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Digi IX20 hardware reference
-99 < SNR <= -3, if we're connected to the cellular network, snr_bars=1, if not
snr_bars=0
Once the snr_bars and rsrp_bars values are determined, the device uses the lesser of the two as the
reported signal a bars.
3G algorithm
For 3G, the IX20 determines RSSI signal strength:
RSSI > -80, bars=5
-90 < RSSI <= -80, bars=4
-100 < RSSI <= -90, bars=3
-106 < RSSI <= -100, bars=2
RSSI <= -106, if we're connected to the cellular network, bars=1, if not bars=0
bars is then reported as the signal strength bars.
2G algorithm
For 2G, the IX20 determines RSSI signal strength:
RSSI > -80, bars=5
-89 < RSSI <= -80, bars=4
-98 < RSSI <= -89, bars=3
-104 < RSSI <= -98, bars=2
RSSI <= -104, if we're connected to the cellular network, bars=1, if not bars=0
bars is then reported as the signal strength bars.
IX20 power supply requirements
IX20 is intended to be powered by a certified power supply with output rated at either 12 VDC/0.75 A
or 24 VDC/0.375 A minimum.
Use the included power supply (part number 24000154).
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If you are providing the DC power source with a non-Digi power supply, you must use a
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certified LPS power supply rated at either 12 VDC/0.75 A or 24 VDC/0.375 A minimum. The
voltage tolerance supports +/- 10% (9 VDC to 30 VDC) at 9 Watts minimum.
For installations requiring protective earth grounding, connect the -ve terminal of the power
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connector to the system protective earth with a minimum 1mm2 stranded single insulated
cable. Crimp terminals should be used for all connections.
Digi IX20 serial connector pinout
The IX20 is a DTE device. The pinout for the DB9 serial connector is as follows:
Signal name
Transmit Data
IX20 User Guide
Direction
RS232
signal
DTE
TxD
Out
IX20 power supply requirements
DCE
DB9 pin number
In
3
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