47 | Keysight | Probing Solutions for Logic Analyzers - Data Sheet
Probing Solutions for 40-pin Logic Analyzers
General-Purpose Probing
E5383A 17-channel single-ended flying lead probe
Ideal when only a few lines may need to be probed or probe points are distributed across
a target. The E5383A includes a set of 20 IC test clips and five ground leads.
Logic analysis general-purpose probes
General-purpose probing requires connecting probe leads to individual signal lines. This
method is most convenient for a small to moderate number of signals, is very flexible,
and can be used in conjunction with other probing methods.
Note: Any probed signal line must be able to supply a minimum of 600 mV to the probe
with the specified loading.
The standard probing system
The standard probing system consists of IC clips, probe leads, probe housing and
probe cable. Because it is passive, the standard probing system is smaller, lighter, and
much easier to use than active probing systems. This passive probing system is similar
to a probing system used on a high frequency oscilloscope. It consists of an isolation
network (as shown in Figure 9.1) at the probe tip and a shielded resistive transmission
line. The advantages of this system are:
– High input impedance. See Figure 9.1.
– Signal ground at the probe tip for high-speed signals.
– Inexpensive, removable probe tip assemblies.
Tip isolation network
Equivalent load
Figure 9.1. Probe tip Isolation network and equivalent load.
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