IL3 User’s Guide
11S-3002B
page 27
4-3 Setting Bit Depth
The IL3 can record and save 10-bit or 8-bit data. The advantage of recording 10-bit data is that it gives
more flexibility in post-processing the imagery. The disadvantage is that it takes more memory to
record or save 10-bit data. When recording, you will get about 25% fewer files, and 25% less recording
time.
When saving 10-bit data (to a mass storage device) in TIFF (RAW) format, the actual file type is a 16-
bit file, so it is substantially larger than an 8-bit mono file. The 10-bit (RAW) color image, however is
not colorized--it is a RAW Bayer image (not “colorized,” which would make it about 3x as large), so it is
about 2/3 the size of the 24-bit color file (8 bits per each of 3 color channels).
To choose the recording bit depth:
1. Navigate to the Record Menu.
2. Select Bit Depth.
3. Select 8-low, 8-mid, 8-high, or 10-bit. If any of the 8-bit mappings are chosen, the live image will
immediately reflect that change. If 10-bit is chosen, the displayed live image will default to 8-high.
If Bit Depth is set to 10 in the Record Menu, a bit depth selection will appear in the The Display Menu.
The choices here are 8-low, 8-mid, and 8-high. This selects the 8-bits used for the display and for
saving to media.
4-4 Configuring the Trigger
The IL3 uses a fixed, selectable circular buffer to record into.
The session length is determined by the user (see “3-9 Storage
Setup” on page 21). This section explains how to set the trigger
position within the buffer. For an explanation on how the circular
buffer works and how to decide on the proper trigger position see
“Application Note 3: Trigger Position and the Circular Buffer” on
page 64.
To Set the
Trigger Position
in the IL3:
1. Open the Record Settings Tab.
2. Select either the “Use Percent” or “Use Frames” radio button.
The slider and edit box represent the session buffer, which is
the camera memory you will be recording into. The trigger position, expressed either in % or
frames.
3. Set the position by moving the slider or typing into the edit box or using the spinner buttons.
Enabling the External Trigger
There are times when you wish to activate the trigger electrically, either to sync the trigger with
other cameras or signals, or to maintain greater precision than can be expected through the software
trigger in Fas
M
otion.
1. Open the Record Settings Tab.
2. Click on the pull-down in the External Trigger box to expose the choices, which are: Rising, Falling,
or Disabled.
3. Choose “Rising” for rising signals or a switch opening and “Falling” for a falling signal or switch
closure.
Please refer to “Appendix D: Power and I/O Connections” on page 85 for connection information
and warnings.
Figure 4-3:
Trigger Configuration
