Simrad GC80 - Page 120

Simrad GC80/GC85 Dual Gyro Compass
112 20221537 / D
JUMPER DEFAULT FUNCTION DESCRIPTION
J24 1-2 short
Setting receiving port
of CPU on SCC board
1-2 short = An optional serial
signal is received.
3-4 short = The serial signal
output from SCOIF
board received.
NOTE
: Never use both jumpers
at the same time!
J25 Short
Software install or
internal communication
with "NO.1 Gyro
compass"
Short: Internal
communication with
"NO.1 Gyro compass"
Open: Software is installed in
SCC board
NOTE:
A damage will be given
to a circuit if software is
installed while this
jumper has been short.
J26 Short
Software install or
internal communication
with "NO.2 Gyro
compass"
Short: Internal
communication with
"NO.2 Gyro compass"
Open: Software is installed in
SCC board
NOTE:
A damage will be given
to a circuit if software is
installed while this
jumper has been short.
J27 1-2 short
LOG contact signal
selection
Input port：GTERM board,
TB1: "SL"
1-2 short = 200p.p.n.m.
3-4 short = 400p.p.n.m.
NOTE
: Never use both jumpers
at the same time!
J28 1-2 short
"Rate of turn" Analog
signal level selection
Output port: GTERM board,
TB1 "1RT～3RT"
1-2 short = Output voltage 0v to
±5v DC or 0v to ±10v
DC
3-4 short = Output voltage 0v to
+5v DC or 0v to
+10v DC
NOTE
: Never use both jumpers
at the same time!