Junction Box - Furuno VR-3000 Installation Manual

1.4 Junction Box

The Junction Box, optionally available with the VR-3000S, provides for connection of digital,
serial and analog equipment, and three units may be connected. The No. 1 JB has the following
channels: Eight channels of IEC 61162 (two IEC 61162-2 and six IEC 61162-1), 64 channels of
digital, and 16 channels of analog. The No. 2 and No. 3 JBs have 64 channels of digital and 16
channels of analog, respectively.
1.4.1 Mounting considerations
The JB can be mounted on a bulkhead or a deck. For bulkhead mounting, be sure the mounting
location is strong enough to support the weight of the unit. Mount the JB considering the
following points.
• Locate the unit out of sunlight and away from heat sources because of heat that can build up
inside the cabinet.
•
The mounting location should be away from places subject to water splash and rain.
•
Choose the location considering cable lengths, connection of relevant sensors and
associated devices, and easy access to connectors inside.
• A magnetic compass will be affected if the JB is placed too close to it. Observe the compass
safe distances on page i to prevent deviation of a magnetic compass.
• Observe the recommended service clearances shown in the outline drawing.
1.4.2 Mounting dimensions, mounting procedure
Fasten the unit to the mounting location with M10 bolts or ø10 coach bolts.
6
Mounting dimensions of junction box