General Information 1
Agilent 5517B/BL/C/D/DL/FL User’s Guide 3
The physical differences between the 5517B/C/D and 5517BL/DL/FL are:
• 5517B/C/D has a non- vented cover as shown in Figure 1.
• 5517BL/DL/FL has a vented cover for heat isolation as shown in
Figure 1.
• 5517B/C/D beam height is 79.5 mm (see Figure 26 on page 78).
• 5517BL/DL/FL beam height is 80.8 mm (see Figure 27 on page 79).
Figure 1 Agilent 5517B/C/D and 5517BL/DL/FL Laser Heads
Table 1 lists the physical and operating differences. The primary difference
between the laser heads is the difference between their laser beam
reference frequencies. A larger frequency difference allows measurements
involving motion to be made at higher velocities (slew rates). See Chapter
4, Specifications for complete specifications on each model.
AVOID EXPOSURE
LASER LIGHT EMISSION FROM THIS APERTURE
Agilent 5517BL/DL/FL
Laser Head
Agilent 5517B/C/D
Laser Head
AVOID EXPOSURE
LASER LIGHT EMISSION FROM THIS APERTURE
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