Keithley 7999-4, Instruction Manual, Page: 13 / 41

1-2 General Information
Introduction
This section contains general information about the Model 7999-4 Microwave SPDT switch.
The information is organized as follows:
• Feature overview
• Warranty information
• Manual addenda
• Safety symbols and terms
• Specifications
• Unpacking and inspection
• Connections
If you have any questions after reviewing this information, please contact your local
Keithley representative or call one of our Applications Engineers at 1-800-348-3735 (U.S. and
Canada only). Worldwide phone numbers are listed at the front of this manual.
Feature overview
The Model 7999-4 is a single channel Microwave SPDT switch with the following features:
• SMA connectors
• RS-232 relay control
• +12V DC power connections
• Operating range from DC to 18GHZ
Warranty information
Warranty information is located at the front of this instruction manual. Should your
Model 7999-4 require warranty service, contact the Keithley representative or authorized repair
facility in your area for further information. When returning the switch for repair, be sure to fill
out and include the service form at the back of this manual to provide the repair facility with
the necessary information.
Manual addenda
Any improvements or changes concerning the switch or manual will be explained in an
addendum included with the manual. Be sure to note these changes and incorporate them into
the manual.