LDARC CR1800 Receiver User Manual

Features

• LDARC O2 bidirectional 2.4Ghz wireless system
• Wireless signal strength indication
• Telemetry (return) battery voltage
• 8 channels PWM output
• 50Hz/100Hz/200Hz servo speed

Warning

This product is not a toy. Users need model hands-on experience. Incorrect use may cause personal injury and equipment damage. Read this manual carefully before use. LDARC does not assume responsibility for any property damage or personal injury caused by the use of this product.

Remove ESC and motor before binding procedure, otherwise, it may cause serious injury.

Use reasonable failsafe settings. Under the premise of ensuring safety, remove the motor gear, then power off the transmitter to test if the failsafe is working properly.

Binding (对码)

Power on the receiver, then press and hold the button within 10 seconds until the LED flashes green and blue rapidly, indicating the receiver has entered bind mode.

On the transmitter, navigate to the , menu and select or to correspond to the receiver's or mode.

After successful binding, the receiver's LED will slowly flash red and blue () or red and green (). Exit the transmitter's bind menu and cycle the receiver's power for normal operation.

• mode: Bidirectional communication. The receiver sends telemetry (return) voltage to the transmitter, allowing users to set alarm voltages. Multiple receivers can bind to one transmitter model file, but only one receiver should be powered on at a time to avoid telemetry data confusion.
• mode: One-way communication. The transmitter cannot display telemetry (return) voltage or signal strength.

LED Indicators (指示灯)

Pin Definitions (引脚定义)

Telemetry Voltage Input (遥测电压输入): 0V - 18V

Power Input (BAT+/BAT-): 5.0V - 8.4V

Connections: Pay close attention to power polarity when connecting telemetry voltage input, ESC, servos, BEC, etc. Incorrect connections may damage the receiver or cause fire.

Receiver Diagram:

[Diagram showing CR1800 receiver with labeled pins: BAT+, BAT-, CH1-CH8, BIND]

Attention (注意事项)

Pay great attention when connecting telemetry voltage, ESC, servo, or BEC to ensure correct polarity. Otherwise, the receiver may break down or catch fire.

The CT series transmitter uses the LDARC O2 wireless system. Each model file on the transmitter has a unique ID. This ensures the receiver binds to the specific model file. Receivers not bound to the current model file will go into failsafe mode, even with the same transmitter.

Set failsafe on the transmitter via , , .

Only channels CH1-CH4 support 50Hz/100Hz/200Hz servo speed settings. Other channels maintain 50Hz PWM output. Consult your servo's manual for supported servo speed settings; exceeding the maximum may damage the servo. Set servo speed via the transmitter's , , menu.

After setting failsafe and servo speed, the receiver may take up to 20 seconds to apply the settings.

Upon initial power-up, all receiver channels output 50Hz servo speed. Once a transmitter signal is received, the receiver will operate according to the user-set servo speed and failsafe parameters, which may take up to 20 seconds.

Specifications (参数)

LDARC O2 Wireless System Supported Products:

• LDARC CT series transmitters
• LDARC CR series receivers
• LDARC X43 micro off-roader
• LDARC M58 micro monster truck

Website: WWW.LDARC.COM

FCC Warning

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

RF warning for Mobile device: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.