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© Sealevel Systems, Inc. 12000 Manual | SL9245 10/2021
Serviceable Parts
Serial Port 3 Configuration
Serial Port 3 is configured as RS485 Half Duplex (2-Wire) No Echo.
Setting Location
Pin
RS485 Half Duplex
J12
N/A
Connect pins 2 and 3
SW1
T
3
ON
SW1
PU
ON
SW1
PD
ON
SW1
L
ON
SW1
L
ON
Input Current Protection Fuse
The fuse holder located at location F1 is located on the positive power input path of the 12000 carrier board.
To protect the user and the computer system from major system faults, the system is designed to have the
fuse fail if DC current of 30A or greater is present.
The 12000 carrier board uses an automotive style Mini-Blade Fuse (Littlefuse PN 0997030.WXN).
To replace the fuse:
1.
Grip the fuse and wiggle it back and forth while pulling up until the fuse slides out of the holder.
2.
Place the blades of the new fuse in the holder and press it straight down into the holder until the
blades are completely hidden by the fuse holder contacts.
Support the circuit bord underneath the fuse holder while removing or installing the fuse.
3
Termination, Pull-Up, and Pull-Down may not be necessary depending on the equipment which
the 12000 is connecting.
