Figure 4-10.—The front panel for a sweep/passive sensor
data distribution switchboard (SDDS).
Sweep/Passive and Sweep/IFF Functions
The sweep/passive function of the SDDS
receives radar and video select signals from the
display consoles via the video drawer, and receives
sweep data from the SCG. The sweep/IFF function
receives the same inputs as the sweep/passive drawer and
also receives identification, friend or foe/selective
Figure 4-11—The front panel of the sweep/IFF SDDS.
identification feature (IFF/SIF) video and control
signals. The operation of both the sweep/passive
function and the sweep/IFF function is similar. The
sweep/passive function decodes the radar and video
select signals from the display consoles or the CEG
front panels and routes the proper radar sweep and
IFF/SIF video back to the console.
The
sweep/passive function also sends the radar and
video select signals to the video function SDDS as
the data select signal.
Video Function
The video function receives composite video
from the selected sensor, and routes it to the
requesting display console.
The video function
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