CB Svendsen FA-20, Manual

Page: 7 / 26

7
New Software:
The unique download facility, which in many years have been implemented and tested in FA-
products, is of course present in FA-20. FA-20 uses the newest version “
Safe-load ”, which
makes it possible to download new firmware safely and fast – in spite of possible interruption
of electricity supply or the GSM/GPRS connection. In connection with the data communication
– regardless cause and initiative of communication – the IT centre has possibility to download
new firmware to FA-20. After ended communication the FA-20 will reboot on the new firmware
and hereafter be running on the new firmware.
Antenna connection:
FA-20 is supplied with a SMA-connector for use of a short direct mounted whip-antenna or
other antennas with cable connection.
Signal lamps:
A
green and a red light emitting diode (LED) for external indication of operation station and
internally a green and yellow LED for installing purposes and easy troubleshooting. A simple
"Fast-track" service guide describes "step-by-step", how possible errors may be identified via
LED and corrected.
Key:
One key for activation of meter reading and subsequent dial-back.
Power supply: 230 VAC +-10%, 50 Hz. max. 50 mA.
Power consumption:
Max. 10 W, typically under 1.5 W
Power failure:
FA-20 is equipped with a special permanent memory type called F-RAM, which without power
can preserve its content. Log data and for example the latest monthly reading is always
stored in the F-RAM which does not need a battery to preserve its memory
FA-20 features a special integrated circuit with a lithium battery, a clock-circuit which purpose
is to keep the FA-20 clock running during power failures. In case of a power failure FA-20 will
stop normal operation, but before this happens, the battery operated watch will be updated
with the system watch of FA-20. FA-20 will return to normal operation without clock error
when the power returns, since the system watch of FA-20 is updated by the battery operated
watch at power up. Logged values will be generated and marked with ”Power failure” cf.
EDIEL.
In case the operator requests the power failure condition to be dialed back, the FA-20 may be
programmed to dial back upon return of the main power supply. In all circumstances the FA-
20 will update the IT centre about the power failure at the first available occasion. In
connection with this special dial-back the FA-20 unit applies random delay. This method
secures against overload of the IT centre and the mobile phone network.
FA-20 also registers both the time of the last power failure and power connection, besides the
total number of power failure and total time of power failure in minutes (possible to get further
information).
FA-20´s battery is placed in a socket, so replacement on the spot is easy. The expected
lifetime on a battery is at least 8 years with maximum 360 days of power failure.