Furuno FV-110GX, Руководство оператора

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Installation of the ACU
2-27
2.4 Installation of the ACU
The following sections describe the installation and grounding of the ACU.
When selecting a mounting location, keep in mind the following points:
• Locate the 19” rack where maintenance can easily be done.
• Separate the 19” rack 30 to 50 cm from a bulkhead.
• Take particular care regarding the temperature inside your 19" rack. The temperature
should not exceed the temperature in the unit's specifications sheet. By installing a fan
or spacing the units adequately, you can reduce the rack's ambient temperature.
2.4.1 To install 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 using the optional support
bracket according to the requirements for your 19” rack.
3. Connect all cables. See Interfaces of the ACU on page 3-1 for a description of the
ACU connectors.
2.4.2 To ground the ACU
To ground the ACU do as follows:
1. Make sure that the grounding requirements are met. See the appendix Ground and RF
protection on page A-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.
Important
Make sure that the ventilation grills at the sides of the unit are not
blocked.
Figure 2-24: Ground stud, ACU