TM 5-3610-253-14
d.Light barrier. Safety system, when activated, directly controls the operation
of the knife. The light barrier consists of two halves.
(1) Emitter (LSV). Located on the right side. Contains infrared
transmitter diodes which emit light pulses at a frequency of 1000 Hz. Three diodes
are wired in series with diodes 1, 3, and 5 working against the phase of diodes 2,
4, and 6. Input to the LSV comes from the receiver half (LS).
5-314
