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6.3.2.5.
If on entering the alignment mode indication changes for flickering triply with white (Two
Low) it means that the received signal is less than the lower threshold of self-regulation and measures
should be taken to increase the signal (try to define the initial direction to the reflector more accurately,
remove possible obstacles from the beam path, use more reflectors, check whether the monitored
distance is less than the maximum possible value and so on).
6.3.2.6.
The second stage of adjusting the position of the transceiver unit is to search for the ideal
direction to the reflector when the received signal is as high as possible. For doing so, use a
screwdriver to slightly change the position of the transceiver unit tightening or loosening the alignment
screw in the plane selected for adjusting (for example, turning the screw in increments of quarter turn).
Continually monitor the indication performance. If during one step the LED flickers with red (More) or
triply with red (Overwriting) then keep turning, otherwise, if the LED begins flickering in amber (Less)
and after a number of steps indication enters the mode of flashing with blue and white alternately
(Close) or with white only (Far) then turn the screw the other way.
6.3.2.7.
If after a number of steps when the signal increased and was rewritten it begins reducing then
it is necessary to reach flashing steadily with white (Far) to ensure that it was not a local maximum of
the signal. Only after that step back to the Very Close condition (stable blue). Now the position of the
transceiver unit can be aligned in the other plane.
6.3.2.8.
If you failed to return the transceiver to the Very Close condition, for example due to position
of the transceiver being changed in the both planes simultaneously, then the value of maximum signal
determined during the entire period of alignment can be reset to zero by exiting the alignment mode
and then returning to this mode again. Of course, after that the entire adjustment procedure needs to be
repeated.
TIP: On completion of adjusting position of the transceiver unit in a particular plane we advise you to
find the midpoint of the flat top of the radiation pattern. For doing so,
−
Being in the Very Close state loosen the alignment screw until the detector starts being in the
state Close;
−
Tightening the screw and counting the number of turns get again through the Very Close state
until the state is Close indicating the other side of the top of the radiation pattern;
−
Loosen the screw turning it half the number of steps counted during the previous operation.
Such fine adjustment will provide maximum stability for the detector in case of deformations of the
building in operation.
6.3.2.9.
The third and final stage of the adjusting the position of the transceiver unit is quitting the
alignment mode with overwriting the installation parameters in the non-volatile memory of the
detector. The alignment mode can be switched off only after adjusting the position of the transceiver
unit in both planes and when the condition is Very Close (exceptionally Close). After setting the DIP
switch “1” off the detector for approximately a minute remains in the transient mode (and should be
kept motionless) quitting this mode automatically by itself after revising and overwriting all the
installation parameters to the non-volatile memory.
6.3.2.10.
If the detector from the transient mode proceeds to the Norm mode then the alignment works
are completed and you can proceed to testing the detector. If, otherwise, the detector from the transient
mode enters the Trouble mode it means that the alignment parameters written to the non-volatile
memory fall out of the allowed ranges and all the alignment procedure should be repeated following
the given instruction more carefully.
6.3.3.
Alignment Using an IPDL-152 Test Station
6.3.3.1.
When an IPDL-152 tester is connected to the detector being in the alignment mode the LCD
of the tester displays information about current values of the gain and received signal, about the