Installation of the ACU
3-24
Chapter 3: Installation
98-146706-A
3.4
Installation of the ACU
The following sections describe the installation and grounding of the ACU.
3.4.1
To install the ACU
A cable relief bracket is already mounted when receiving the ACU. The cable relief is a
simple system to secure cables with cable strips. It offers a number of holders to which you
can secure the cables from the ACU.
To install the ACU, do as follows:
1. Slide the ACU 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. Make sure that the unit is mounted securely according to the requirements for
your 19” rack.
3. Connect all cables. See
on page 4-1 for a description of the ACU
connectors.
For information about wiring DC power see
For information about power source and power cable requirements see
3.4.2
To ground the ACU
To ground the ACU 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
ACU end. Use a short cable from the ACU 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 ACU 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 ACU. This
ground wire must be a heavy wire or braid cable with a larger diameter than the coax
cable.
Figure 3-22: Ground stud, ACU
SAILOR900Ka-IM-98-146706.book Page 24 Thursday, July 16, 2015 11:07 AM
