Nortel SONET AccessNode Manual page 70

3-8 Tributary and optical tests for VTBM rings
Procedure 3-2 (continued)
Performing optical interface receiver sensitivity tests
Tools and materials
See Figure 3-1 on page 3-9 for the test setup. Make sure you have the
following tools and materials:
•
If testing OC-12 ring optics with DS1 or DS3 test equipment
•
•
•
If testing OC-12 ring and OC-3 tributary optics with SONET test equipment
•
•
•
AccessNode Vol 3B 323-3001-221 Issue 2.0
one (1) optical power meter (for 1300 nm and 1550 nm optics)
DS1 or DS3 transmission test set and two (2) appropriate patch cords
(daisy chaining 14 DS1s also requires an additional 13 patch cords
compatible with the cross-connect panel)
two (2) high-precision variable optical attenuator (VOA) (for example,
HP8156A) and four (4) single-mode optical patch cords, or
two (2) single-mode optical patch cords with miniature variable optical
attenuator (mVOA) and two (2) single-mode optical patch cords
SONET transmission test set (transmit/receive)
four (4) high-precision variable optical attenuators (VOA) (for example,
HP8156A) and eight (8) single-mode optical patch cords, or
four (4) single-mode optical patch cords with miniature variable optical
attenuator (mVOA) and four (4) single-mode optical patch cords
DANGER
Risk of personal injury
Avoid direct exposure to laser beams or fiber.
Follow the precautions listed in Chapter 1 when
handling optical fibers.
CAUTION
Risk of damaging circuit packs
Avoid touching any components on the printed
circuit board. Electrostatic-sensitive devices can be
damaged by electrostatic discharge. Always ground
yourself before handling the circuit pack.
—continued—