Consilium SRT, Техническое руководство

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SRT X-BAND RADAR SYSTEMS
FUNCTIONAL DESCRIPTION
304202P003 3.14 Rev. C
3.2.5
Optional Equipment: SRT Adapter Box
It is possible to connect TRTX units to the Radar Display with lengths of 300 m
between.
To ensure adequate signal levels at this distances the SRT Adapter Box has
been introduced.
The SRT Adapter Box has the following functions:
•
Ensure adequate Power supply level (of 50 V) for the TRTX even at long
cable lengths. A 480W AC/DC power supply with universal input from
85VDC to 250 VDC is located on the right part of the box.
•
Safety switch location to interrupt the antenna rotation during mainte-
nance.
•
The Adapter PCB within the adapter box ensures correct signal buffering
and adjustment of signal levels (amplification) compensating for cable
losses.
•
Decode the combined video and if needed convert older types of protocol
(as Mastermate) to new combined video protocol standards.
The decoding logic extracts the serial data packets, the trigger and bear-
ing signals from the combined video and translated them in standard lev-
els (for example 232/422 for serial lines)
Figure 9.1.36 shows the SRT Adapter Box PCB layout.
LED D9 is a dual red / green LED. When red the board receives from the dis-
play unit. When green transmitting to the display unit.
LED D10 is also a dual red/ green LED . When green, there is a proper signal
decoding is going on. When red, there is a parity error at decoding.
This latter LED works when the decoding function is enabled.
3.2.6
Optional Equipment: Heaters
Heaters are introduced for extreme cold environments, when the SRT Radar
System is expected to operate down to –40° C. The heater system consists of
cylindrical heater resistors mounted inside two cavities on the top part of the
transceiver. The heaters warm the inside electronics and the gearbox.
A controller PCB stops the heating when temperature is going over 0° C and
switches all the available power that is not used by the antenna rotation to the
heaters.
3.2.7
Optional Equipment: Encoder
The function of the Encoder is to increase the angular resolution of the azimuth
and heading signal to 1024 pulses for revolution.