General Information; Introduction; Features - Keithley 7021 Instruction Manual

Introduction

This section contains general information about the Model
7021 multiplexer-digital I/O card.
The Model 7021 consists of a multi-pin (mass termination)
connector card and a relay card. Any external test circuit con-
nections are made via the 96-pin male DIN connector on the
connector card. Keithley offers a variety of optional accesso-
ries at the end of this section that can be used to make con-
nections to the connector card.
The rest of Section 1 is arranged in the following manner:
•

Features

• Warranty information
• Manual addenda
• Safety symbols and terms
• Specifications
• Unpacking and inspection
• Optional accessories
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General Information

Features
The Model 7021 has two-pole, independent 1 × 12 and 1 × 18
multiplex banks and ten independent inputs and outputs for
both multiplexer and digital I/O capabilities. Some of the key
features include:
• Low contact potential and offset current for minimal ef-
fects on low-level signals.
• Easy jumper configuration for one or two multiplex
banks.
• Backplane jumpers. Cutting jumpers disconnects multi-
plexer bank outputs from the Model 7001/7002 analog
backplane.
• Model 7011-KIT-R connector assembly kit that includes
a 96-pin female DIN connector that will mate directly to
the connector on the Model 7021 or to a standard 96-pin
male DIN bulkhead connector (see Model 7011-MTR).
This connector uses solder cups for connections to ex-
ternal circuitry and includes an adapter for a round cable
and the housing.
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