Chapter 2: Installation Procedures 6-2-3
ST290 Instrument System Owner’s Handbook
Table 2-1: SeaTalk connections
Table 2-2: SeaTALK
2
connections
Procedure
Using Figure 2-2 as a guide, run the SeaTalk and SeaTALK
2
cables from
the intended location of the DPU to the intended location of the nearest
instrument or keypad on each bus. If necessary, SeaTALK
2
can comprise
two sections (as shown in Figure 2-2 ). Remember that the total of the
Load Equivalency Numbers (LEN) of the products connected to
SeaTALK
2
must not exceed 100 (see Section 6, Chapter 1 for details).
Run SeaTalk and SeaTALK
2
cables as appropriate, between the intended
locations of the remaining products, so you can to daisy-chain the
products together (as in Figure 2-2 ).
At the intended location for each ST290 product, take the following
action:
• If you are using pre-made cables, coil up the cable to await connec-
tion.
• If you are using unterminated cable, leave two cable ‘tails’ each
approximately 2 ft (600 mm) long, to facilitate future connection.
Connector blocks can be used to connect to spurs where appropriate.
Always fit a SeaTALK
2
terminator at each end of the SeaTALK2
bus.
Wire Function
Red 12 V +
Uninsulated 12 V -
Yellow Data
Wire Function
Shield Screen
Red 12 V +
Black 12 V -
White Signal line high
Blue Signal line low
81183_2 S6.book Page 3 Wednesday, May 7, 2003 11:27 AM
To Next Page
Loading...
