Two models are available;
| SMR-102 | Board only |
| SMR-122 | Boxed |
The SMR is a Single channel, Microprocessor, Radio control Interfaces for general purpose Radio-Control applications. It provides proportional motor speed control with an active failsafe system. The units are used extensively in high-power radio-control applications utilising 4QD‘s 4QD, Pro and NCC motor speed controllers.
The mechanical layout of the SMR-102 board allows it to be plugged directly into the input connectors of the NCC series controllers.
For other controllers the boxed version, SMR-122, should be used.
Features include proportional control of a single channel with an output resolution of 64 states over the full stick displacement. Switched output mode for use in applications requiring a Radio-Control Switch. An on-board signal validation routine and a failsafe system give stable operation and "power-down" of the output in the event of transmission loss or hardware failure. The interface has an optically isolated input for maximum reliability.
The two versions of the interface are:
| Supply Voltage | 5.7-32.0V* |
| Supply Current | 4.7mA |
| Power Consumption | 24mW |
| Output Method | 2KHz PWM 0-100% Modulation |
| Output Voltage | 4.3V PWModulated |
| Input Signal | |
| Input Method | 4-100Hz PWM 1.5mS Mark Centre [RC STD] |
| Input Voltage | 3.2V - 5.5V Max |
| Input Resistance | 50Kohm |
| Failsafe Parameters | |
| Valid Input | 0.7-2.3mS Mark on PWM Input (400Hz - 1.4kHz approx) |
| Fail Time-out | 300mS |
| Fail Output | 0V (Zero) |
| Physical Attributes | |
| Operating Temperature | -40 - +90deg;C |
| Dimensions mm(")(max) | H 26.1(1.3) * W 35.6(1.4) * D 19.8(0.78) |
| Weight | 38g |
The operating instructions explaining wiring and features are available for download in PDF format.
| Description | Order Code | Price List | Add to cart |
|---|---|---|---|
| Digital Interface Single Channel Opto, NCC | SMR-102 | Add | |
| Digital Interface Single, Opto, Boxed, All | SMR-122 | Add |
We will possibly be able to issue instructions for use with our new Programmable-150 controller. Please ask.
It is possible that other controllers may be used but the interface is not designed for use with them so instructions are not provided.