Description of characteristics and jumper settings
FOSTER RX boards can be programmed in different configurations by means of
the jumpers.
RX BOARD BEAM (preset by manufacturer)
Use all the jumpers that correspond to the number of receivers fitted on the
barrier (if the barrier has 4 double or single lenses, move jumpers to positions 3
and 4).
TX BOARD BEAM (preset by manufacturer)
Enable only the jumper that refers to the TX optics fitted on the barrier (for
example if the barrier has 4 beams, move the jumper to position 4).
AND
The selection of the ON mode enables to attain the random AND of two beams,
which means that an alarm is generated only if at least two beams generate an
alarm.
This applies to all the beams used both on transmitters and receivers.
This function can also be programmed remotely through the
0 Volt
command on
the terminal board.
SPEED TRIMMER
Trimmer for the adjustment of the tripping time (50 msec - 500 msec).
MASK TRIMMER
Trimmer to adjust the sensitivity of the anti-blinding device (generally preset by
manufacturer).
LEDS
If moved to position ON, this jumper enables the LEDs.
NOISE (RX)
This jumper has to be programmed if interference from transformers, inverters,
etc. is detected.
S. LOW: low signal (DISQUALIFICATION)
This jumper has to be programmed if intense mist is detected.
Note:
The S. LOW and MASK outputs provide a transistor NPN that is normally open
and closes towards 0V when the output is active.
Foster
– Installation and Use Manual
Page
15
of 16
