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Revision 1.0 Page 1
®®
1 Introduction
Congratulations on your purchase of the Maretron DC Monitor (DCM100). Maretron has
designed and built your DC monitor to the highest standards for years of dependable and
accurate service.
Maretron’s DCM100 is a device which monitors DC power sources or batteries and outputs
information about these sources onto the industry standard NMEA 2000
®
marine data network
so that these data can be monitored with networked NMEA 2000
®
displays such as the
Maretron DSM250 or with NMEA 2000
®
compatible software such as Maretron N2KView.
The Maretron DCM100 is designed to operate within the harsh demands of the marine
environment. However, no piece of marine electronic equipment can function properly unless
installed, configured, and maintained in the correct manner. Please read carefully and follow
these instructions for installation, configuration, and usage of the Maretron DCM100 in order to
ensure optimal performance.
1.1 Firmware Revision
This manual corresponds to DCM100 firmware revision 1.0.2.
1.2 DCM100 Features
The Maretron DCM100 has the following features.
• NMEA 2000
®
Interface
• Waterproof Connectors
• Sealed Waterproof Enclosure
• Opto-Isolated from NMEA 2000
®
Eliminating Potential Ground Loops
• Can monitor DC Power Sources, Transmitting Voltage and Current
• Can monitor Lead Acid and Gel Batteries, Transmitting Voltage, Current, Temperature,
and State of Charge
• Uses Peukert’s Constant and Charge Efficiency Factor for Accurate State of Charge
Calculation
• Can Calculate Charge Efficiency Factor Based on Observed Battery Performance
1.3 Quick Install
Installing the Maretron DCM100 DC monitor involves the following five steps. Please refer to
the individual sections for additional details.
1. Unpack the box (Section 2.1)
2. Choose a mounting location (Section 2.2)
3. Mount the DCM100 (Section 2.3)
4. Connect the DCM100 (Section 2.4)
5. Configure the DCM100 (Section 2.5)
6. Synchronize the DCM100 with the battery (Section 2.6)