FLEX-6000 Signature Series - SmartSDR for Windows Software User’s Guide
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30.2.2 BIT Cables
BIT cables provide a means to map the tuned frequency of the radio to a set of individual
signals/wires at the end of the cable. These cables are designed to control external devices when
the radio is tuned to specific bands or frequency ranges, and for external keying or sequencing that
is triggered when the transmitter becomes active.
The signal that appears on each bit/pin of a BIT cable is configured by use of the controls in the USB
Cables menu:
• Pin – Enables/disables each pin/bit individually
• Polarity - Controls whether the pin/bit is high or low when triggered
• Source - Determines which source is used as the frequency check for this bit/pin. The
sources are the same as for the CAT cables, listed above.
• Trigger - Determines the band/frequency range that the source must be within for this
bit/pin to be active.
• PTT - When set, the pin/bit will become active only when the radio is in transmit and the
source frequency is within the output band/frequency range. Individual pin/bit PTT and TX
Delays can be set and will be used by the radio when keyed.