Service manual

X/P/K281C Operating and Service Manual 1
General Information
General Information
Description
The X281C, P281C, and K281C adapters provide a convenient means of
coupling between waveguide and coaxial systems. Power can be transmitted
in either direction, and each adapter covers the full frequency range of its
waveguide size. A step-like internal structure transforms the waveguide
impedance to the 50
Ω impedance of the coaxial line.
Option 006 Option 006 adds two alignment holes to the waveguide flange. The
dimensions of the Option 006 alignment holes are provided in the following
table.
Figure 1 K281C Option 006 Waveguide Alignment Holes
Table 1 Option 006 Alignment Hole Measurement Dimensions
Model Number
Alignment Hole
Diameter “A”
Dimension “B” Dimension “C”
X281C 3.175 mm
(+ 0.014 to 0.0)
15.49 mm 16.26 mm
P281C 3.175 mm
(+0.014 to 0.0)
12.62 mm 12.14 mm
K281C 2.381 mm
(+0.014 to 0.0)
8.13 mm 8.51 mm