Rockwell Automation 2090-xxx Fiber Optic Cable Installation and Handling Instructions - Manual (Page 8)

8 Fiber Optic Cable Installation and Handling Instructions
Publication 2090-IN010C-EN-P – April 2005
Fiber Optic Cable Attenuation Measurements
1. Inspect and clean the ends of the reference cable.
2. Securely connect appropriate reference cable corresponding to the
type of cable to be tested.
• POF reference cable used for testing POF cable
• HCS reference cable used for testing HCS cable
Figure 7 Zero dB Reference
3. Turn on light Source
4. Turn on optometer and select appropriate wavelength.
5. Verify Output Power
a. POF reference cable -7.5dBM to -3.5dBM
b. HCS reference cable -18dBM to -10dBM
Note: If output power is out of range, verify that the source has fresh
batteries and proper calibration.
6. Set the zero db reference for the optometer. (see optometer
reference manual)
Cable Attenuation Measurement
1. Inspect ends of cable for proper termination. Clean ends of fiber.
2. Turn on light Source
LED Light Source
650nM nominal Optometer Set to 0dB
reference
1 meter reference