PA-695 Rev. C / 8-03
Model 7700, 7702, and 7703 Multiplexer Modules
User’s Guide
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
(440) 248-0400
Fax: (440) 248-6168
www.keithley.com
Introduction
WARNING
Connection and wiring procedures contained in this User’s Guide are intended for use
by qualified service personnel only. Do not perform these procedures unless qualified to
do so. Failure to recognize and observe normal safety precautions could result in
personal injury or death.
This document contains information specific to the Models 7700, 7702, and 7703 multiplexer modules. These modules can be
used in the following Model 27xx DMM mainframes:
• 7700 Module – This module can be used in Model 2700, 2701, and 2750 mainframes.
• 7702 Module – This module can be used in Model 2700, 2701, 2750, and 2790 mainframes.
• 7703 Module – This module can be used in Model 2700, 2701, and 2750 mainframes.
All references to the Model 27xx apply to the Models 2700, 2701, and 2750.
If you have any questions after reviewing this information, please contact your local Keithley representative or call our
Applications Engineers at 1-888-KEITHLEY (1-888-543-5483, U.S. only) or Telefax: 440-498-2990 (Instrument Products).
WARNING
Before operating the Model 27xx with an accessory card, verify that the card is properly
installed and the mounting screws are tightly fastened. If the mounting screws are not
properly connected, an electrical shock hazard may be present.
Operation
Model 7700
Operation of the Model 7700 module is covered in Section 2 of the Models 2700, 2701, and 2750 User’s
Manuals.
Model 7702
Except for the number of available switching channels and channel number designations, operation of the
Model 7702 is the same as operation for the Model 7700. Model 7700 operation is covered in Section 2 of the
Models 2700, 2701, and 2750 User’s Manuals. Model 7702 operation is also covered in Section 2 of the
Model 2790 Reference Manual and Section 3 of the Model 2790 User’s Manual. Channel number designations
for the Model 7702 is provided in the schematic provided at the beginning of this user’s guide.
Model 770
3 This module is also similar to the Model 7700. Differences include the number of available channels and the
Model 7703 does support amps measurements. Model 7700 operation is covered in Section 2 of the
Models 2700, 2701, and 2750 User’s Manuals. Channel number designations for the Model 7703 are provided
at the end of this User’s Guide.
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