3. Maintenance
8
Output of log pulse signal
MNEA0183 signal is output from DATA 3 port with factory - default setting. Put short jumpers on JP5
instead of JP4 to output log pulse from DATA 3 post.
Table 3.3 Setting of JP4 and JP5
Jumper NMEA0183
Log
pulse
JP4 (2pcs.)
Connected
Removed
JP5 (3pcs.)
Removed
Connected
3.3 Battery Replacement
The battery is replaced with new one by following of the steps below.
1. Disconnect JP1 on NP board. See Fig. 3.3.
2. Use a desoldering tool to remove the battery from NP board.
3. Solder the replacement battery onto the board.
4. Fix the battery onto the board with silicone sealant.
5. Solder JP1.
CAUTION
(1) Replace the battery only with CR2450 - F2 ST2L (000-144-941).
(2) Never short + and - sides of the cell.
(3) The lithium cell may explode resulting in a fire or chemical burn if mistreated. Do not
recharge, disassemble, or incinerate.
(4) Follow local ordinances or regulations for the disposal.
MOS
FET
Relay
1
2
Load
Max. 500 mA, 50 VDC
ON/OFF
U38
G3VM-61E
6
5
4
DATA 3
(Observe the polarity
when connecting DC power supply.)
NP Board
Fig.3.4 Connection of load to MOS FET relay
