OPHIR Pyrocam IIIHR, User Manual

Page: 11 / 42

Pyrocam III
HR
User Guide Document No. 50361-001 Rev E 7/18/2017 Page 11
The Pyrocam has a video gain control to help with viewing lower intensity lasers. The number in
the slide control does not correspond to the actual gain in V/V. The corresponding gain for each
setting is shown in Table 1.
Gain Setting Gain (V/V)
1 1.00
2 1.14
3 1.33
4 1.60
5 2.00
6 2.66
7 4.00
8 8.00
Table 1 - Gain Control Settings
Hint: Always remember to re- Ultracal after changing the Gain setting.
Bad Pixel Correction
Click this control to enable/disable bad pixel (BP) correction in the Pyrocam. Bad pixel correction
will default in the ON state and should always be enabled except when looking for defective
pixels. If this control is deactivated, it indicates that the Pyrocam does not have a Bad Pixel map
programmed. The procedure for finding and correcting bad pixels is described in APPENDIX C.
NOTE: The Pyrocam has separate Bad Pixel Correction maps programmed for pulsed and
chopped operation. Two BP maps are created at the factory and are flashed into the
Pyrocam’s EEPROM memory. The factory BP maps are also supplied as two files that can
be reloaded in the event that the internal maps are accidentally deleted or corrupted. BP
maps can also be read from the Pyrocam and saved into a BP map file.
Click on the expansion button to modify or create a BP correction map. This is done by working
with a
List
that contains the coordinates of the pixels to be BP mapped. This
List
is an
intermediate device that is employed to transfer the BP map to/from the Pyrocam or to/from a
BP text file. The
Bad Pixel Correction Dialog tools can:
 Read a BP
List
from the Pyrocam
 Write a BP
List
into the Pyrocam
 Add (mark) a single BP to the BP
List
 Remove (unmark) a single BP from the BP
List
 Add (mark) a row of BP’s to the BP
List
 Remove (unmark) a row of BP’s from the BP
List
 Add (mark) a column of BP’s to the BP
List
 Remove (unmark) a column of BP’s from the BP
List
 Clear a BP
List
 Save a BP
List
into a BP text file
 Load a BP
List
from a BP text file
 Show/Hide the marked pixels in the
List