Installing The Fst; Figure 4-17: Platform Dc Input Power Connector Pin Functions - Eci Telecom NPT-1020 Installation And Maintenance Manual

NPT-1020 Installation and Maintenance Manual
4.6.2.3 Checking DC Voltage Polarity
To check DC voltage polarity:
1. Make sure the correct site grounding test has been passed successfully (see Grounding
Requirements).
2. Connect the DC input power to the RAP-4B.
3. Set all the RAP-4B circuit breakers to ON.
4. Use a DMM to test the voltage between the positive and negative contacts of each power cable.
The following figure identifies the functions of the power cable connector contacts assembled on the
cable end connected to the NPT-1020 platform, as seen when looking into the connector.
5. Make sure the voltage is within the allowed range (-40 VDC to -72 VDC), and that it has the correct
polarity.
6. Return all the RAP-4B circuit breakers to OFF.
7. Disconnect the RAP-4B input power sources.
8. Reinstall the RAP-4B front cover and fasten it with the two captive screws.

4.6.3 Installing the FST

Install the FST 50 mm below the fiber guide. If additional equipment is installed below it, such as another
NPT-1020 platform, an additional 50 mm must be left free between the FST and such equipment.
To install the FST in the rack:
1. Attach the FST to the rack rails and secure it using the four supplied screws, washers, and nuts.
2. Prepare the necessary fibers according to the site cabling diagram and the detailed cabling diagrams
or tables of each platform. See the safety information in
Supply Requirements.
3. Label the cables in accordance with the cabling diagrams or tables.
4. Thread the optical fibers into the conduits running along the front supports of the ETSI A rack, (or the
rack sidewalls in an ETSI B rack).
5. Push the button on the front panel of the FST to release the latch, and pull the FST towards you to
open it.
ECI Telecom Ltd. Proprietary

Figure 4-17: Platform DC input power connector pin functions

Work and Equipment Safety
Installing Equipment
and Power
4-18