15 April 2021 - Rick Wakeham
Featured in: Product information and OPTEX tech tips, Tech Tip, Intrusion detection
A common occurrence with stacked beams is that they do not align correctly, resulting in the beams not triggering when the beam is broken. This is down to ‘crosstalk’ between the beams. This means that each transmitter and receiver can not correctly identify its correct partner.
The OPTEX IR Beams can me mounted in a stackable setup. Typically, one set is mounted at waist height, with another set 0.5m above the first beam.
OPTEX’s IR beams are equipped with ‘beam frequency selection’, which can be utilised to avoid unwanted crosstalk that can occur when using multiple photo beams for beam stacking applications.
To select between 4 separate beam frequencies, use the switch provided, but ensure the receiver and transmitter that are facing each other are set to the same channel.
Always switch the frequencies TWO channels apart when stacking units on top of one another. See in the example below, channels 1 and 3 have been selected.
*Please note not all OPTEX beams can be stacked. Beam ranges that can be stacked are TF, QDM and QDP. Also note, more than double stack application is not possible.