Data Acquisition Probe - Tektronix 8001A Installation Manual

Reai-Time Prototype Analyzer
Data Acquisition Probe
The Data Acquisition Probe is an active nine channel logic information gathering device.
The Data Acquisition Probe circuitry consists of two hybrid circuits that comprise nine
low-gain FET amplifiers with differential ECL outputs. The nine Probe input channels have
a characteristic input impedance of 1 megohm.
Variable input threshold voltages allow the Data Acquisition Probe to be used with ECL,
TTL, or MOS circuitry. The threshold voltages used are supplied by the Data Acqusition
Interface of the Rea!-Time Prototype Analyzer. The nine signal leads and one ground lead
connect to the Probe head. One signai iead is dedicated to ciock information with the
remaining eight leads used for data gathering.
More complete information on the Data Acquisition Probe may be found in the data sheet
received with the Probe.
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Acquisition Probe and the Real-Time Trace module. Data from the Probe's eight information
channels is buffered and latched by the Probe to the Data Acquisition Interface. The Data
Acquisition Interface translates the information from an EC L level to a TTL level. The
information is then sent through a 26-connector ribbon cable to the Real-Time Trace
module.
8001/8002 Installation Guide
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