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Digital Display Indicator (DDI) | Up
Fire Controlman Volume 05-Display Systems and Devices | Next
TEST MESSAGE GENERATOR (TMG) |
DISPLAY SYSTEM SIMULATION
AND TESTING
Figure 3-24.—VSS front panel.
Most tactical display systems are able to simulate
radar video and sweep signals for testing,
troubleshooting, and operator training on the PPI
consoles. In addition, there are computer programs
(POFA/PEFTs) specifically designed to exercise the
display consoles and verify their proper operation.
This section covers the devices and software used
in tactical display systems to simulate the ship’s radars
and to test and troubleshoot the tactical display
system.
VIDEO SIGNALS SIMULATOR (VSS)
The VSS develops simulated radar video and
sweep signals for use in tactical display system
testing, troubleshooting, and operator training. The
VSS is used in place of or in conjunction with an
operating two-dimensional radar. Simulated video
and sweep signals of variable characteristics are used
in the testing of RACs, RDDS, PPI consoles, and the
operations summary console (OSC).
Use of the VSS makes it possible to monitor
operator tracking accuracy. When used in conjunction
with the operational program, the VSS can develop
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