DUMBORC X6PM-350 RC Transmitter and Receiver Kit Instruction Manual

1. Introduction

The DUMBORC X6PM-350 is a 6-channel 2.4GHz RC Transmitter designed for controlling various RC models including cars, boats, and tanks. This kit typically includes the X6PM-350 transmitter and a compatible receiver (such as BL3F, X6FG, X6FP, or X4FMG). It utilizes 2.4G spread spectrum technology with FHSS 67-channel pseudo-random frequency hopping for robust anti-interference performance and a stable control distance of 350-400 meters. The system is designed to provide reliable control and features a low power alarm to prevent loss of control and potential damage to your model.

Figure 1.1: DUMBORC X6PM-350 Transmitter with various receiver options.

2. Key Features

• 2.4G Spread Spectrum Technology: Employs FHSS 67-channel pseudo-random frequency hopping for superior anti-interference capabilities and a full digital system to prevent signal loss.
• Mixed Control Support: Supports mixed control for channels 1 & 2 and channels 3 & 4, simplifying complex maneuvers and reducing accidental inputs.
• Independent Servo Settings: Allows independent adjustment of servo direction and travel for channels 1 through 4 and channel 6.
• Integrated Gyroscope (Optional): Receivers may include an integrated gyroscope to help models maintain a straight path, prevent drifting, and reduce the risk of overturning. Gyro sensitivity is adjustable.
• Throttle Speed Limit: A unique function to limit throttle speed, ideal for beginners to practice safely.
• Setting Mode Persistence: If accidentally entering settings mode, the system automatically exits after 5 seconds without losing memory, ensuring normal subsequent control.
• Transmitter Voltage Alarm: Operates within a 4.8-12V range with automatic voltage identification and alarms at 4.4V, 7.4V, and 10.8V.
• Receiver Voltage Support: Receivers operate within a 4.8-12V range with a 30mA current, supporting high-voltage servos.
• Voltage Return (Optional): Certain receivers offer voltage return functionality, allowing monitoring of the vehicle's battery voltage.
• Cost-Effective Design: Includes brake and fail-safe protection functions, making it suitable for a wide range of RC models.
• Power Management: Features flashing music on power-on/off, automatic power-off, and an alarm after 12 minutes of inactivity, with no current draw after 15 minutes.
• Head Tracking & Coach Interface (Optional): Receivers may include interfaces for head tracking and coach functions, requiring a separately purchased wireless trainer module.

3. Specifications

3.1. Transmitter (X6PM-350)

3.2. Receiver Specifications Overview

Figure 3.1: Comparison table of various DUMBORC receiver models.

X6FG Receiver

• Voltage range: 3.3V-10V
• Working current: 30mA
• Supports high-voltage steering gear.
• Integrated gyroscope for stability.
• Gyroscope sensitivity adjustment supported.
• Size: 35*20*13mm
• Weight: 9g

X4FMG PWM Mini Receiver

• Signal: PWM
• Voltage range: 3V-10V DC
• Model application: Car/boat
• Number of channels: 4CH
• Operating current: 30 mA@5V
• Spreading mode: FHSS (67 channel pseudo-random frequency hopping)
• Compatible remote control: X4, X6 series / X5P series / X6PM series
• Size: 25*13*8 mm
• Weight: 2.3g

X6FP PPM Receiver

• Lamp control module: Does not occupy existing channels, can switch lights on/off on any channel.
• Voltage range: 4.8V-10V DC
• Supports high-voltage steering gear.
• Operating current: 30 mA@5V
• Model application: Car/boat
• Number of channels: 6CH
• Spreading mode: FHSS (67 channel pseudo-random frequency hopping)
• Size: 35*19*13 mm
• Weight: 7g

BL3F 3-in-1 Receiver

• Item: Receiver Light Controller 10A ESC 3 in 1
• Material: Plastic and electronic components
• Channel: 6CH
• BEC: 6V 1.5A
• Model: Car/boat/tank
• Modulation Mode: GFSK
• Spread Spectrum: FHSS
• Control Distance: More than 400 meters
• Receiver Voltage Range: 4.8-10V
• ESC Voltage Range: 2-3S
• Compatible with: X4, X5, X6, X6A, X6P Transmitters for 1/12, 1/14, 1/16 RC Car
• Support: 130-180-270 series brush motor
• Product Size: 40*28*19mm
• Antenna length: 160 mm
• Weight: 11.5g

X6DC Receiver

• Material: Component Material
• Channel: 6CH
• Voltage Range: 4.8-10V
• Compatible with: X4, X5, X6 Transmitters
• Product size: 35*21*14mm
• Product weight: 9g

4. Package Contents

The DUMBORC X6PM-350 RC Transmitter and Receiver Kit typically includes the following items:

• 1 x DUMBORC X6PM-350 Transmitter
• 1 x DUMBORC Receiver (specific model varies based on purchase)
• 1 x Instruction Manual

Figure 4.1: Typical contents of the DUMBORC X6PM-350 kit.

5. Setup

5.1. Transmitter Battery Installation

1. Locate the battery compartment cover on the bottom of the transmitter handle.
2. Slide the cover open.
3. Insert 4 AA batteries (not included) into the compartment, ensuring correct polarity (+/-).
4. Close the battery compartment cover securely.

Figure 5.1: Battery compartment for 4x AA batteries.

5.2. Receiver Connection

Connect the receiver to your RC model's components (servos, ESC, etc.) according to the specific receiver model and your model's requirements. Refer to the diagrams below for general port definitions.

Figure 5.2: X4FMG/X4FM Receiver port definitions.

• CH1: Steering
• CH2: Throttle
• CH3: Channel 3
• CH4: Channel 4
• Code key: For binding process.
• Antenna: For signal reception.
• Signal (+/-): Power and signal pins.

Figure 5.3: Interface Definition for a typical 6CH receiver (e.g., BL3F) showing motor, power supply, and light control ports.

5.3. Binding the Transmitter and Receiver

The binding process establishes a secure connection between your transmitter and receiver. While specific steps may vary slightly by receiver, a general procedure is as follows:

1. Ensure both the transmitter and receiver are powered off.
2. Connect a bind plug (if required by your receiver) to the 'BIND' port on the receiver.
3. Power on the receiver. The receiver's LED should flash, indicating it's in binding mode.
4. While holding down the 'BIND' button on the transmitter (if present), power on the transmitter.
5. The transmitter and receiver LEDs should become solid, indicating a successful bind.
6. Power off both the transmitter and receiver, then remove the bind plug from the receiver.
7. Power on the transmitter first, then the receiver, to confirm the connection.

6. Operation

6.1. Transmitter Controls Overview

Figure 6.1: X6PM-350 Transmitter controls and receiver port definitions.

1. ON/OFF: Power switch for the transmitter.
2. CH1: Forward/Backward Switch
3. CH2: Forward/Backward Switch
4. CH3: Forward/Backward Switch
5. CH4: Forward/Backward Switch
6. Channel 5 (Gyro sensitivity adjustment): Adjusts the sensitivity of the receiver's gyroscope.
7. Reverse for throttle
8. Reverse for steering
9. EPA for throttle: End Point Adjustment for throttle.
10. EPA for steering: End Point Adjustment for steering.
11. CH3: Channel 3 control.
12. CH4: Channel 4 control.
13. CH1 Direction: Adjusts direction for Channel 1.
14. CH2 Throttle/Brake: Adjusts throttle and brake for Channel 2.
15. CH5: Channel 5 control.
16. CH6: Channel 6 control.
17. Battery Capacity: Indicator for transmitter battery level.

6.2. Mixed Control Mode

The X6PM-350 supports mixed control, allowing two channels to be controlled simultaneously for complex movements. This is particularly useful for multi-motor vehicles like tanks.

CH3 & CH4 Mixed Control

In mixed control mode, CH3 and CH4 act as jog signals. Pressing the button activates the channel's signal output, and releasing it returns the channel to a neutral signal. By mixing CH3 and CH4 signals and outputting them from the CH3 port of the receiver, forward, stop, and reverse operations can be achieved. This is useful for controlling servos, winches, tank barrels, turrets, and other components. The default factory setting for travel range is 50%, which is sufficient for most motor control elements.

Figure 6.2: CH3 & CH4 Mixed Control operation.

General Mixed Control Mode

Connect two ESC signal lines to Channel 1 and Channel 2 of the receiver. The trigger controls forward and backward rotation of the two motors. The positive and negative rotation of the motor can be set using switches on the control panel. In this mode, the speed of the two motors can be adjusted by the channel 1 directional wheel to achieve left and right differential steering. Channel 1 and Channel 2 can have their forward/reverse direction, neutral point, and motor range set separately.

Figure 6.3: Mixed Control Mode wiring for dual ESCs.

6.3. Gyroscope Function (for compatible receivers)

For receivers with an integrated gyroscope:

• Switching Modes: Fast press the binding button 3 times to switch between gyroscope mode and normal mode.
• Adjusting Gyro Direction: Fast press the binding button 2 times to adjust the gyroscope direction.
• Adjusting Gyro Sensitivity: Adjust the gyroscope sensitivity using Channel 5 on the transmitter.
• Indicators: The green indicator is always on in normal mode, and the yellow indicator is always on in gyroscope mode.

Figure 6.4: Gyroscope function and visual comparison (without vs. with gyroscope).

6.4. Throttle Speed Limit

The throttle speed limit function is designed to help beginners manage their RC model's speed. Use the dedicated dial on the transmitter (labeled 'TH' with percentage markings) to set a maximum throttle output. This allows for safer practice and gradual progression.

6.5. Voltage Return (for compatible receivers)

If your receiver supports voltage return, the transmitter will display the vehicle's battery voltage. The voltage return lights on the transmitter (3 green, 1 red) indicate power levels: 100%, 75%, 50%, and 25%. An alarm will sound when the power reaches 25% to remind you to return the model safely. The effective return distance for voltage display is approximately 190 meters.

6.6. Light Control (for compatible receivers like X6FP, BL3F)

Receivers like the X6FP and BL3F include light control capabilities. The X6FP's lamp control module allows switching lights on and off via any channel without occupying an existing one. The BL3F receiver has dedicated ports for various lights (CL: Cornering Lamp, SL: Stop Lamp, FL: Flash Light, BL: Back-up Lamp, DRL: Daytime Running Light).

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the transmitter and receiver. Avoid using solvents or harsh chemicals.
• Storage: Store the unit in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries from the transmitter if storing for extended periods to prevent leakage.
• Battery Care: Always use fresh, good quality AA batteries for the transmitter. Replace them when the low voltage alarm sounds.
• Receiver Protection: Ensure the receiver is protected from moisture, dust, and physical impact within your RC model.
• Antenna Care: Do not bend or cut the receiver antenna. Ensure it is positioned correctly for optimal signal reception.

8. Troubleshooting

• No Power: Check if the AA batteries in the transmitter are correctly installed and have sufficient charge. Ensure the ON/OFF switch is in the 'ON' position.
• No Control/Signal Loss:
  • Ensure the transmitter and receiver are properly bound. Re-bind if necessary.
  • Check the distance between the transmitter and receiver; ensure it's within the specified control range (350-400 meters).
  • Verify that the receiver is powered correctly and its antenna is undamaged and properly positioned.
  • Check for potential interference from other 2.4GHz devices.
• Low Power Alarm: The transmitter will alarm at 10.8V, 7.4V, or 4.4V depending on the battery type. Replace or recharge the transmitter batteries immediately.
• Model Drifting/Unstable (with Gyro):
  • Ensure the gyroscope is enabled and correctly calibrated.
  • Adjust the gyroscope sensitivity using Channel 5 on the transmitter.
  • Check the gyro direction setting.
• Accidental Settings Mode Entry: If you inadvertently enter the settings mode, the system will automatically exit after 5 seconds, and your previous settings will be retained.
• No Current After 15 Minutes: This is a power-saving feature. The transmitter automatically powers off and draws no current after 15 minutes of inactivity. Simply power it back on.

9. User Tips

• For beginners, utilize the throttle speed limit function to gradually get accustomed to controlling your RC model.
• When using mixed control for channels 3 and 4, remember that the default factory setting for travel range is 50%, which is suitable for most winch or turret controls.
• If your receiver has a gyroscope, experiment with the sensitivity adjustment on Channel 5 to find the optimal stability for your specific model and driving conditions.
• Always power on the transmitter before the receiver and power off the receiver before the transmitter to maintain proper communication protocols.

10. Warranty and Support

DUMBORC products are manufactured to high-quality standards. For any technical support or warranty inquiries, please contact your retailer or the official DUMBORC support channels. Keep your proof of purchase for warranty claims.