MDC-5200/5500 Series
Chapter 2 Radar Basic Operation
0093155002-00
2-15
2.9 Change transmission pulse width (SP/LP)
This radar provides a function capable of achieving suitable target detection by manually changing the
transmission pulse width.
Eight different pulse widths are available.
4 kW
6 kW / 12 kW / 25 kW
IF Band width
Pulse width
PRF
Pulse width
PRF
S1 0.08
μ
s 2000Hz 0.08
μ
s 2600Hz 15MHz
S2 0.15
μ
s 2600Hz 15MHz
M1 0.2
μ
s 1800Hz
0.3
μ
s 2400Hz
15MHz
M2 0.3
μ
s 1500Hz
0.4
μ
s 2000Hz
3MHz
M3 0.6
μ
s 1400Hz
3MHz
L1 0.6
μ
s 800Hz 0.8
μ
s 1000Hz
3MHz
L2 1.2
μ
s 500Hz 1.2
μ
s 600Hz 3MHz
L3 1.2
μ
s 450Hz 3MHz
The short (narrow) pulse width used in short range has high resolution and is effective for dense
targets.
The long (wide) pulse width used in long range has high gain (sensitivity) and is effective for detecting
small targets.
Two different pulse widths are set by default in the following ranges, 0.75NM, 1.5NM, 3NM and 6NM.
Ranges 0.5NM and below, and 12NM and above are setup with same pulse width in SP and LP.
Note: Refer to 2.29 Pulse width to set pulse width.
Range(NM) 0.125 0.25 0.5 0.75 1.5
3 6 12 24 32 48* 64**
96***
SP
mode S1 S1 S1 S1 S2 M1
M3
L2 L2 L2 L2 L3 L3
LP
mode S1 S1 S1 S2 M1
M3
L2 L2 L2 L2 L2 L3 L3
*Maximum range of the initial value at 4kW is 48NM.
**Maximum range of the initial value at 6kW and 12kW is 64NM.
*** Maximum range of the initial value at 25kW is 96NM.
1
Move cursor on the PULSE WIDTH display, and press ENT key. Two different pulse widths are
toggled by each key press.
Current pulse width is shown at the upper left of the display.
Note: Pulse width can be changed directly to press SP/LP key. (MDC-5500 series only)
ENT key
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