User's Manual

Radio Activity S.r.l. 14 / 44
3. The DSP programs and checks IF peripherals. If the result is ok, the Radio Led “RX2” becomes green
and the DSP go to the next step. If the result is fail, the Radio Led “RX2” 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 on RX parts. Please contact Factory for repairing the unit.
4. The DSP calibrates the IF and internal DAC/ADC.
5. DSP requests to LINUX the EEP saved setup parameters. When all parameters are correctly received,
the Radio Led “RX1” becomes green and the DSP go to the next step.
6. Radio Led test. This test may be useful to check the real functioning of all led. All Radio Led are
switched on green for 1 sec. Then they are all switched on red for 1 sec, and again all switched on
green for 1 sec.
7. DSP startup phase is ended and the Radio Led are switched off.
The next operation of the startup is the radio calibration as described in the following paragraph.
3.2.3 Led during radio calibration
When LINUX and DSP programs are running and all the internal signals are checked by the FPGA, the
equipment starts the calibration/self test procedure. The procedure executes always a minimum set of
measurements to check the equipment basic functionalities (fast TX=>RX loop test). Many other automatic
tests can be required (distortion, audio response, deviation accuracy, XTAL filter responses, …) but, since they
blocks the equipment for some tens of seconds, their use has to be required via the setup tool. If these
optional tests are not required, the setup tool indicate the last value registered.
The self tests can be required at every time, not only after a reset, via the setup tool.
During the calibration/self test phase the Radio Led “TX2” indicates that:
∞ Red color, slow flashing => test is running
∞ Green color, slow flashing => test is finished with fail result
∞ Off => test is finished ok
If the result of a test isn’t good, the “TX2” led maintains the green flashing status also when the calibration
is finished to indicate a warning condition.
Note: a calibration fail is not necessary a failure indication. Since these test are very accurate and selective,
in many cases a failure indication can be due only to local disturbs received from the antenna or from a
temporary condition. Therefore this indication should be considered as warning state not as fail state. In case
of doubt, try to repeat the calibration test or contact Factory.
3.2.4 Radio Led during regular function status
Once booting and calibration/test phases are ended, the equipment starts normal operation. The default
channel is loaded into PLLs and the equipment search the other radio Network elements (e.g.: the Master