Do you have a question about the Topmodel XPower R4-B and is the answer not in the manual?
The XPower R4-B receiver is a compact and versatile 2.4GHz FASST receiver designed for air systems, supporting 7-channel and multi-mode operation. It is specifically engineered to provide reliable control for various RC aircraft applications.
The primary function of the XPower R4-B is to receive control signals from a compatible 2.4GHz FASST transmitter and translate them into commands for up to four channels. This allows for the control of essential aircraft functions such as ailerons, elevator, rudder, and throttle. A key feature of this receiver is its support for two distinct Fail Safe setting options: either utilizing the native Fail Safe position preset on the transmitter side or programming the Fail Safe directly on the R4-B receiver itself. This dual approach offers flexibility and enhanced safety in case of signal loss.
Beyond standard PWM output for individual channels, the R4-B receiver also boasts advanced capabilities for CPPM (Combined PPM signal) and RSSI (Receiver Signal Strength Indicator) output. By connecting CH3 and CH4 with a jumper, CH1 will output CPPM for channels 1 through 8, while CH2 will output RSSI as a PWM signal. This makes the R4-B suitable for more complex setups, including flight controllers that benefit from single-wire CPPM input and telemetry systems that utilize RSSI for signal quality monitoring.
These specifications highlight the receiver's suitability for a wide range of RC aircraft, offering a good balance of size, weight, and performance. The broad operating voltage range allows for compatibility with various battery configurations, while the wide temperature range ensures reliable operation in diverse environmental conditions.
The XPower R4-B is designed for straightforward use, with clear procedures for binding and Fail Safe setup.
Binding Procedure:
Fail Safe Settings: The R4-B offers two Fail Safe options:
LED Status Indicators: The receiver features a red and a green LED to indicate its operational status:
RX Battery Pack Connection: The receiver battery pack can be plugged into any free input on the receiver. If all four channels are in use, a Y-cord can be used to connect the battery pack, freeing up a channel for other uses.
CPPM and RSSI Output: To enable CPPM and RSSI output, a jumper must be connected between CH3 and CH4. Once jumpered, CH1 will output CPPM for channels 1-8, and CH2 will output RSSI (PWM). This feature is particularly useful for integrating the receiver with flight controllers that accept CPPM input and for monitoring signal strength.
The manual emphasizes proper handling and storage to ensure the longevity and reliable operation of the receiver. While specific maintenance procedures are not detailed, the general advice includes:
The XPower R4-B receiver is designed to be a "set and forget" component once properly installed and configured, with its robust design and clear status indicators minimizing the need for ongoing user maintenance beyond ensuring proper power supply and signal integrity.
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