radiation (0 to 862 MHz)
Spurious Radiation (862 MHz to 3.5 GHz)
Adjacent Channel Power (12.5 kHz version)
Adjacent Channel Power (25 kHz version)
Occupied Bandwidth (12.5 kHz version)
Occupied Bandwidth (25 kHz version)
Operating Current (incl. onboard microcontroller)
SDI-12
Sensor Supply Voltage
Sensor Supply Current
a. Data rate is content dependent.
b. This parameter represents the tuning range; the switching range may be limited in
the software to a narrower space (even to the extent of a single channel).
c. Continuous duty.
d. This applies for sensors which are powered by the RTU's internal battery.
e. This is the maximum peak current for all sensors on the SDI-12 bus.
Parameter
d
e
Min
Typ
-105
35
55
90
c
7
9
5.5
6.0
Max
Unit
dBm
dB
2
nW
dB
dB
20
mA
10
dBm
2
nW
200
nW
-32
dBm
-44
dBm
8.5
kHz
15
kHz
50
mA
10.0
V
500
mA
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