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3.2.4
LED Status Operation
The PCB-4000A features four Light-Emitting Diode (LED) indicators – three are operational, with
the fourth reserved for future applications. Each LED provides visual cues to the operational,
online, and offline status of the system.
Figure 3-5 illustrates the location of the LED indicators. Located on the top of the PCB-4000A
enclosure under a pivoting protective plate, view the LEDs by first loosening the captive screw
that keeps the plate in place, and then swiveling the plate to reveal the LED display window.
Operation and Adjustment Procedures
Figure 3-5. LED Indicators
3–6
PCB-4000A 1+1 Phase Combiner
Revision 2
MN-PCB-4000A
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