Smiths Kelvin Hughes Nucleus 3 5000 Series, Системный справочник

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FUNC TION - ZONE 1
TRANS MIT TER IN FOR MA TION
TX BOX - TRANS MIT TER SE LEC TION
73
Shows the transmitter under control. With the cursor
highlighting the TX box, the middle pushbutton puts
the radar into STANDBY. Left and right pushbuttons change
the displayed transmitter (optional).
PULSE LENGTH (MP/SP/LP) BOX- SELECTION
74
Shows the pulse length in use. With the cursor
highlighting the box, a pop-down selection box
appears as shown below. The middle pushbutton sets the
pulse length to automatic (normal) setting. Left and right
pushbuttons select a shorter (SP) or longer (LP) pulse
length respectively, where allowed.
PM BOX – PER FOR MANCE MON I TOR
(OP TIONAL)
75 Press and hold any pushbutton with the cursor
highlighting the PM box to invoke the performance
monitor.
76 To enable to monitor permanently:
(1) Highlight the PM Box.
(2) Press and hold down any pushbutton.
(3) Using the trackerball, move the cursor to highlight
the TUNE box, and press either of the other two
buttons.
(4) Release both pushbuttons.
77 While the performance monitor is enabled the PM box
will outlined in red.
78
To de-activate the performance monitor once
permanently enabled, with the cursor highlighting the
PM box, press any pushbutton.
Using The Per for mance Mon i tor To Check Ra dar
Per for mance
79 The radar plume and sun responses (see diagrams
below) can be used to measure radar performance as
follows:
Trans mit ter Per for mance:
80
Select the 12nm range scale and measure the extreme
range of the plume using the cursor readout.
81 Compare the range measurement with the reference
figure taken on installation: A fall of more than 20%
indicates a need for transmitter maintenance.
Re ceiver Per for mance:
82
Select the 1.5nm range scale (X-Band receivers only,
for S-Band select the12nm range scale) and measure
the range of the sun using the cursor readout.
83
Compare the range measurement with the reference
figure taken on installation: A fall of more than 20% on
an X-Band, or 80% on an S-Band (due to the S-Band monitor
being more sensitive to changes) indicates a need for
maintenance.
NOTE
Refer to the Installation Record, for details of the reference
figures.
X-Band
Typical Figures:
Tx=6 to 8nm (25kW)
Tx=1.5 to 2.5nm (10kW)
Rx=0.75 to 1nm
S-Band Typical sun and plume responses
Tx Rx
PM PM
Typical Figures: Tx=6 to 8nm
Rx=Sectors typically 8nm
July 03 1.10 Amdt. 5
KH 2020
Chap 1
CD-4737
Rx ‘SUN' (S-BAND)
Tx PLUME
Rx ‘SUN' (X-BAND)
CD-1965
Typical sun and plume responses