MUNIC C4D-4G4USAA V8+

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Summary

Warnings and Notices

Battery Warning

Safety instructions for battery handling, replacement, and disposal.

FCC Regulations and Compliance

FCC RF Exposure Information (SAR)

Details on radio frequency exposure limits and compliance for the device.

Hardware Description

External Device View

Visual identification of external components and connectors on the device.

Internal Device View

Visual identification of internal components and their arrangement.

OBD Connector Pin Assignments

Detailed pinout configuration for the OBD connector.

OBD Adapter Wire Colors

Mapping of wire colors to OBD adapter pins.

Device Preparation and Installation

Opening the Device

Step-by-step guide for safely opening the device casing.

Closing the Device

Instructions for properly reassembling the device after access.

Connecting the OBD Dongle

Procedure for installing the dongle into the vehicle's OBD port.

The C4D-4G4USAA_V8+ is an OBD dongle designed for collecting and transmitting vehicle data. It integrates various communication and positioning technologies, making it suitable for a range of telematics applications. The device is compact and designed for easy installation into a vehicle's OBD connector.

Function Description

The primary function of the C4D-4G4USAA_V8+ is to act as a vehicle data acquisition and transmission unit. It connects directly to the vehicle's On-Board Diagnostics (OBD) port, allowing it to read various vehicle parameters. The collected data can then be transmitted wirelessly using its integrated modem (4G Cat.4) and Wi-Fi capabilities. The device also includes GNSS (GPS, GLONASS) for location tracking and an accelerometer for motion detection. Its internal battery provides backup power, ensuring continuous operation even when the vehicle's ignition is off. The device features LED indicators to provide visual feedback on its operational status, including modem activity, GNSS fix, and power status.

Important Technical Specifications

Performance:

Processor: ARM Cortex-A7 Dual-Core 1.2GHz
RAM: 256 Mbytes
NAND Flash: 512 Mbytes

Power Supply:

External Power Supply Range: 8-18V
External Voltage Measurement: Yes
Internal Battery: Li-pol battery 270mAh

Communication:

Modem: 4G Cat.4 module EC25-T
Bands: B2, B4, B5, B12, B66, B71
Modem Antenna: Internal
SIM: MFF2 soldered SIM (SIM holder can be absent if eSIM is used)
WiFi: 802.11 a/b/g/n/ac 2.4GHz, 5 GHz
Bluetooth: BT 2.0

Positioning:

GNSS Receiver: U-blox M8 (GPS, GLONASS)
GNSS Antenna: Internal

Interface & Telematics Features:

Accelerometer: 3 axis ±2/4/8/16 G
OBD Protocols: CAN, ISO9141, J1850 (VPW, PMW)
Buttons: 1 reset button
LEDs: 2 bicolor LED (Green and Red, appearing orange when both are bright)
Connectors: OBD connector, Micro USB type B connector

Environmental:

Operating Temperature: -20°C/+50°C with Battery; -20°C/+60°C without battery

Dimensions:

27.3 x 51 x 71 mm

Usage Features

The C4D-4G4USAA_V8+ is designed for straightforward use. Its primary usage involves connecting it to a vehicle's OBD connector. The device then automatically begins collecting data and communicating as configured.

LED Sequences: The device provides visual feedback through its two bicolor LEDs (Signal LED and Power LED).

Dongle OFF: Both LEDs are OFF.
No Modem / No GNSS: Signal LED flashes green 3 times (50ms ON/100ms OFF) followed by 3550ms OFF. Power LED is Green ON when external power is connected.
No Modem / Fix GNSS: Signal LED flashes green 2 times (50ms ON/100ms OFF) followed by 3700ms OFF. Power LED is Green ON.
Modem OK / No GNSS: Signal LED flashes green once (50ms ON/100ms OFF) followed by 3950ms OFF. Power LED is Green ON.
Modem OK / Fix GNSS: Signal LED is Green ON for 2000ms, then OFF for 2000ms. Power LED is Green ON.
Shutdown/Hibernate: Signal LED flashes green (30ms ON / 1s OFF). Power LED is Green ON.
Idle/Sleep: Signal LED flashes green (30ms ON / 1s OFF). Power LED is Green ON.

OBD Adapter Wires: An optional OBD adapter cable is available for connecting the device to a computer (laptop/desktop) for configuration or diagnostics. The pin-out for this adapter is provided, detailing the wire colors for each OBD pin (e.g., Yellow for Pin 2, Black for Pin 4, Green for Pin 6, Red for Pin 16 for Battery voltage).

Maintenance Features

The device is designed for internal access for maintenance or SIM card insertion (if not using eSIM).

Opening the Device:

Insert a small slotted screwdriver between the top cover and the body to pop out the top cover on each side.
Remove the screw located on each side of the OBD connector using a T4 Torx screwdriver.
Remove the screw located on the PCB at the bottom of the device using a T6 Torx screwdriver.
Move apart the side of the device and pull the OBD connector out of the body. Once opened, the internal components, including the micro USB connector, modem antenna, GNSS antenna, nano SIM holder (if present), and internal battery, are accessible.

Closing the Device:

Insert the main part into the bottom cover, ensuring the rear is inserted first and taking care of the pogo pin of the GNSS antenna.
Push the main part into the back cover until two "clac" sounds are heard, indicating it's properly seated.
Place the long screw on the rear of the electronic cards and fix it to the body using a T6 Torx screwdriver.
Place the screw on each side of the OBD connector to fix it to the body using a T4 Torx screwdriver.
Insert the top cover, starting with the rear.
Push the top cover down until a "clac" sound is heard, indicating it's securely closed.

Battery Warning: The manual emphasizes critical battery safety warnings, including not disassembling, crushing, deforming, puncturing, or shredding the battery. It also warns against exposing the battery to water, fire, or explosion hazards. Only qualified charging systems and replacement batteries (IEEE 1725 standard) should be used to avoid risks. Battery replacement should only be performed by authorized service providers if it's not user-replaceable. Used batteries must be disposed of according to local regulations. Dropping the device or battery, especially on a hard surface, requires inspection by a service center.

FCC Regulations: The device complies with FCC Part 15 rules, ensuring it does not cause harmful interference and accepts received interference. Users are advised on measures to correct interference if it occurs (reorienting antenna, increasing separation, connecting to different circuit). Changes or modifications not expressly approved by the responsible party could void the user's authority to operate the equipment.

FCC RF Exposure Information (SAR): The device is designed to meet FCC emission limits for radio frequency (RF) energy. The highest reported SAR value for usage near the body is 1.34 W/kg, and for extremity usage, it is 3.30 W/kg. SAR compliance for body operation is based on a separation distance of 15 mm between the unit and the human body. The FCC has granted equipment authorization for this model, with SAR information available on www.fcc.gov/oet/ea/fccid under FCC ID: A6GC4D-4G4USV8.