TABLE OF CONTENTS
FEATURES .................................................................................... 2
GENERAL INFORMATION ........................................................... 3
Voltage Spike Protection
RF Noise Filtering
Back-Up Power
Warning of Imminent Loss of Power
Timed Disconnect Circuit
Low Battery Disconnect Circuit
MATERIALS PROVIDED .............................................................. 4
INSTALLATION ............................................................................. 4
Main Unit
Remote Panel
OPERATION .................................................................................. 5
BATTERY CHARGING/REPLACEMENT .................................. 6
TEST/TROUBLESHOOTING ....................................................... 7
THEORY OF OPERATION ........................................................... 8
SPECIFICATIONS .......................................................................... 8
FEATURES
•
Back-Up Battery maintains DC output voltage during dips and black-outs —
prevents memory loss and system crashing in GPS, MDTs, and other critical
electronics.
•
Multi-Stage Filter eliminates electronic noise and interferences, providing
pure power navigation electronics require.
•
Power Status Panel alerts operator to possible loss of power.
•
Overvoltage transient protection prevents damage to sensitive circuitry due
to voltage line spikes.
•
Low voltage and timed disconnect circuits protect internal battery against
shortened life or damage due to excessive discharge.
•
Maintenance-free solid state circuitry assures years of dependable service.
•
Conformal coated printed circuit board resists corrosion.
•
Rugged, rust and corrosion-proof vinyl laminated aluminum case provides
protection for components.
•
All components selected for dependable performance in the most hostile
environments.
•
Each unit thoroughly tested and inspected before shipment.
•
Two year limited warranty.
GENERAL INFORMATION
The NAV-PAC protects electronics from voltage spikes, power surges, momentary
power losses, abrupt voltage changes and noise interference on incoming DC power
to MDTs, GPS, CHART PLOTTERS and other Onbaord Electronics prone to
memory loss or “crashes”.
NAV-PAC is a solid state device which provides “pure” power to navigation
electronics by performing several essential functions.
1)
Voltage Spike Protection:
Engine cranking, pump and motor operation send
voltage “spikes” through a boat’s electrical system that often “bulldoze” their
way through the electronic circuitry. NAV-PAC eliminates this ruinous condi-
tion.
2)
R.F. Noise Filtering:
The NEWMAR NAV-PAC contains a four-element low-
pass LC filter which provides very high radio frequency attenuation in both
positive and negative power leads to the receiver preventing noise from
adversely affecting signal reception and related operation.
3)
Back-Up Power:
A special long-life, completely sealed “Dry Battery” pack is
built-in the NAV-PAC which acts a power reservoir and is charged from the
shipboard 12 Volt power. In the event of a drop in DC voltage due to engine
cranking or total power interruption, the battery will maintain power to navigation
equipment for a short period of time. This is essential for preventing memory and
data loss.
4)
Warning of Imminent Loss of Power:
A remote panel is supplied with the
NAV-PAC and its function is very important; it warns of loss of input power and
indicates output is available to your navigation equipment. A flashing “Out put OK”
indicator light warns the operator that the NAV-PAC has lost DC input and that the
navigation equipment is being powered by the NAV-PAC’s internal battery only.
This allows the user time to restore DC input to the NAV-PAC and navigation
equipment or to turn off the navigation equipment before the input voltage
drops, causing memory loss.
5)
Timed Disconnect Circuit:
This circuit prevents damage to the internal battery
from extreme discharge by disconnecting the NAV-PAC battery approximately
15 minutes after abrupt drop or complete loss of DC input.
6)
Low Battery Disconnect Circuit:
This circuit prevents damage to the internal
battery from extreme discharge by disconnecting the battery whenever battery
voltage reaches 10.2 VDC.
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