2. COMPONENTS DESCRIPTION AND CONNECTORS
FOL429-P Hardware Manual
9
Interconnection of the optical fibre
Connect the TX ST-connectors of the FOL429-P-T unit with the RX ST-
connectors of the FOL429-P-R unit using a 62,5µm/125µm multimode gradient
index optical fibre.
The optical output of the FOL429-P-T [Out Ch. 0..7] should be connected to the
optical input of the FOL429-P-R [In Ch. 0...7] and the optical output of the
FOL429-P-T [Out Ch. 8..15] should be connected to the optical input of the
FOL429-P-R [In Ch. 8..15]
On the receiver part of the optical connection, a LED (Line OK) indicates that the
input power of the optical link is high enough, and the optical parameters are in
valid ranges.
2.4 Power Supply, internal battery / battery charger
The FOL429-P can be supplied from an external power supply, or from the internal
battery. Whenever the external power supply is connected, the charge of the battery
starts. During the charge of the battery an LED illuminates. If the battery capacity
becomes low, the low battery LED illuminates. In this case the external power supply
should be connected to supply the FOL429-P and charge the battery. The following
figure illustrates the different power paths in the FOL429-P.
power path and
battery charge controll
V
IN
=15..28V
DC
, I
min
=1,3A
internal
LiIon battery
~20Wh
external
DC-power
supply
FOL1553-P
source and sink
power path
external supply
p
o
w
e
r
p
a
th
c
h
a
rg
e
power path
internal battery
Figure 2-6: FOL429-P Power supply overview
The FOL429-P system operation time with the internal battery is dependent from the
operation condition (load/ number of channels,..) and from the FOL429 Type (RX/TX).
The typical operation time is listed in the Technical Data chapter.
The Low Battery LED will illuminate approximately in the last 2..10 min before the
integrated security circuit of the battery will disconnect itself from the FOL429-P.
In this case, a correct data transmission can’t be guaranteed.
The charging of the internal battery starts immediately when the external DC power
supply is connected. The charging time is depending whether the FOL429-P is switched
on or off and on the operation conditions of ARINC429 interfaces.
FOL429-P
Internal
Lithium Battery
