User's Manual

Radio Activity S.r.l. 13 / 44
Slow
green
flashing
DPS clock is ok
Fast
green
flashing
DPS clock is present but unlocked
fast
red
flashing
DPS clock is absent
TX1: it reports the 20MHz LINUX clock status as follow:
Slow
green
flashing
LINUX clock is ok
Fast
green
flashing
LINUX clock is present but unlocked
fast
red
flashing
LINUX clock is absent
TX2: it reports the 12,8MHz Reference clock status as follow:
Slow
green
flashing
Reference clock is ok
fast
red
flashing
Reference clock is absent
Finally, a correct equipment startup should happen as follow:
1) Supply led becomes green pressing the on/off button
2) RX1 flashes fast red/green for less than 1 sec
3) RX1 – RX2 – TX1 – TX2 led continue to alternate on/off red/green, moving left and right for 10-15 sec
4) RX1 – RX2 – TX1 – TX2 led go off for 1 sec and then start to indicate the DSP booting phase as
described in the next paragraph
3.2.2 DSP booting phase
Once the LINUX O.S. is ready, the DSP starts. This condition is indicated by all Radio Led off condition and the
ending of the alternate on/off red/green, moving left and right indication.
DSP starts to check all its internal peripherals and report results on the Radio Led, step by step, as follow:
1. It verifies the FPGA to DSP communication and the status of all essential internal signals. If the result
is ok, the Radio Led “TX2” becomes green and the DSP go to the next step.
2. The DSP checks audio peripherals, closing them in both digital and analog loops. If the result is ok,
the Radio Led “TX1” becomes green and the DSP go to the next step. If the result is fail, the Radio
Led “TX1” becomes red and the DSP stops. The LINUX processor should start the DSP again in 5-10
sec. This condition (DSP continuous restarting) is maintained until this test is surpassed. If this
condition appears, it’s very probable an HW problem. Please contact Factory for repairing the unit.