Rockwell Automation 2090-xxx Fiber Optic Cable Installation and Handling Instructions - Manual (Page 17)

Fiber Optic Cable Installation and Handling Instructions 17
Publication 2090-IN010C-EN-P – April 2005
System Field Testing Verify Receiver Power
Verify receiver power as outlined below:
Figure 11 Field Testing Receiver Power
1. Inspect and clean the ends of the cable under test.
2. Disconnect the cable to be tested from the receiver of the Drive or
module.
3. Put the Source into Continuous light mode. High power output.
4. Turn on optometer and select appropriate wavelength.
5. Put the meter into the absolute power measurement mode(-dBm)
6. 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
7. Read the value off the meter.
8. Verify that the power is within the range specified for a receiver in
the SERCOS attenuation table.
SERCOS
Drive or
Module
Transmit
Optometer Set to measure
power in dBm
Cable under Test as installed
SERCOS
Drive or
Module
Receiver