Cleveland, Ohio – August 20, 2007 - Keithley Instruments, Inc. (NYSE:KEI), a leader in solutions for emerging measurement needs, announces the release of SignalMeister™ Waveform Creation Software for Keithley’s award-winning line of RF vector signal generators. Keithley’s SignalMeister is a free PC-based software tool that creates arbitrary waveform (ARB) files that can be downloaded to Keithley’s Model 2910 RF Vector Signal Generator. SignalMeister is an expandable software platform with a common user interface that will allow integration of multiple signal creation libraries with flexibility to handle multiple signal standards as they become available. To learn more about Keithley’s SignalMeister software, visit The first signal generation library for the SignalMeister software supports the Chinese TD-SCDMA wireless communications standard, which is expected to be deployed soon in China. This TD-SCDMA library has the complete capability to produce virtually any TD-SCDMA signal quickly and easily. Waveform files generated with SignalMeister integrate seamlessly with Keithley’s Model 2910 RF Vector Signal Generator. The SignalMeister software now allows users to get all the time and cost saving benefits provided by the Model 2910 when calibrating and testing wireless equipment and devices employing the TD-SCDMA technology standard.