Sailor 6248 VHF, Руководство по установке

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Cable requirements
98-132904-C Appendix B: System configurations B-35
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Cable 11
LAN connection.
Ethernet cable with screen and RJ45 shielded plugs.
Cable 16
The CAN bus cable must be of a paired and twisted type designed for the purpose. The
CAN bus cable can handle signals up to 100 m away from the VHF to further Control
Speaker Microphones (CSM).
Only 1 CSM can be connected to the VHF with a CAN bus cable of max 100 m if the cable
dimension is 0.5mm
2
of each cord. Other combinations with more CSMs must be
calculated seriously before installing the cable. If more CSMs are connected, the CAN
cable of 0.5mm
2
can handle the signals up to max. 100 m. The only restriction is the
power supply for the connected CSMs.
The voltage drop along the cable increases with the length of the cable. Separate
supply cables can be installed in parallel with the CAN cable to reduce voltage drop in
long cables. The maximum allowed voltage drop from VHF to CSM is 2 VDC. It means
1 VDC forward and 1 VDC return.
Max current consumption for each CSM is 0.5A.
Formula to calculate DC resistance in a wire:
L = length of wire one way, in metre
a = cross section of the wire in mm
2
Contact your local dealer for further information for correct installation.
Pin number Pin function Wire color
1 Tx+ white/orange
2 Tx- orange
3 Rx+ white/green
4 Not connected blue
5 Not connected white/blue
6 Rx- green
7 Not connected white/brown
8 Not connected brown
Table B-7: Pin allocation, LAN connector
R 0 017

L

a

=