Bosch DS484Q Installation Instructions Manual page 13

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4.2 Alignment
4.2.1 Description
Precise, correct alignment is critical for
these systems to operate effectively.
The first procedure (Section 4.2.2 Scope
Alignment on page 14) is a visual alignment
and is not precise. Use one of the
additional procedures to complete the
alignment.
Aligning a paired transmitter and receiver requires a
coarse, or visual, alignment followed by a fine
alignment.
Coarse Alignment
In the coarse alignment, if the installed devices do not
face each other directly, the upper optical module and
the lower optical module on each device are manually
turned toward the opposite device. Then the opposite
device is viewed through the scopes on the upper and
lower optical modules while the horizontal and vertical
angles are adjusted, using the turntable and the
adjustment screws. Refer to Section 4.2.2 Scope Alignment
on page 14.
Fine Alignment
The detectors have three possible fine alignment
methods: Voltmeter, Level LED, and Sound.
Alignment interruption sheets (Figure 19) are used in all
three procedures to cover all optical modules in the
installation except the pair that are being aligned.
Select a procedure based on the conditions and
considerations of the specific installation. Refer to
Table 9.
Figure 19: Alignment Interruption Sheet
Bosch Security Systems, Inc. | 7/05 | 4998138530F
DS484Q/DS486Q | Installation Instructions | 4.0
Table 9:
Alignment Procedure
Voltmeter
(Refer to Section
4.2.3 Voltmeter
Alignment on
page 15.)
Level LED
(Refer to Section
4.2.4 Level LED
Alignment on
page 15.)
Sound
(Refer to Section 4.2.5
Sound Alignment on
page 15.)
Setup and Alignment
Fine Alignment Considerations
Considerations
•
Requires a voltmeter and a
screwdriver
•
Works well at any distance
between the transmitter and
receiver
•
Requires repeated
observation of the voltmeter at
the receiver
•
Most accurate
•
Might require two people
•
Requires only a screwdriver
•
More difficult to do when the
transmitter and receiver are
installed far apart
•
Requires repeated visual
observation of the level meter
on the receiver
•
Might require two people
•
Requires only a screwdriver
•
Works well at any distance
between the transmitter and
receiver
•
Does not require visual
observation of the opposite
device
•
Difficult to do in a noisy
environment
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