Q & A
8-6
22. To change the power source type for temporary use.
See page.4-64.
To change the type of AC power supply:
Change the jumper setting of J108 on the PWR board (03P9339).
- 100 VAC: Jumper between 1-2, 4-7 and 5-8.
- 220 VAC: Open the jumper.
Note: After changing the setting of the AC power input type, it is required to
make adjustments of over voltage protection of R21 on the PWR board.
To change the type of DC power supply:
Change the jumper setting of JP1 on the PWR board (03P9338).
- 12-24 VDC: Jumper
- 24 VDC: Open
23. Give the information on the loss of a waveguide.
Arrange the units so as to minimize the loss of the waveguide.
Radar Item Loss Remarks
S-band LHPX-20D
High-frequency
Co-axial cable
0.095 dB/m
Minimum bending radius
- Single: R15 mm
- Repeated: R250 mm
FR-9 Rect-guide 0.086 dB/m
Minimum bending radius
- E side: 200 mm
- H side: 400 mm
- Torsion: 10 deg./m or less
WRJ-9
Rectangular
waveguide tube
0.072 dB/m
E bend 0.15 dB/piece
H bend 0.15 dB/piece
X-band
For WRJ-9
parts
Twist
waveguide
0.3 dB/piece
24. Sometimes the setting is not saved.
See page.4-1.
When the setting is changed, wait for at least 6 seconds before turning off the
power. If the power is turned off within 6 seconds after changing the setting, the
setting may not be saved in the flash memory.
25. When the power is restarted immediately after turning the power off,
the ST-BY status starts within 3 minutes.
When the power is restarted in a short while after turning it off, the Magnetron
has still been warmed up. In this case, 3 minutes delay time is not necessary,
resulting in shortened delay time. Since the delay time is determined by
detecting the voltage of the capacitor C304 on the SPU board, the delay time
varies depending on the detected voltage.
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