Princeton Instruments NIRvana-LN, Руководство пользователя, Страница: 56 / 122

56 NIRvana
™
-LN System Manual Issue 4
10.
Determine if the shutter is operating properly. While running in Focus mode, it should
be possible to hear the shutter opening and closing.
•
If the shutter can be heard opening and closing, and step 3 through step 8 have all
been performed, turn on the light source and observe the data being displayed.
After approximately one minute turn off the light source while viewing the data
display. Does the displayed image change to a background noise pattern or low
intensity graph?
— Yes
Proceed to Section 6.7, Rotational Alignment , on page 56.
— No
Stop data acquisition.
Contact Customer Support for assistance. Refer to
Contact Information on
page 120 for complete contact information.
6.7 Rotational Alignment
Perform the following procedure to rotationally align a NIRvana-LN camera:
1.
Mount a Princeton Instruments light source such as the IntelliCal light source in front of
the entrance slit of the spectrograph.
2.
With the spectrograph properly connected to the computer, turn the power on, wait for
the spectrograph to initialize.
3.
With the NIRvana-LN mounted to the spectrograph and connected to the computer, turn
on the power and wait for the camera to initialize. If the camera is LN-cooled, the
Dewar should be filled while the camera is ON.
4.
Verify that the spectrograph has been defined, choose the grating, and set the grating to
763.51 nm if using an NeAr light.
REFERENCES:
Refer to Section 6.5, Configure IsoPlane SCT-320 Parameters ,
on page 54 for information about defining a spectrograph and
moving the grating.
5. Set the slit to 25 µm. If necessary, adjust the Exposure Time to maintain optimum, near
full-scale signal intensity.
6.
Wait until the camera temperature locks at its default temperature.
NOTE:
At this time, it may be advantageous to change the
Shutter
Control
setting to
Disable Opened
.
7. Turn on Focus mode.
8.
Use a 9/64” hex wrench to loosen the four (4) screws at the corners of the camera
mounting plate.
9.
While watching a live display of the spectrum, select a peak to monitor.