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Customizing an SMD Test Fixture
Create a New PC Board
The customer is responsible to design and layout a microstrip line PC board with
the contact pattern to match the device(s) being tested. A DXF CAD file for the
PC board is available at www.keysight.com/find/PD1000A. Carefully layout the
microstrip line PC board following the guidelines in the DXF CAD file. The board
must not exceed the 30 mm x 36 mm (shown below) to fit inside the SMD Test
Fixture frame. Solder pads must extend to the edges of the board to permit
soldering the frame SMA center connector pins to the PC board.
Figure 18 below shows the microstrip line PC board provided with the PD1000A
SMD Test Fixture. Yours will be different. TO-263-7 package shown for
orientation and size reference. Dimensions shown are the critical dimensions, all
dimensions are in mm. Shaded area represents copper clad on the PC board.
Figure 18 PD1000A SMD Test Fixture PC Board Guidelines.
Several very good web sites that provide calculations for microstrip line layout to
maintain the 50 Ω characteristic impedance. The following example presents
general guidelines.
Keysight PD1000A Test Fixture Operating Guide
All dimensions in mm.
Important: The RF signal lines must maintain a 50 Ω impedance by
microstrip line.
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