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Installation of the PIU
98-166784-A
Chapter 3: Installation
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Install
ation
3.5
Installation of the PIU
The following sections describe the installation and grounding of the PIU.
3.5.1
To install the PIU
To install the PIU do as follows:
1. Slide the PIU into a 1U space in a 19" rack.
2. Mount the screws in each side through the holes in the front and fasten the screws to
the rack.
3. Make sure that the unit is mounted securely according to the requirements for your 19"
rack.
4. Connect cables as shown in the figure
Connection between ADU, ACU and PIU
in
3.5.2
To ground the PIU
To ground the PIU do as follows:
1. Make sure that the grounding requirements are met. See the appendix
on page B-1 for details about grounding.
2. You must ground the ADU cable (coax cable, with an N connector at both ends) at the
PIU end. Use a short cable from the PIU to a grounding point in the rack and connect
the short cable to the ADU cable at this grounding point.
3. Make sure that the shield of the connector is properly connected to the rack.
4. To ensure that the PIU is grounded – also if the ADU cable is disconnected from the
ACU, connect an extra ground wire from the rack to the ground stud on the PIU. This
ground wire must be a heavy wire or braid cable with a larger diameter than the coax
cable.
Figure 3-21: Ground stud, PIU