Lowrance HDS-9 LIVE HDS Live Operator Manual - Page 143

Alarm settings, Sensitivity, MARPA targets, MARPA target symbols

Get Lowrance HDS-9 LIVE PDF manuals and user guides View all Lowrance HDS-9 LIVE manuals
Add to My Manuals
Save this manual to your list of manuals

Page 143 highlights

Alarm settings An alarm is activated when a radar target breaches the guard zone limits. You can select if the alarm is activated when the target enters or exits the zone. Sensitivity The guard zone sensitivity can be adjusted to eliminate alarms for small targets. MARPA targets If the system includes a heading sensor, the MARPA function (Mini Automatic Radar Plotting Aid) can be used to track up to ten radar targets. You can set alarms to notify you if a target gets too close. Refer to "Radar settings" on page 146. MARPA tracking is an important tool for collision avoidance. Ú Note: MARPA requires heading data for both the radar and the unit. MARPA target symbols The system uses the target symbols shown below. Acquiring MARPA target. Typically it takes up to 10 full rotations of the scanner. Tracking MARPA target, not moving or at anchor. Tracking and safe MARPA target with extension lines. Dangerous MARPA target. A target is defined as dangerous when it enters the guard zone defined on the radar panel. When no signals have been received within a time limit a target will be defined as lost. The target symbol represents the last valid position of the target before the reception of data was lost. Radar| HDS Live Operator Manual 143

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
Alarm settings
An alarm is activated when a radar target breaches the guard zone
limits. You can select if the alarm is activated when the target enters
or exits the zone.
Sensitivity
The guard zone sensitivity can be adjusted to eliminate alarms for
small targets.
MARPA targets
If the system includes a heading sensor, the MARPA function (Mini
Automatic Radar Plotting Aid) can be used to track up to ten radar
targets.
You can set alarms to notify you if a target gets too close. Refer to
"Radar settings"
on page 146.
MARPA tracking is an important tool for collision avoidance.
Ú
Note:
MARPA requires heading data for both the radar and the
unit.
MARPA target symbols
The system uses the target symbols shown below.
Acquiring MARPA target. Typically it takes up to 10 full
rotations of the scanner.
Tracking MARPA target, not moving or at anchor.
Tracking and safe MARPA target with extension lines.
Dangerous MARPA target.
A target is defined as dangerous when it enters the guard
zone defined on the radar panel.
When no signals have been received within a time limit a
target will be defined as lost.
The target symbol represents the last valid position of the
target before the reception of data was lost.
Radar
| HDS Live Operator Manual
143