7.
5. Tone indicator
2) A "beep" tone is issued from the receiver approximately 5 seconds after the cover is put into position.
This tone indicates the Auto-gain has been set. Refer to the chart below.
Note 1)
2)
3)
A tone is generated regardless of whether "beep" (alignment tone) switch is set to ON or OFF.
The auto-gain setting is locked in for approximately two weeks even if power is disrupted.
If the receiver cover is detached while power is supplied or if power is discontinued for longer than two weeks
(but cover left in place), the auto-gain automatically reset to maximum sensitivity. (Gain is automatically locked
with power re-supplied.)
This feature provides audible testing or signals for the following items.
7. Environmental Module
The environmental signal is initiated if the beam reception level
is reduced to approx 50% or more. The module "Watches" for a
gradual degradation of the beam reception which is indicative of
extremely poor weather conditions. NC or NO signal output is
selectable.
[Contact capacity 30V (AC/DC) 0.5A or less]
Tone
Indicates
Result
Cause
Remedy
Optimal sensitivity has
been set.
One pulse
(Beep)
OK
Continuous
tone (20
seconds)
Optimal sensitivity can
not be set.
NG
1. Beam is interrupted once cover is
replaced.
2. Beams are mis-aligned and sensitivity
attenuation LED lights.
1. Remove any blockage items or ensure
hand is not breaking beam if holding
cover in temporary position.
2. Check beam power setting at transmitter
with cover attached and re-adjust beam
alignment.
Test / Signal
Alignment tone switch
Other condition
Description
Reception strength monitored. Tone pitch increases as reception
improves.
(Note : No tone is given if sensitivity attenuation LED is lit or
