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E Series Ethernet Radio – User Manual
Optimising the Antenna for best RX
signal
Once the unit is operational, it is important to optimise the antenna
tuning.
In the case of a directional antenna, it will be necessary to align the
antenna for the best received signal.
This can be done by using the (0-5VDC) output on Pin 9 of the
Data Port to indicate signal strength (RSSI). This voltage can be
converted to dBm using the chart below.
LED Indicators & Test Outputs
Radio is Powered
If all the LEDs are off, no power is reaching the radio modem.
Successful power-up is indicated by the “PWR” LED indicating a
continuous (healthy) GREEN state. Note that this LED is turned
RED when the transmitter is active.
Analog RSSI Output Characteristics - E Series Data Radio
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
-120
-110
-100
-90
-80
-70
-60
-50
-40
RF Level (dBm)
R
SSI
(D
C
Vo
lts
)
Part E – Getting Started- ER45e
Radio Errors
Internal radio management software monitors many aspects of
the radio hardware. Under certain circumstances radio faults
may prevent normal operation. In the event that these fault
conditions occur, the radio will enter an ERROR state and this
will be indicated by flashing ALL LEDs RED, then flashing a
pattern of GREEN or AMBER LEDs. The pattern of GREEN LEDs
represents the specific type of error that has occurred.
All other patterns indicate serious hardware errors. Please record
this pattern and return the result with the service return information.
Note (1): If external voltage is too high (>30Vdc) radio damage
may occur. If the external voltage is too low (<10Vdc) the radio
may not operate within specifications.
Note (2) and (3): If the radio receiver or transmitter frequencies
are programmed outside the specified frequency ranges (model
type dependent), then normal radio operation may not be possible.
In this case, use TVIEW+ to set the receiver and/or transmitter
frequencies to be within the specified range. If this error occurs and
the frequencies are within the specified frequency ranges (model
type dependent), the radio will need to be returned for service.
