Measuring Optical Levels; Table 6-3: Measured Optical Levels - Eci Telecom NPT-1020 Installation And Maintenance Manual

NPT-1020 Installation and Maintenance Manual
No. Description of inspection/check
Provide DC supply voltage via the INF-B1U slot PSA to the RAP (-40 V to -75
11
V).
Provide DC supply voltage via the INF-B1U on slot PSB to the RAP (-40 V to
12
-75 V).
Power on the platform.
13
Check the proper operation of both RAP power sources by
14
disconnecting one source at a time.
Check the communication between the NPT-1020 platform and the LCT-APT
15
via the MNG Ethernet interface.
Check the proper operation of all fans.
16
Check LED operation using the LED TEST option in the LCT-APT.
17
Check slot assignment for all relevant cards and modules.
18
Check there are no abnormal alarms.
19

6.2.3 Measuring Optical Levels

These measurements check optical signal levels at the various equipment ports. Before performing any
other commissioning test, proper optical levels within the limits specified in the NPT Product Line System
Specifications must be achieved for each optical component.
Perform these measurements using an OPM configured according to the wavelength at the measurement
port. For reliable measurement, do not connect the OPM directly to a port but use a two-meter fiber. When
measuring high optical power levels, use attenuators to ensure that the power does not exceed the
maximum OPM input level.
The following table illustrates a typical data form for optical level measurements.

Table 6-3: Measured optical levels

Slot Module type
ECI Telecom Ltd. Proprietary
Port Wavelength
Commissioning Tests
Results
Optical transmit Receive level
level (dBm) (dBm)
6-3