MIRcat OPERATION
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D11-00028-02-A Page 32 of 54
Scan Menu
Scan Settings:
The Scan Mode menu allows the user to choose from several different scan modes. The 3 main types are:
Sweep Mode, Step and Measure Mode, and Multi-Spectral Mode. The user can also select Sweep Mode Units,
Start/Stop values, Bi-directional Scan, Swap Start/Stop values, set the Number of Scans or an infinite
number of scans. Once these values are entered, the user can Arm the laser and click either of the Start Scan
buttons to enable laser emissions from MIRcat and start the scan. Clicking either button will stop the scan
and stop emissions.
The Sweep mode offers the option of adding Wavelength Triggers during the scan to calibrate where the
laser is tuned to during the scan. This mode emits an electrical pulse on Pin3 of the DB-9 connector on each
interval as the laser tunes across the set range, using the Start/Stop Wavelength Trigger parameters
specified in the Laser Settings at the specified wavelength interval. For example, if scanning from 7 to 10
µm, and the WL trigger start and stop values are set to 7.5 µm and 9.5 µm, respectively, and the WL trigger
interval is every 0.1 µm, an electrical pulse will be emitted when the laser scans crosses 7.5 µm, 7.6 µm, 7.7
µm, etc.
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