Nortel SONET AccessNode Manual page 29

Procedure 2-2 (continued)
Measuring optical receiver performance
Step
3
4
Action
As shown following, connect the output of the VOA to the optical power meter.
Then connect the input of the optical attenuator to the transmit (Out)
connector of the G1 OC-3/OC-12 circuit pack.
Optical
power
meter
Set the VOA for single-mode, proper wavelength operation.
CAUTION
Risk of damage to the optical receiver
For the NT7E02 OC-12 long-reach (LR) interface circuit
pack, received optical power must not exceed the following
safe level: −6.0 dBm. Refer to Site Installation Planning and
Engineering , 323-3001-200 in the Engineering,
Configuration, and Ordering Guide , Volume 1.
There are no damage levels for NT7E01 IR and LR,
NT7E02 IR, and NT7E05 IR and LR optical interfaces.
—continued—
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
DS3 tests, STS-1 tests, and optical in-bay tests 2-11
OC-3/OC-12
circuit pack
Optical
patch cords
Out In
Variable optical
attenuator
PC-10553
FW-10553
In
Out
LOS
Active
Fail