5.3: Measuring Optical Power
Issue 9, May 1999
FNC and FNC Customer Use Only
Vol. ll, Page 480.5-10
Maintenance and Trouble Clearing
FJTU-320-515-480
Before You Start
•
Make sure all connectors are cleaned before measuring. Optical connector
performance can be affected by dust.
•
Before you begin measuring, verify that the channel to be measured is not
carrying traffic.
•
Make sure the following required equipment is available: Optical Power
Meter with Sensor (Ando AQ-1135E/AQ-1965 or equivalent) and Optical
Fiber Test Cord (Fujitsu H660-5381-U920 SM, PC/PC or equivalent) with
the same type connectors used by power meter and optical units.
DANGER:
Never look into the end of a fiber pigtail or a fiber cable. Permanent eye damage or
blindness can occur very quickly if laser light is present.
Procedure
Step 1
Disconnect the optical fiber cord from the transmitter side of the HC1A/MC6A
unit.
Step 2
Attach the protective cap to the optical fiber cord. (If no fiber cord is connected,
remove the protective cap from the unit and keep the protective cap in the storage
box on the shelf for future use.)
Step 3
Clean the optical connector on the HC1A/MC6A unit.
Step 4
Set the range on the optical power meter (see Figure 5-13) to match the expected
power level as shown below:
•
MR units = –15.0 to –8.0 dBm
•
LR units = –5.0 to 0.0 dBm
Step 5
Clean the connectors on the optical fiber test cord.
Step 6
Connect one end of the optical fiber test cord to the sending side of the HC1A/
MC6A unit optical connector and the other end to the optical sensor used with the
optical power meter (see Figure 5-13).
Step 7
Plug the unit into the shelf.
Step 8
Record the optical power meter reading.
Summary of Contents for FLM 150 ADM
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