RadioMaster ER6GV 2.4GHz ELRS PWM Receiver User Manual

1. Introduction

This manual provides detailed instructions for the proper installation, operation, and maintenance of your RadioMaster ER6GV 2.4GHz ELRS PWM Receiver. Please read this manual thoroughly before using the product to ensure safe and efficient operation. The ER6GV receiver is designed for remote control applications, particularly for glider pilots, offering high performance and reliability with the ExpressLRS system.

2. Product Overview

The RadioMaster ER6GV is a compact and slim 2.4GHz ExpressLRS (ELRS) PWM receiver. It is specifically engineered to meet the demands of glider pilots, providing up to 6 PWM channels for servo control. A key feature is its integrated high-precision air pressure sensor (Vario), which provides valuable altitude and climb/sink rate telemetry. The receiver also includes built-in receiver voltage telemetry and flight battery telemetry, automatically detecting the appropriate voltage input. It features a dual-antenna design for enhanced signal reliability and supports telemetry power up to 50mW, ensuring stable operation even with a 1S LiPo receiver battery.

Figure 1: Top view of the RadioMaster ER6GV receiver, showing PWM channels CH1-CH5, HV input, ER6GV Vario branding, ExpressLRS logo, and dual antenna connectors.

3. Features

• Integrated high-precision air pressure sensor (Vario) for altitude and climb/sink rate telemetry.
• Supports 6 PWM Channels for servo control.
• Compact and slim design, ideal for glider applications.
• Built-in receiver voltage telemetry.
• Flight battery telemetry with automatic voltage input detection.
• Dual-antenna for improved signal reception and reliability.
• Telemetry power up to 50mW.
• Stable operation with a 1S LiPo receiver battery.
• Based on the ExpressLRS system, offering high performance, reliability, flexible configuration, fast response speed, and ultra-long range.

4. Setup

4.1 What's in the Box

Figure 2: The ER6GV receiver shown in its retail packaging, alongside various connection cables including servo leads and a bind plug.

The package typically includes:

• RadioMaster ER6GV 2.4GHz ELRS PWM Receiver
• Dual antennas (pre-installed or included separately)
• Various connection cables (e.g., servo leads, power leads)

4.2 Binding Procedure

To establish communication between your ER6GV receiver and your ExpressLRS compatible transmitter, follow these steps:

1. Ensure your transmitter is powered on and running ExpressLRS firmware.
2. Power on the ER6GV receiver. The LED on the receiver will indicate its status.
3. If the receiver does not automatically bind (e.g., if it's new or has lost its bind phrase), you will need to initiate the binding process.
4. Method 1 (Bind Phrase): If your transmitter and receiver are configured with the same bind phrase, they should connect automatically. Ensure the bind phrase on your transmitter's ELRS module matches the one flashed to the receiver.
5. Method 2 (Binding Button/Sequence): Some ELRS receivers have a physical bind button. If not, you can typically enter binding mode by cycling power to the receiver three times rapidly. The LED will then flash a specific pattern (e.g., double flash) indicating it's in bind mode.
6. On your transmitter, navigate to the ExpressLRS LUA script and select the 'Bind' option.
7. Once bound, the receiver's LED will typically turn solid, indicating a successful connection.

Note: For detailed instructions on flashing firmware or setting bind phrases, refer to the official ExpressLRS documentation or your transmitter's manual.

4.3 Wiring and Connections

The ER6GV receiver provides 6 PWM channels for connecting servos and other accessories. It also has dedicated power inputs.

Figure 3: Angled view of the ER6GV receiver, clearly showing the labels for PWM channels CH1 through CH5, and the CH6+ port.

• PWM Channels (CH1-CH6): Connect your servos or other PWM-controlled devices to the corresponding channel pins. Ensure correct polarity (Signal, Positive, Negative).
• Power Input (HV): The receiver can be powered via any of the PWM channels (typically CH1 or CH6) or a dedicated HV input if available. It supports a wide voltage range, including 1S LiPo batteries. The receiver automatically detects receiver voltage and flight battery voltage for telemetry.
• Antennas: The ER6GV features dual antennas for optimal signal diversity. Ensure both antennas are securely connected and positioned at a 90-degree angle to each other for best reception. Avoid placing antennas near carbon fiber or large metal objects that can shield the signal.

Figure 4: The ER6GV receiver with its dual antennas extended, illustrating a typical antenna length of 150mm for optimal signal reception.

5. Operating Instructions

5.1 Basic Operation

Once the receiver is successfully bound to your transmitter and all connections are made, power on your aircraft/model. The receiver will establish a link with the transmitter, and you should have control over your servos via the assigned channels.

5.2 Telemetry

The ER6GV provides valuable telemetry data back to your transmitter. This includes:

• Receiver Voltage: Monitor the voltage supplied to the receiver.
• Flight Battery Voltage: The receiver can detect and transmit the main flight battery voltage.
• Vario Data: The integrated high-precision air pressure sensor provides real-time altitude and vertical speed (climb/sink rate) information, crucial for glider pilots. This data can be displayed on your transmitter screen or announced audibly, depending on your transmitter's capabilities and configuration.

Access telemetry data through your transmitter's ExpressLRS LUA script or telemetry screens. Refer to your transmitter's manual for specific instructions on setting up and displaying telemetry.

6. Maintenance

To ensure the longevity and reliable performance of your ER6GV receiver, follow these maintenance guidelines:

• Keep Clean: Regularly inspect the receiver for dirt, dust, or moisture. Clean gently with a soft, dry brush or cloth. Avoid using solvents or harsh chemicals.
• Protect from Elements: Ensure the receiver is protected from direct exposure to water, extreme temperatures, and excessive vibrations. Consider using heat shrink or a protective case if operating in harsh environments.
• Antenna Care: Periodically check antenna connections for looseness or damage. Ensure antennas are not kinked or cut.
• Firmware Updates: Keep your receiver's ExpressLRS firmware updated to the latest stable version to benefit from performance improvements and new features. Refer to the official ExpressLRS documentation for firmware update procedures.

7. Troubleshooting

If you encounter issues with your ER6GV receiver, consider the following troubleshooting steps:

• No Link/Binding Issues:
  • Verify that both transmitter and receiver are powered on.
  • Confirm that the bind phrase on your transmitter matches the receiver's firmware.
  • Ensure the receiver is in binding mode (if applicable).
  • Check the distance between the transmitter and receiver during binding; keep them relatively close.
• No Servo Response:
  • Check all servo connections for correct polarity and secure fit.
  • Ensure the receiver is receiving power.
  • Verify that the receiver is successfully linked to the transmitter (solid LED).
  • Test servos individually to rule out faulty servos.
• Poor Range/Signal Loss:
  • Inspect antennas for damage or improper placement. Ensure they are oriented at 90 degrees to each other.
  • Avoid placing antennas near carbon fiber, metal, or other signal-blocking materials.
  • Check for sources of interference (e.g., other 2.4GHz devices, noisy ESCs).
  • Ensure your transmitter's RF power is set appropriately.
• Incorrect Telemetry Data:
  • Verify telemetry settings on your transmitter.
  • For Vario data, ensure the receiver is not enclosed in a sealed compartment that prevents accurate air pressure readings.

8. Specifications

The following table outlines the key specifications for the RadioMaster ER6GV receiver:

Figure 5: Dimensions of the ER6GV receiver, indicating a length of 60mm, a width of 13.5mm, and a height of 13mm.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact RADIOMASTER directly or refer to their official website. Keep your proof of purchase for warranty claims. Firmware updates and additional resources may also be available on the official ExpressLRS project website.