Smiths Kelvin Hughes Nucleus 3 5000 Series, Системный справочник

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SPEC I FI CA TION
38 Technical specifications for MkVI Transceivers are
provided in Table 1, below.
NOTE
(1) The PRF oscillator can be preset with a basic frequency
range of 2400 - 3400 Hz (nominal 3000 Hz).
(2) Short pulse can be set to 3000 or 1500 Hz base.
(3) Medium pulse can be set to 1500 or 750 Hz base.
(4) Pulse to pulse jitter can be selected and set to ±15 m s
from nominal.
DI AG NOS TICS
39 The Algorithms in this chapter provide an aid to fault
diagnosis in the transceiver. The algorithms enable
fault diagnosis down to module level and also identify wiring
faults. Entry to the algorithms is via Failure Messages
generated by the display.
PRE-REQ UI SITES
40 Before any rectification is implemented, the radar
system must be in a standard configuration, as shown
at the top of the algorithm.
FAIL URE MES SAGES
41
These failure messages appear in the data field of the
display monitor if certain signals are missing. See
Table 2 for details.
42
Fault diagnosis algorithms covering these failures are
provided in
Figures 10c to 17c .
May 01 7c.10 Original
KH 2020
Chap 7c
Frequency: 3050 ± 10MHz
Peak Power
output: 30kW nominal
Magnetron Life:
10,000 Hours typical
Pulse Length and
P.R.F:
Short: (S):
Nominal 0.055
m
s
1500pps ± 40 or 3000pps ± 100
Medium (M)
Nominal 0.25 m s
750pps ± 20 or 1500pps ± 40
Long (L)
Nominal 0.95 m s
750pps ± 20
Long-Low PRF
(VL)
Nominal 0.95 m s
375pps ± 10
Sync. Output: 1 x 75 Ohm output, not less than +12V
amplitude
Receiver (used for all transceivers):
Type: Logarithmic Receiver
I.F. 60MHz
Video Outputs 1 x 75 Ohm, +5.5V to 6V peak
amplitude.
System Overall
Noise Figure Nominal 4.5dB
Operating Temperature Ranges:
Turning
Mechanism,
Upmast
Transceiver:
Ambient Range: -25
0
C to +70
0
C
95% Humidity +40
0
C
Table 1 - Specification
SIGNAL FAILURE
MESSAGE
SIGNAL FAILURE
MESSAGE
Sync. No Sync. Azimuth No Azimuth
Video No Video Heading Line No Heading
Line
Table 2 Failure Messages