4. Tone indicator
2) A "beep" tone is issued from the receiver approximately 5 seconds after the lock spacer is inserted 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 lock spacer 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.
5. Response time changeover function
(Dual response time system)
And-gated response time and OR-gated response time can
be set separately.
1) An object passing through the beams faster than the set
response time is undetected.
2) Adjust response time a little slower where the units may
be affected by many birds.
Note) Set And-gated response time shorter (faster) than
Or-gated response time.
6. Environmental Module
The environmental signal is initiated if the beam reception
level is reduced to approx 25% or less.
The module "Watches" for a gradual degradation of the
beam reception which is indicative of extremely poor
weather conditions.
7. Beam selector
Use when beam alignment is adjusted.
Only the beam reception level of the beam that is selected
by the beam selector is indicated on sensitivity attenuation
LED, Sound check tone and monitor output.
When a lock spacer is inserted this function is canceled and
sensitivity attenuation LED lights regardless of positioning
of the selector even when either side of beam is attenuated.
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 when a lock spacer
is inserted.
2. Beams are mis-aligned and sensitivity
attenuation LED lights.
1. Remove any blockage items or ensure
hand is not breaking beam and insert a
lock spacer again.
2. Check beam power setting at transmitter
with cover off and re-adjust beam
alignment.
Test / Signal
Beep 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
if receiver cover is attached.)
●
Beam alignment
ON
Lock spacer detached.
For approx. 5 min.
after gain is locked.
Tone is linked to alarm LED. Both trip simultaneously.
●
About 5sec. after the
lock spacer is inserted
Short tone indicates lock is set.
Continuous tone (20sec.) indicates readjustment.
●
ON
ON or OFF
Walk test
Auto-gain lock
Upper
Lower
(Set at factory)
→
→
And-gated (all beams interruption)
0.3
0.4
0.5 (sec.)
0.035
0.1
0.2
(Set at factory)
Response time adjustment (And)
Or-gated (either side beams interruption)
SW
Response time adjustment (Or)
Response
time
0.1
0.2
0.3
0.5
Run at full speed
Walk with quick steps
Crawling
Response : 0.05sec.
Response : 0.3sec.
Response : 0.5sec.
(Set at factory)
(sec.)
⑥
