1139300 Shadow 8 User Manual
2-50 Installation and Checkout
The first IBI display stage cannot be cleared by simply aligning the misaligned beams. In
order to clear the alternate IBI display, you must correct the misalignment, then cycle power
to the Shadow 8.
Figure 2-25. Transmitter and Receiver Properly Aligned
Table 2-13. Consecutive Beam Alignment Requirement
Main Heads Shadow 8 Model
Required No. of Consecutive
Beams Aligned *
12.8 in. (320 mm) 7
17.5 in. (440 mm) 7
23.8 in. (600 mm) 7
30.0 in. (760 mm) 8
36.3 in. (920 mm) 8
47.4 in. (1200 mm) 8
59.9 in. (1520 mm) 9
Extension Heads
All models
2
If PT is funnel-shaped
light path, Shadow is in
alignment even if optic
heads are not
perfectly aligned.
Funnel-shaped
light path
Phototransistor
(PT)
Transmitter
Receiver
Light beams
Plane of
alignment