29 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet
Probing Solutions for 90-pin Logic Analyzers
Soft Touch Connectorless Probing (Continued)
Probe footprint dimensions
Use these probe footprint dimensions for the PC board pads and holes for attaching the
retention module.
Soft touch
34.04 mm
29.97 mm
26.00 mm
1.00 mm typ
1.99 mm
2.03 mm
B
0.81 0.03 mm
(keying/alignment hole)
C
2.53 mm
0.79 0.08 mm pth
R 0.29 mm
3.49 mm
.15 B
.15
B
B27
B1
A27
A1
1.27 mm
2.41 mm
footprint keep
out boundary
0.71 mm
pad height 54x
1.35 mm
retention hole pads
both sides
A
6.99 mm
3.25 mm
1.83 mm
0.58 mm
pad width 54x
1
2
1
2
0.79 0.08 mm
pth 4x
Half-size soft touch
Notes:
1.
4.
Must maintain a solder mask web between pads when traces are
routed between the pads on the same layer. Soldermask may not
encroach onto the pads within the pad dimension shown.
Footprint is compatible with retention module,
Keysight part # E5387-68702.
5.
6.
Retention module dimensions are 34.04 mm x 7.01 mm x 4.98 mm
tall relative to the top surface of the PDB. Retention pins extend
4.32 mm beyond the bottom surface of the RM through the PCB.
2.
Via in pad not allowed on these pads. Via edges may be tangent
to pad edges as long as a solder mask web between vias and pads
is maintained.
Assume normal artwork tolerances for pad size dimensions.
3. Permissible surface finishes on pads are HASL, immersion silver,
or gold over nickel.
Figure 4.22. Footprint dimensions.
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