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Tail
•
Defines delay between falling edge of PTT source (end of T-R source cycle) and end of sequencer
output in milliseconds.
Switching delay
•
Defines additional time which is added to the largest lead time. During this time control box generates
INHIBIT signal for SMD. It generally stands for T-R switching delay of sequenced RF box.
To make it absolutely clear please check the picture. Output 1, BYPASS has 10ms lead time. Output 2
POWER has 20ms lead time. Switching delay is set for 26ms. The largest lead time is 20ms on POWER
output. It means that, BYPASS output will be active after 10ms from PTT arrival, POWER output will be
active after 20ms from PTT arrival and control box will generate INHIBIT signal for 20ms + 26ms = 46ms
from PTT arrival. During this time transmission from the radio will be disabled by SMD.
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