Argus Radar - RADAR CONFIGURATION
988-10187-004 3.4
Examples:
1:360 means that each stepper or synchro cycle corresponds to 1 degree and 1 complete
360° turn correspond to 360 cycles. For this setup the gyro resolution will be 1/6°
1:36 means that each stepper or synchro cycle corresponds to 10 degree, and 1 complete
360° turn correspond to 36 cycles.
Normally, for most Gyro types, the Gyro Ratio is 1:360.
Other settings are available with analogue gyro, one is the “Reference generated
Internally” checkbox that is the usual setup for stepper gyro.
When the reference signal to sample phases is external, the checkbox should not be
activated.
Another checkbox “Negative Phases” is available in stepper mode, and it should be
checked, when the voltage on phase is going from zero to negative.
The S1, S2, S3 symbols can be highlighted and reflect exactly the same gyro phases
states described in the analogue gyro section.
The user manual explains the analogue gyro interface operation.
Note that this kind of interface does not permit equal phase levels, or lack of reference
signal (synchro mode). Failure warnings due to incorrect settings can only be cleared by
correcting the gyro settings.
The gyro preset is necessary also because this kind of interface is not absolute, but
receives incremental pulses and therefore needs a preset value taken when the ship’s
heading is stable.
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