Specifications

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Chapter 8: Theory of Operation
The information in this chapter is to help you understand how the module
operates and what the self-tests are testing. This information is not intended for
component-level repair.
Block-Level Theory
The block-level theory of operation is divided into two parts: theory for the logic
analyzer used as a single-card module or as a master card in a multi-card module,
and theory for the logic analyzer used as an expander card in a multi-card
module. A block diagram is shown before each theory.
The 16740/41/42A logic analyzer
Probing. The probing system consists of a tip network, a probe cable, and
terminations which reside on the analyzer card. Each probe cable is made up of
two woven cables, each one carrying 16 data channels and 1 clock/data channel.
The four clock/data channels on each logic analyzer plus the 64 data channels on
each logic analyzer card results in a maximum of 68 available data acquisition
channels for each card.
Each channel of the probing system has its own ground. In addition the pod has a