User's Manual

Radio Activity S.r.l. 12 / 44
slow flashing
green
=> the PPS signal is present and locked (for 1 sec every 9 sec)
slow flashing
orange
=> the PPS signal is present but not locked
slow flashing
red
=>
warning: the PPS signal is
not
present
fast flashing
red
=> fail: the RX main is not functioning
ALL
LED
orange for 1 sec every 9 sec => The TRX is not active (in a 1+1 assembly only)
These led report also the equipment status during the boot/startup phase; see the paragraph below for a
detailed explanation.
3.2 Radio status led
The “RX1 – RX2 – TX1 – TX2” led assume different meaning during the functioning. There are four main
conditions where they give different groups of information: 1) LINUX booting state, 2) DSP booting state, 3)
radio calibration/self test state, 4) regular function state, 5) switching off, 6) maintenance state.
3.2.1 LINUX booting status
Pressing the power on/off button for at least 250ms, the equipment is
powered on and starts to load programs.
The FPGA is the first internal device that starts its job testing all internal
clocks and other essential signals. The RX1 – RX2 – TX1 – TX2 led, directly
managed by the FPGA, give indications about the HW status until the
LINUX processor is running when the Ethernet connection isn’t
available.
If all internal signals are ok, these led alternate green and red lamping, moving from right to left (red) and
vice versa (green) indicating the LINUX O.S. start up phase. This condition appears until the LINUX and DSP
SW are running.
In the case the running condition doesn’t appears (wait at least 10-15 seconds from the power on), and the
led continue to move left and right, the LINUX SW or the DSP SW may be corrupted or not valid, therefore
the equipment can’t operate.
If the condition that led continue to move left and right doesn’t appear in 1-2 seconds from the power on,
the FPGA has detected a fail in internal signals. In case of this situation, please contact the Technical
Assistance. For your knowledge, in this case these led are indicating the type of fail as follow:
RX1: a fast red/green flashing of this led indicates that there is at least one fail in the internal clock/signal.
The fail should be indicated by the other led as explained in the following.
RX2: it reports the 40MHz DPS clock status as follow: