NIRStar 14.1 - User Manual
Page 70 of 124
Event Trigger Markers
Records the event markers received by the digital trigger inputs, with time stamp and frame number.
Column 1: Time (in seconds) of trigger event after the scan started.
Column 2: Trigger channel identifier, or condition marker. Triggers received on each digital input DIx
(where x denotes the trigger channel) on the front panel are encoded as numbers 2
DI(x-1)
, e.g. DI1, DI2,
and DI3 are encoded as 1, 2, and 8, respectively. The file stores the sum of simultaneously triggered
inputs in decimal representation. By using combinations of trigger inputs, as many as 15 conditions can
be encoded by NIRScout and NIRSport systems, while NIRScoutX receives up to 255 conditions (8 inputs).
Column 3: The number of the scan frame during which the trigger event was received.
[Markers]
Events=#
86.40 1 300 Trigger of input 1 recorded after 1.80 s, during frame no. 12
116.40 2 404
146.40 1 508
... ... ...
476.39 2 1654
#
Data Structure
This section records the arrangement of detector channels in the .wl1 and .wl2 files, and the channel
masking pattern.
[DataStructure]
S-D-Key="1-1:1,1-2:2,1-3:3,1-4:4,1-5:5,1-6:6,1-7:7,1-8:8,1-9:9,1-10:10,
...
S-D-Mask=#
1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0
0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0
...
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#"
'S-D-Key' (source-detector key) denotes the order in which the columns of the data files (*.wl1, *.wl2)
are assigned to source-detector combinations. Each channel is denoted by the source number, a minus
sign ('-') and the detector number. The channel pair is followed by a colon (:) and the corresponding
column index in the optical data files. The column index is followed by a comma (',') and the next
channel. This variable may be read to generate a table header for the data files.
'S-D-Mask' stores the masking pattern in a table (for channel masking, see Section 5.5). Channels that
are set not to be displayed are identified by '0's, while channels set to be displayed are labeled with '1's.
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