Nortel SONET AccessNode Manual page 27

Procedure 2-2 (continued)
Measuring optical receiver performance
To establish traffic continuity in a point-to-point or ring system, the network
element user interface (NEUI) tool is used to set up simple synchronous
transport signal (STS-1) connections between the feeder (OC-3/OC-12)
optical circuit packs and the DS1, DS3, STS-1, or OC-3 tributaries.
Action
Step
1
DANGER
Risk of injury or damage
Read the warnings and precautions in Chapter 1 to
minimize any risk to personnel and equipment.
CAUTION
Clean optical connectors
Clean optical connectors to minimize signal attenuation and
test errors caused by impurities.
Note: Note STS-1 tributaries are supported only on a TN_BLSR shelf.
Action
If
this NE has a working DS3/STS mapper or STS-1
interface card
you are using a temporary DS3/STS mapper or STS-1
interface card for testing only
Connect the DS3/STS-1 transmission test set to the temporary BNC I/O card
in the upper section of the common-equipment shelf as follows:
• DS3 or STS-1 transmit (Tx) to the BNC In port
• DS3 or STS-1 receive (Rx) to the BNC Out port
Be sure that the cable is connected properly.
The proper connection of the DS3/STS-1 test set to the temporary BNC I/O
card is shown in Figure 2-1 on page 2-10.
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
DS3 tests, STS-1 tests, and optical in-bay tests 2-9
—continued—
Then start at
step 3
step 1