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Glossary

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IRD Controlled Switch

The required polarization can be selected using the bias voltage generated in the IRD 13 Volts = Vertical and 18 Volts = Horizontal. To select the required band the 22 KHz tone can control the switching. Low = Tone off or High = Tone On. The DEV IRD controlled switch uses the Volts and tone signals to route the required signal to each IRD automatically. IRD's can be installed in groups of 16, 32, 48 or 64.