Teledyne Princeton Instruments IsoPlane 81, Manual

Page: 47 / 62

Appendix C Changing Gratings 47
C.2.2 Grating Carrier Alignment Procedure
Perform the following procedure to align a grating carrier in the IsoPlane 81:
1. Using the tool specified in Table C-1, loosen the following adjustment screws:
• L11;
• L12;
• L21;
• L22.
2. Illuminate the entrance slit using a mercury (Hg) atomic emission lamp.
NOTE:
If a mercury (Hg) atomic emission lamp is not available,
fluorescent room lights or any other atomic emission
source that emits in the target wavelength range may be
used.
3. Position the grating at 0 nm. Verify the entrance slit is installed and properly
focused.
4. Figure C-12 illustrates, in flowchart format, the procedure required to align a
grating. Perform this iterative procedure until the grating is properly aligned.
NOTE:
When using fluorescent room lights or other atomic
emission source to align the grating, in addition to the 0 nm
line, a second visible line as far from 0 nm as possible, while
still being convenient, must be used when making
adjustments indicated in Figure C-12.