Smiths Kelvin Hughes Nucleus 3 5000 Series, Системный справочник

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SPECIFICATION
12 Technical specifications for the MkV Transceivers are
provided in Table 1 below.
NOTES:
The PRF Oscillator can be preset with a basic frequency
range of 700Hz to 800Hz (nominally set to 750Hz). Dual
PRF version for high speed craft.
DIAGNOSTICS
13 The Algorithms detailed in Figures 5b to 7b provide an
aid to fault diagnosis in the transceiver. Entry to the
algorithms is via Failure Messages generated at the display.
PRE-REQUISITES
14
Before any fault diagnosis and rectification is
implemented, the radar system must be in a standard
configuration, as detailed at the top of the appropriate fault
diagnosis algorithm.
FAIL URE MESSAGES
15 The following failure messages, appear in the data
field of the display monitor if certain signals are
missing:
"Sync/Video Missing"
"No Azimuth"
"No Heading Line"
16
Refer to Figures 5b to 7b, for fault diagnosis algorithms
associated with these failures.
TEST EQUIPMENT
17
Routine field maintenance requires fault location down
to fuse replacement level, or to change suspect
PCBs/Units for known working ones. The only test
equipment required for fault finding is a high impedance
Multimeter and a 100MHz Oscilloscope.
Original 7b.3 May 01
KH 2020
Chap 7b
Frequency:
X (I) -Band 9410 ± 30MHz
Peak Power output: X-Band 10kW nominal
Magnetron Life:
10,000 Hours typical
Pulse Length and P.R.F: 10kW
Short: (S): 55ns
3000pps*
Medium (M) 230ns
1500pps*
Long (L) 600ns
750pps*
Very Long (VL) 600ns
375pps*
Sync. Output:
1 x 75 Ohm, not less than
+12V amplitude
Receiver (used for all transceivers):
Type: Logarithmic Receiver
I.F. 60MHz
Video Outputs 3 x 75 Ohm, not less than
5.5V peak amplitude.
Table 1 - MkV Transceiver Specification