Loop Info-Q-2-16
1
INTRODUCTION 2
SECTION 1 - HOW THE LOOP SYSTEM WORKS
4
SECTION 2 - LOOP INSTALLATION GUIDELINES
8
Underground Loop
Lead-In Wire or Cable
Loop Detector
Design Facts
2
2
2
2-3
4
4
5
5
6
6
7
8-9
10
Field of Sensitivity
Height of Detection
Field Cancellation Effect
Field Enhancement Effect
Loop Phasing
Electrically Reverse the Phase of a Loop
Loop Detection Field Interference and Loop Placement
Saw Cut Loop Guidelines
DoorKing Preformed Loop Guidelines
SECTION 3 - TYPICAL LOOP LAYOUT EXAMPLES
11
SECTION 5 - DOORKING LOOP DETECTORS AND ACCESSORIES
14
11
12
Slide Gates
Swing Gates
SECTION 4 - TROUBLESHOOTING LOOP SYSTEMS
13
13
13
13
13
Loop Diagnostics
Poor Connections
Shorted Loop Wire
Detector Adjustments
Summary of Contents for 9409 Dual Channel
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