Digi IX20hardwarereference IX20LEDs
IX20 User Guide
33
n
Off: No Ethernet link detected.
n
Solid green: 10/100 Mbps link detected.
Signal quality barsexplained
The signal statusbars for the Digi IX20 measure more than simply signal strength. The value reported
by the signal barsis calculated using an algorithm that takes into consideration the Reference Signals
Received Power (RSRP), the Signal-to-noise ratio (SNR), and the Received Signal Strength Indication
(RSSI) to provide an accurate indicator of the quality of the signal that the device isreceiving.
For 3Gnetworks(including HSPA+) and 2Gnetworks, the signal strength bars are determined by the
RSSI value.
4GLTEalgorithms
For 4GLTE, the IX20 device determines the RSRP, SNR, and RSSI values separately and uses the
following algorithmsto display the signal quality:
RSRP > -85, rsrp_bars=5
-95 < RSRP <= -85, rsrp_bars=4
-105 < RSRP <= -95, rsrp_bars=3
-115 < RSRP <= -105, rsrp_bars=2
-199 < RSRP <= -115, if we're connected to the cellular network, rsrp_bars=1,
if not rsrp_bars=0
If RSRP<=-199, the device usesthe RSSI as the value with the same algorithm:
SNR >= 13, snr_bars=5
4.5 <= SNR < 13, snr_bars=4
1 <= SNR < 4, snr_bars=3
-3 < SNR < 1, snr_bars=2
-99 < SNR <= -3, if we're connected to the cellular network, snr_bars=1, if not
snr_bars=0
Once the snr_barsand rsrp_barsvalues are determined, the deviceusesthe lesser of the two as the
reported signal a bars.
3Galgorithm
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
barsisthen reported as the signal strength bars.
2Galgorithm
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
To Next Page
Loading...
Need help?
General