(Cleveland, Ohio)- Keithley Instruments, Inc. has announced the release of SignalMeister™ Waveform Creation Software for Keithley's 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.
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 can quickly and easily produce virtually any TD-SCDMA signal. Waveform files generated with SignalMeister integrate seamlessly with Keithley's Model 2910 RF Vector Signal Generator.
SignalMeister TD-SCDMA waveform signals generated using the Model 2910 have a signal modulation quality characteristic EVM of 0.3%. Absolute amplitude accuracy is typically <+0.3dB to -110dBm (CW), relative accuracy (linearity) is <+0.05dB, and repeatability is <+0.05dB.
TD-SCDMA devices require testing at different frequencies and amplitudes, which the Model 2910 does in just over one millisecond with its patent-pending synthesizer design and List Mode. In addition, TD-SCDMA devices are commonly tested with multiple signal waveforms which must be switched quickly. The Model 2910 can store multiple TD-SCDMA waveforms, along with waveforms from other technology standards, in its 40MHz bandwidth, 100 Mega-sample ARB memory. It can switch between waveforms instantly, in one sample period, using the ARB Sequence feature or in less than three milliseconds using a SCPI command via any of the instrument's GPIB, USB, or LAN interfaces, which includes LXI Class 3 operation.
The SignalMeister TD-SCDMA software generates waveforms that conform to the ETSI 3GPP-TDD standard and defines 11 physical and three transport channels for both Uplink and Downlink signals. The SignalMeister software can also produce a TD-SCDMA signal that goes outside the standard, giving test engineers the ability to push parameter values beyond the standard in order to stress devices and ensure very high product quality.
:: Design World ::
Filed Under: Wireless, Test + measurement • test equipment