5968-4632E Datasheet, PDF (49/77 Pages) Keysight Technologies – Probing Solutions for Logic Analyzers

49 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet
Probing Solutions for 40-pin Logic Analyzers
General-Purpose Probing (Continued)
IC clips
The surface-mount device IC clip with
twin hooks (part number 5090-4833,
containing 20 IC clips) is designed for fine
surface-mounted component leads. The
twin hook 0.5 mm IC clip (part number
10467-68701, containing four 0.5 mm
IC clips), is very useful for 0.5 mm pitch
components. See Figure 9.5.
Grounding
There are three methods of grounding
the probe system. First, the entire probe
lead set can be grounded through the
common ground. This requires only one
connection, but is not recommended
because it will cause poor signal fidelity
in systems with fast transition times. The
recommended method is to individually
ground each probe lead. This yields
optimal signal fidelity and is required for
signals with faster transition times
(< 4 to 5 ns).
For moderate rise times (greater than
2 ns), it may be acceptable to ground
every other (or every fourth) ground
connection to the target.
Probe ground leads
RC network housing
Signal leads
SMT IC clip
Figure 9.4. Connecting IC clips and ground leads to probes.
5090-4833
10467-68701
Figure 9.5. SMD IC clip and 0.5 mm IC clip.
Figure 9.6. Typical IC test clips available from commercial test clip vendors.