Agilent Technologies 1660A Series User Reference page 32

Probing
Assembling the Probing System
Connecting Probe Cables to the Logic Analyzer
All probe cables are installed at the factory. If you need to replace a probe
cable, refer to the Service Guide that is supplied with the logic analyzer.
Connecting the Probe Tip Assembly to the Probe Cable
To connect a probe tip assembly to a cable, align the key on the cable
connector with the slot on the probe housing and press them together.
Probe tip assembly
Probe cable
Connecting Probe Tip Assembly
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