Cables; Mounting; Grounding; Selection Of Output Data Format - Furuno INTERFACE UNIT IF-2500 Operator's Manual

Mounting

This unit does not have power switch. If you
do not connect the IF-2500 to power
switchboard or circuit breaker, install an
external power switch (local supply), locating
it near the IF-2500.
All dimensions in millimeters.
For added support, use nuts, bolts and
washers instead of woodscrews.
Leave sufficient space at the sides and rear
of the unit for maintenance and servicing.

Grounding

To prevent mutual interface, run a ground
wire between the earth terminal on the unit
and ship's superstructure.

Selection of output data format

The output data format is selectable by
changing a jumper block; A for IEC61162-1
and B for NMEA. For example, to select
NMEA for J4, change the jumper block from A
to B on JP401 and JP402. Do the same on J5
thru J9.

Output

Jumper
J4 JP401/JP402
J5 JP501/JP502
J6 JP601/JP602
J7 JP701/JP702
J8 JP801/JP802
J9 JP901/JP902

Cable fabrication

Use the following cables (Japan Industrial
Standard cables) or the equivalents.
TTYCS-1 (Twisted pair cable)
Current loop or IEC 61162-1 signal
= 10.1 mm
Conductor
S = 0.75 mm
= 1.11 mm
CO-SPEVV-SB-C 0.2x2P
Current loop or IEC 61162-1 signal
= 10.5 mm
Conductor
S = 0.2 mm
= 0.6 mm
2
Factory setting
Current
IEC61162-1
loop
(A)
(B)
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Armor
Sheath
Shield
2
Vinyl sheath
Armor
Sheath
Shield
2