317
Caution
3.4.5 Control Sensitivity
[GAIN/PL]
Procedure
1 Control noise on the radar display by turning the [GAIN/PL] control until
targets can be easily observed.
Turning
[GAIN/PL]
control clockwise increases sensitivity.
Turning
[GAIN/PL]
control counterclockwise decreases sensitivity.
Turning the
[GAIN/PL]
control clockwise increases receiving sensitivity and extends the radar
observation range. If the sensitivity is too high, the receiver noise increases reducing the
contrast between the targets and the background video. As a result, the targets become
obscure on the radar display.
To observe densely crowded targets or short-range targets, turn the
[GAIN/PL]
control
counterclockwise to reduce the sensitivity so that the targets are easy to observe. However,
be careful not to overlook important small targets.
If sensitivity is set too high, unnecessary signals such
as noises in the receiver and false echoes increase to
lower target visibility.
At the same time, if sensitivity is set too low, detection
of targets such as ships and dangerous objects may be
hindered.
Therefore, sensitivity must always be set to an optimal
level.
Summary of Contents for JMA-5212-4
Page 2: ......
Page 18: ... xii NKE 2103 6 6HS Scanner Unit NKE 2254 7 9 6HS Scanner Unit Warning Label Warning Label ...
Page 19: ... xiii ...
Page 38: ... xxxii ...
Page 45: ...1 4 EXTERIOR DRAWINGS 1 6 1 y Fig 1 1 Exterior Drawing of Scanner Unit Type NKE 2103 4 ...
Page 46: ...1 7 Fig 1 2 Exterior Drawing of Scanner Unit Type NKE 2103 6 ...
Page 47: ...1 4 EXTERIOR DRAWINGS 1 8 1 y Fig 1 3 Exterior Drawing of Scanner Unit Type NKE 2254 7 ...
Page 48: ...1 9 Fig 1 4 Exterior Drawing of Scanner Unit Type NKE 2254 9 ...
Page 49: ...1 4 EXTERIOR DRAWINGS 1 10 1 y Fig 1 5 Exterior Drawing of Monitor Unit Type NWZ 164 ...
Page 50: ...1 11 Fig 1 6 Exterior Drawing of Processor Unit Type NDC 1460 ...
Page 51: ...1 4 EXTERIOR DRAWINGS 1 12 1 y Fig 1 7 Exterior Drawing of Keyboard Unit Type NCE 7699A ...
Page 52: ...1 13 Fig 1 8 Exterior Drawing of NSK Unit Type NCT 4106A ...
Page 56: ...1 17 ...
Page 58: ...2 1 2 1 EXAMPLE OF DISPLAY ...
Page 78: ...2 21 ...
Page 234: ...3 155 ...
Page 316: ...5 75 ...
Page 332: ...6 15 ...
Page 358: ...7 25 Exit 1 Press RADAR MENU key The Main Menu will reappear ...
Page 434: ...8 39 ...
Page 452: ...10 5 ...
Page 477: ...Figure 8 NKE 2254 Interconnection Diagram of Scanner Unit ...
Page 493: ......