docs/tutorial/adding_channels.rst

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1 Adding a channel
2 ===============
3
4 After adding a system, a telescope and a laser to the database, you need to add a new channel.
5 To do this, click on the **HOI channels** in the *System settings* panel.
6 This will take you to a page with a list of all availabe channels that are connected with your lidar systems.
7 This list should be empty if this is the first time you add a system.
8
9 To add a new channel to the database click on **Add HOI channel** at the top right of the screen.
10 This will take you to a new page were you can fill in the needed information. As before, the fields in **bold**
11 are mandatory and you will need to fill them before you can save you new system.
12
13 The fileds you have to fill here are more, as many of these are used during the processing of measurements.
14
15 .. warning::
16
17 There is a last step, different from the previous cases, when saving a new channel. You need to connect your channel with
18 a lidar system before you save, or else all your entry will be lost. Read carefully through this document (or directly
19 the :ref:`last section <connect-channel-to-system>`) to avoid any problems.
20
21
22 Fill in the fields
23 ------------------
24
25 To start using the single calculus chain you will need to fill the following fields:
26
27 Name
28 The name of the channel ex. "355", "1064 analog" etc.
29
30 Telescope
31 The telescope that is used for this channel
32
33 Laser
34 The laser that is used for this channel
35
36 Interference filter center
37 The center of the interference filter in nm
38
39 Interference filter FWHM
40 The FWHM of the interference filter in nm
41
42 Emission wavelength
43 The emission wavelength of the laser used for this channel
44
45 Field of view
46 The field of view realated to this channel in mrad
47
48 Raw range resolution
49 The raw range resolution of the measured data in m
50
51 Dead time
52 The dead of the detector in ns. You should fill in this in case
53 of a photon counting detector.
54
55 Trigger delay
56 The trigger delay value for the channel in ns. Fill in 0 if not needed.
57
58 Scattering mechanism
59 The scattering mechanism that is involved in this channel. Select the appropriate value from the drop-down list.
60
61 Dead time correction type
62 The dead time correction type to be applied. Select *Not defined* if none needs to be defined.
63
64 Background mode
65 The way to calculate the singal background. Select *Not defined* if none needs to be defined.
66
67 Signal type
68 The type of the singal that is measured, ex. "elT" for total elastic, "vrRN2" for vibrational-rotational
69 Raman signal from Nitrogen melecules etc. See :ref:`signal-types` for details.
70
71 Detection mode
72 The detection mode of this channel.
73
74 .. _connect-channel-to-system:
75
76 Connecting to a system
77 ----------------------
78
79 Before you finish, you need to attach your channel to one of your systems. To do this, go at the bottom of the page and
80 select your system from the drop-down list in the **System channels** area.
81
82 When you are done, press the **save** button at the bottom right of the page.
83 This will take you back to the list of your channels.
84 If everything went OK your new channel you just added should appear in the list.
85
86

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