9
9
AsteRx-m OEM
9
2.3
Physical and Environmental
Input supply voltage
3.3V +/- 5%
Antenna supply voltage
3-6V
Maximal antenna current
200 mA per RF connector (built-in current limit)
Antenna gain range
External antenna input connector: 10-40dB
Internal antenna input connector: 10-30dB
Antenna input impedance
50 Ohms
Operating Temperature Range
-40 to 85 deg C
2.4
Power Consumption
The power consumption lies between 350mW and 600mW depending on the set of GNSS
signals enabled by the “
setSignalTracking
” command.
The following table shows the typical power consumption for selected sets of signals.
Signals enabled with the
setSignalTracking
command
Power
Consumption
GEOL1
350 mW
(1)
GEOL1+GLOL1CA
400 mW
(2)
GEOL1
500 mW
(1)
GEOL1+GLOL2CA
600 mW
(2)
(1)
Assuming an average of 12 satellites in tracking (GPS+SBAS)
(2)
Assuming an average of 20 satellites in tracking (GPS+SBAS)
2.5
Antenna Selection
By default, the receiver automatically switches to the external antenna when an active
antenna is detected on the external antenna input connector. Detection is based on the
monitoring of the current drawn from the external antenna connector. When that current
exceeds 6mA, an active antenna is assumed to be connected and the receiver switches to
the external connector.
This default operation can be overruled with the command
setAntennaConnector
.
If your external antenna is not powered by the receiver, automatic detection will fail. A
typical case when this can happen is when the receiver is connected to a power splitter
and not directly to the antenna.
In such case, you must enter the command “
setAntennaConnector, Ext
” to guarantee
correct operation.
Likewise, when connecting the external antenna connector to a GNSS signal simulator,
you must enter the command “
setAntennaConnector, Ext
” to make sure the receiver is
using the external antenna connector.
