Airport Systems
SG-60 High Intensity Strobe System 2-33 Manual EPM-00000019 Rev A
2.6.5 Verify Photocell Operation Connected to Controller
1. Verify proper mounting and orientation of photocell. Photocell shall face
toward the polar sky (e.g., North in the northern hemisphere), not toward
the sun.
2. Set LOCAL / REMOTE switch to REMOTE.
3. Verify that the correct Mode status LED (DS25 - DS27 Figure 2-10, Item
3, Page 2-25) is lit red according to the ambient light conditions (during
normal daylight, DS25 shall be lit red).
4. Completely cover photocell (use a glove or hat, for example).
5. Verify Night Mode status LED DS27 is lit red.
6. Verify all other LEDs are in normal operating condition.
7. Verify that the Tower Lighting System is operating in normal night mode
per 2.6.4.3. (Steps 2 through 6 only)
8. Uncover the photocell to expose it to ambient light.
9. Verify Mode status LEDs are in normal status for current ambient light
conditions (during normal daylight, DS25 shall be lit red and DS26 and
DS27 shall be unlit).
2.6.6 Verify Photocell Operation Not Connected to Controller
15. Disconnect connector TB2 from PCB1 in the Master Controller.
16. Verify all Flashhead LEDs (DS1 - DS24) are lit red.
17. Verify Photocell status LED DS28 (Figure 2-10, Item 3, Page 2-25) is lit
red.
18. Verify Photocell alarm LED DS30 (Figure 2-10, Item 5, Page 2-25) is un-
lit.
19. Verify all Flashheads are operating in Day mode (maximum brightness).
The Flashheads will very slowly drift out of sync.
20. Reconnect connector TB2 to PCB1 in the Master Controller.
21. Verify that the Flashhead Status LED for each Flashhead on the tower is
lit green (including any AOL). Unused Flashhead status LEDs shall be
off. (DS1 - DS24: Figure 2-10, Item 4, Page 2-25)
22. Verify Photocell status LED DS28 (Figure 2-10, Item 3, Page 2-25) is lit
green.
23. Verify Photocell alarm LED DS30 (Figure 2-10, Item 5, Page 2-25) is lit
green.
If the system passed all of the tests in Sections 2.6.3 - 2.6.6 above, the Master
Controller, photocell and tower wiring were installed properly and the system is ready