DSP4-SC 4Ch Receiver with built-in ESC
|Conventional Receivers: Dumb and Dumber
Conventional receivers use analog pulse shaping networks and shift registers to decode the incoming transmitter pulses. This old technique has two major problems: it is complex to build, and it cannot tell the difference between noise or interference, and the desired R/C signal. The result: servo jitter, excessive servo wear, and in severe cases, crashes.
Digital Signal Processing: Smarter is Better
A microcomputer is the ideal way to implement intelligent processing. The DSP4 microcomputers have a whole array of built-in algorithms to selectively weed out noise and interference, and allow only clear, clean signals to reach your servos and motor.
Valid Signal Detector
VSD will throw away invalid R/C pulses. In addition, it will ignore short gaps in the signal that are common when flying in very noisy electrical environments, or when you are near the limits of radio range. The result is very smooth operation, even under adverse conditions.
Ramp-Up, Ramp-Down Filtering
The built-in speed control has our exclusive Time Domain Filtering algorithm. This ensures motor speed will always increase or decrease smoothly, greatly reducing motor and gearbox stresses.
Safety Arming: No signal = No Glitch
Go ahead, turn on your receiver first! The Safety Arming algorithm will not allow your servos or motor to move until it determines that a proper, stable, R/C signal is present. No more out-of-control thrashing, and no more broken servos!
Loss of Signal Shutdown
The Loss Of Signal feature will shut down your motor when NO valid R/C signal is received for 1 second. When a valid throttle signal is again detected, your motor will return to the proper speed automatically.
|Range and Selectivity: More is Better, But . . .
With conventional receivers, amplifying the signal more also amplifies noise and adjacent channel interference. DSP4 solves these problems by using higher quality crystal filters in the "front end" to reject more of the unwanted signals. The remaining noise can then be effectively removed with the highly sophisticated Digital Signal Processing computer.
Place a brand "____" receiver on a table and power it up with a servo attached. (Oh, did you remember to turn on your transmitter first?!) Turn on another transmitter on an adjacent channel. You will probably get "hit". Now, do the same thing with a DSP4. No glitching. Move the correct transmitter across the room. Still no glitching. Turn the correct transmitter OFF. Still no glitching! (Yes, we've done this many times.)
More Features: the 1.5 Amp BEC
Your DSP4 BEC is capable of 1.5 Amps continuous current. This should be plenty to run the receiver and any combination of small servos you have. The BEC chip is soldered to an area of solid copper to aid in heat dispersion. HOWEVER, as servo load and battery voltage increase, so does heat generated by the BEC. When using a battery of 12V. or more, test the setup by exercising your servos continuously with your transmitter. If the BEC becomes too hot to touch, you are nearing the limits of heat dissipation, and you should either reduce the battery voltage, or use smaller servos. By the way, the BEC chip itself is protected against excessive temperature, and will gradually shut down if overheated.
Up to 10 Amp Capacity
Although the built-in ESC is designed for use with small electric motors, it is actually capable of delivering over 12 Amps of current. Since motors can draw surge currents many times larger than the average current, we recommend using a 10 Amp fuse between the DSP4-SC and motor when using any motor and battery combination capable of drawing more than 12 Amps when the motor is stalled.