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Fig 15
Fig 16
Fig 17
Alignment explained
Alignment can only be carried out after successful targeting.
When the detector is switched to 'alignment' the power of the beam is
adjusted automatically. The effect of panning or tilting is still indicated
by the LEDs but what they are indicating is different from when the
detector is switched to 'targeting'.
1. When the detector is switched to 'alignment' the LEDs fl ash to
indicate that signal optimisation is in progress.
2. During the alignment procedure:
•
red LED fl ashes = beam is moving from the shaded
area (see Fig 15) to the centre of the refl ector
•
amber LED fl ashes = beam is moving away from the centre
of the refl ector
The objective is to align the detector such that the LEDs stop fl ashing
and any adjustment (ie, any turn of the thumbwheels) will cause the
amber LED to fl ash.
Aligning step by step
1. Set the mode switch to the middle position—'alignment'.
The detector will automatically optimise the infra-red beam
strength and receiver sensitivity. Progress of optimisation is indi-
cated by the LEDs on the front of the detector.
• Flashing red LED
The detector is receiving too high a signal and is attempting to
reduce the infra-red power output. The LED should extinguish
within 30 seconds*.
• Flashing amber LED
The detector is receiving too weak a signal and is attempting to
increase the infra-red power output. The LED should extinguish
within 30 seconds*.
• Flickering red/amber
This may occur when the detector is seeking the optimum set-
ting for the infra-red power.
• LEDs off
The detector has optimised the infra-red power and receiver
setting for the current orientation of the beam detector and
refl ector.
*If the LED does not go out in 30 seconds the installation should be
checked before further alignment and calibration work is carried out.
Repeat the targeting process described on page 13.
Leave the mode switch in 'alignment' for the next stage of the align-
ment procedure,
14
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