Simrad NX45 Specifications Page 48
- Page / 120
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
Simrad NX40/45 Installation and Operation Manual48
Use the A-Scope while adjusting the gain and threshold
settings manually.
Setting gain and threshold
It is convenient to use the A-scope window when adjusting
gain and threshold manually. Follow this procedure to
adjust gain and threshold for normal circumstances:
Switch to a echosounder window. If necessary, press •
to adjust range so that the bottom is shown.
If necessary, select the echosounder frequency •
to adjust the settings for. Press
, select
Frequency and select 200 kHz or 50 kHz.
•
> Echosounder splits > Split A-scope.
Press •
to display the Gain window. To adjust gain
or threshold for a frequency, press
up or down
to select the setting to adjust, then press
left or
right to change the setting.
Set threshold to zero.•
Adjust Gain so the peak of the strong signal from the •
bottom just touches the gain line.
Adjust threshold so that it is just to the right of the •
noise.
Press •
to close the gain window.
If required, repeat these steps to adjust gain and •
threshold for the other frequency.
Note: Setting the gain higher will display more detail
from weak echoes, like sh, but will loose detail from the
strong echo from the bottom.
Fish recognition
The echo strengths shown on the A-scope can be useful
in recognizing the type of sh. Different species of sh
have different sizes and shapes of swim bladders. The
air in the swim bladder reects the ultrasonic pulse, so
the strength of the echo varies between sh species
according to the size and shape of the swim bladder.
When catching sh from a school, note the species and
the strength of the echo that it returns on the A-scope.
Then, when that particular echo is seen again, it is likely
to be the same sh species.
Bottom type
The shape of the echo strengths in the A-Scope can help
you to recognise the type of bottom.
- NX40/45 1
- NavStation 1
- Contents 3
- Overview1 7
- 1-3 Plug-in cards 8
- Removing the display unit 9
- Replacing the display unit 9
- Basic Operation2 10
- 2-4 Man overboard (MOB) 13
- 2-5 Alarms 13
- 2-7 The main windows 14
- 2-6 Simulate mode 14
- Simulate > Simulate > 14
- > More 15
- Red border 16
- Navigation: Chart3 19
- 3-2 Chart window 21
- 3-2-1 Chart modes 22
- 3-2-2 Latitude and longitude 22
- 3-5 Tracks and tracking 25
- 3-4 Projected course 25
- Video window4 26
- Navigation: Highway window5 27
- Navigation: Waypoints6 28
- Navigation: Routes7 31
- Satellites8 35
- 9-1 Using the unit 36
- 9-2 Interpreting the display 37
- Strength of echoes 37
- Frequency and cone width 38
- Bottom types 38
- When to use Mixed 40
- When to use 50/200 kHz 40
- 50 kHz display 41
- 200 kHz display 41
- Where to nd sh 42
- Fish arches 42
- 9-5 Range 43
- Range > 43
- Zoom range and offset 43
- 9-6 Gain and threshold 43
- The gain window 44
- Threshold 44
- Echosounder10 45
- 10-1-1 Extended history mode 46
- Bottom lock > On or Off 47
- 10-3 Echosounder split window 47
- Setting gain and threshold 48
- Fish recognition 48
- Bottom type 48
- Gauges window11 49
- Data window12 50
- Fuel functions and display13 51
- B - Part ll a tank 53
- Add fuel 53
- C - Removing fuel 53
- Set remaining 53
- Set Remaining menu to 53
- For Example 1 55
- 13-6 Fuel consumption curves 55
- 13-7 Calibration 58
- Fuel > Setup engines 58
- Calibrate and change 58
- Tides window14 59
- User card window15 60
- 16-1 Viewing AIS Vessels 62
- TCPA 15 min 63
- CPA 0.5 nm 63
- Safety msgs (rx) 64
- to turn SmartCraft Off 65
- or > to conrm 66
- to conrm 66
- 17-3-4 Trim indicator 68
- Radar 18 70
- 18-6-1 Changing the gain mode 72
- Adjust Radar > Gain Mode 72
- oating VRM/EBL 76
- from the center to give 77
- Setting up the NX40/4519 80
- 19-1 Setup > System 81
- 19-2 Setup > Chart 82
- If you select a map datum 83
- It should 83
- Set > 84
- General submenu 84
- Land submenu 85
- Other submenu 85
- 19-4 Setup > Radar 87
- Radar > Installation 90
- 19-5 Setup > GPS 91
- 19-6 Setup > Fuel 92
- 19-7 Setup > Track 93
- 19-8 Setup > AIS 94
- 19-11 Setup > Units 96
- 19-12 Setup > Comms 96
- 19-13 Setup > Calibrate 97
- Calibrate 97
- 19-14 Setup > Time 98
- 19-15 Setup > Favorites 99
- 19-16 Setup > Simulate 99
- Simulate 99
- Installation 20 100
- GA B C D E F 101
- Flush Mounting the NX40/45 102
- Bracket Mounting the NX40/45 103
- Installing an antenna 105
- Echosounder to 105
- 20-9 Installation: SmartCraft 106
- 20-10 Installation: Radar 107
- Power cable 108
- Specications21 109
- COMMUNICATIONS 110
- STANDARDS COMPLIANCE 110
- Simrad NX45 111
- Simrad NX40 111
- List of datums 112
- Troubleshooting22 113
- B-3 Fuel consumption problems 114
- Economy 114
- B-4 echosounder shnding 115
- B-5 Radar problems 116
- Navigation data24 118
- Compliance statements25 119
Related products and manuals for Car navigation systems Simrad NX45
(100 pages)© 2020, manymanuals.com. All rights reserved. | 2.052 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals