Telemetry teaching aid
Wood and Douglas, manufacturer of telemetry RF equipment, has launched a radio experimentation board for use as a teaching aid for students in schools and universities, as well as system designers and engineers unfamiliar with the technology.
The Cirrus was developed in collaboration with universities to meet the need for a practical means of experimenting with radio and demonstrating its potential. Although simple in concept, it provides a robust and flexible platform for radio experimentation. Based on a standard Wood and Douglas radio module it can be connected to a PC or PIC for remote control, enabling the development of a telemetry system with minimal hardware prototyping. Cirrus uses the popular SX500 commercial range transceiver and a V23 modem as the radio link. These are mounted on the board with a matching antenna which provides 16 selectable radio channels. The main board has eight digital input and output ports and one analogue circuit. The digital ports have on-board switches for input selection and LED indicators for output status, open with relay contacts. The analogue port is driven by a potentiometer with an input range of 0–5V, and the input level is displayed on a bar graph indicator. Transmission of a change of input level can be set to continuous, manual or automatic.
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