Chapter 1 VisionMaster Ship’s Manual
Performance Monitor Technical Specification
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4.4 Performance Monitor
Type Approved systems require a Performance Monitor to be present in the
system.
4.5 Options
4.5.1 High Pulse Repetition Frequency
This option, available on 10kW and 25kW X-band Transceivers, increases
the short pulse repetition frequency to 3kHz. This can be combined with the
‘additional-features’ option listed below.
4.5.2 Antenna Rotation in Standby
This isolated closing-contact input is used to make the antenna rotate when
the Transceiver is in standby.
This option cannot be used with the Speed Select Input option, see
Section 4.5.3.6 ‘Speed Select Input (X-band systems only)’.
4.5.3 Additional Features
The ‘additional features’ versions of the Tuning Units and Transceivers give
the extra Input and output capabilities listed below.
The Synchro or Resolver Output is only available as an option on Scanner
Units with ‘additional features’.
4.5.3.1 Heading Marker Output
Output 1
Output 1 is an uncommitted contact output from a solid-state relay.
Output 2
Output 2 is an RS422 output, used to drive a differential line.
Both outputs share a common adjustment to correct for small errors in
Heading Marker alignment.
Table 9: Performance Monitor Specifications
Parameter Detail
Monitored Performance Radar Receiver and entire Radar System
Type Transponder
Presentation Four concentric arcs on the Display Unit. The arcs are
of reducing brightness outwards. They show
degradation in performance (including the antenna) in
5dB increments relative to the inner arc.
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