Simplex 4010 Service Manual

D-5
The following table identifies the two possible LED displays for a Class B fiber
optic circuit.
LED3, which is the Class A Fiber LED does not have significance for a Class B
circuit.
Table D-2. Class B LED Displays
LED Pattern Possible Cause/Troubleshooting
RX
TX
LED1 LED2
Indicates one of the following:
• There is a problem with the fiber running between U18 on the fiber receiver
card and U19 on the fiber optic transmitter card.
• There is a problem with both fibers (i.e., both fibers are damaged or cut).
• The fiber cables were wired incorrectly (i.e., TX to TX and RX to RX).
Make sure that U18 on the receiver connects to U19 on the transmitter.
Likewise, make sure U16 on the receiver connects to U20 on the
transmitter.
RX
TX
LED1 LED2
Indicates a problem (damage, break, bad connectors) with the fiber running
between connectors U16 on the receiver and U20 on the transmitter card.
Class B LED Displays
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Simplex 4010 Specifications

General

Display	LCD
Power Supply	120/240 VAC, 50/60 Hz
Manufacturer	Simplex
Model	4010
Battery Backup	24 VDC
NAC Outputs	4
Max Detectors	250
Max Modules	250
Operating Temperature	0°C to 49°C (32°F to 120°F)
Humidity Range	Up to 93% RH, non-condensing