Installation of the BDU
98-175666-A Chapter 2: Installation 2-28
2.5 Installation of the BDU
The following sections describe the installation and grounding of the BDU.
2.5.1 To install the BDU
To install the BDU, do as follows:
1. Slide the BDU into a 1U space in a 19” rack.
2. Make sure that the air intakes on the side of the unit are not blocked.
3. Support the BDU in the 19" rack with standard 19" rack rails or
19" shelf and mount the screws in each side through the holes in the front and fasten
the screws to the rack. Make sure that the unit is mounted securely according to the
requirements for your 19” rack.
4. Connect all cables. See Connector panel of the BDU on page 3-1 for a description of
the BDU connectors.
The BDU has an additional LAN connector at the front, for accessing the service port from
the BDU front panel.
2.5.2 To ground the BDU
1. Make sure that the grounding requirements are met. See the appendix Grounding and
RF protection on page E-1 for details about grounding.
2. At the BDU end, connect the shield of the ADU cable to ship ground.
3. Make sure the rack is connected to ship ground.
To ensure that the BDU is grounded – also if the ADU cable is disconnected from the BDU,
connect an extra ground wire from the rack to the ground stud on the BDU. This ground
wire must be a heavy wire or braid cable with a larger diameter than the coax cable.
2.6 Installation of the modem
The following sections describe the installation and how to ground the modem.
2.6.1 To install the modem
To install the modem, do as follows:
1. Slide the modem into a 1U space in a 19” rack, preferably directly below or above the
BDU.
2. Mount the screws in each side through the holes in the front and fasten the screws to
the rack. Make sure that the unit is mounted securely according to the requirements for
your 19” rack.
Make sure that the ventilation grills at the sides of the unit are not blocked.
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