Cybertec Pty Limited
Copyright c
2016
Document: 0013-001-000484
Series 2000 Model 2455/2455X Quick Start Guide
Version: 1.3
16 December, 2016
Figure 2: Front panel indicators
4.3.1 Status Indicator
The status indicator reports the health of the unit. In normal operation the indicator will be green, if a fault is detected
either at boot-up or during normal operation the indicator will light red. When the unit is first switched on or is reset the
indicator will first light red, then flash red in sequence with the Network Indicator (refer to section 4.3.2), this is normal
behaviour during boot-up and does not indicate a fault.
Indicator Boot-up behaviour Normal operation
Red No Fault Fault
Red Flashing No Fault Fault
Green N/A No Fault
Table 1: Status Indicator.
The indicator will light red or green a short time after power is applied. If the indicator does not light when power is
applied check the power supply voltage and connections, refer to Section 5.4 for details.
4.3.2 Network Indicators
There are network indicators one for each SIM. The indicator reports the status of the connection to the network. When
powered up the indicator will be off, the indicator will then flash green whilst the unit searches for a network, once
connected to the network the indicator will light green. The possible states are shown in Table 2.
Indicator Description
Off Not ready
green flashing (slow) Searching for network
Green Flashing (sequence) Indication of received signal strength
Green flashing then Red Packet connection establishing or fault
Red flashing SIM card not present or faulty
Red (solid) RF circuitry initialising or network registration fault
Table 2: Network Indicator.
Once a network connection has been established the Network Indicator reports the level of the received RF signal as well
as any network connection faults. The signal strength is indicated by the number of green flashes of the indicator within
an indicator period. Each indicator green flash will be followed by a short off time, an extended off time indicates the
end of the indicator period. So an indicator period starts with a green flash followed by up to 5 additional flashes, then an
extended off time, the cycle will then repeat. The maximum number of flashes in an indicator period is 6.
The indicator may be red during the extended off time following the green flashes, this indicates a network connection
fault. The indicator will flash red if a SIM card is not present and will be solid red if the RF circuitry is restarting, network
registration has failed or the RF signal level is too low for a connection.
When the unit is first switched on, or is reset the indicator will first light red, then flash red in sequence with the Status
Indicator, this is normal behaviour during boot-up and does not indicate a fault.
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