When activated the SART has three Modes of operation.
These are:
•Receive - waiting for a valid interrogation by a radar signal.
•Reply - replying to a valid interrogation by a valid radar signal.
•Test -
Figure 4
WARNING
The SART must only be used in situations of Grave
and Imminent Danger.
6.0Sequence of Operations
The SART has primary and secondary indicating systems.
The primary system is the indicator lights and the secondary system is the buzzer. When the switch is set to ON, the SART immediately enters the Test Mode. Here both the red light and the buzzer are tested. Note that in noisy environments it may be difficult to hear the buzzer. After about one second the SART goes to Receive Mode.
The SART remains in the Receive Mode until it detects a radar pulse. It then switches to the Reply Mode and transmits a series of pulses. These pulses will appear on the interrogating radar display as a series of arcs leading away from the SART‘s position. Both SART lights flash rapidly and the buzzer emits a pulsed sound (beep) at about one second interval indicating the Reply Mode. This sequence is repeated each time a radar signal interrogates or transmits a valid radar signal to the SART. When the radar signal interrogation stops the SART automatically returns to the Receive Mode.
With a fully charged battery the SART will operate in Receive Mode for a minimum of 96 hours. After this time period it will still respond to normal interrogation radar signals for an additional eight hours.
9 |
|