MSOs focus on serial buses
-- Test & Measurement World, 11/25/2008 11:52:00 AM
While high-speed gigabit serial buses steal the limelight, low-speed serial buses such as I2C, SPI, RS-232, CAN, and LIN are at work every day in embedded systems and between devices. The MSO2000 series of mixed-signal oscilloscopes from Tektronix can trigger on and decode these buses using their analog channels. They also provide 16 logic inputs for testing parallel buses and I/O lines.
Available in 100-MHz and 200-MHz models with two or four channels, the MSO2000 series brings features formerly available in higher-end MSOs. One such feature is WaveInspector, which lets you scan a captured waveform and zoom in on details. WaveInspector lets you “bookmark” points in a waveform for easy locating. It also tells you how many triggers occur in a 1-Msample captured waveform.
The MSO2000 adds FilterVu, a digital variable low-pass filter that lets you reduce unwanted noise from a signal. Reducing noise can reduce false triggers, especially when using edge triggering.
Serial-bus decode eliminates the need to manually count bits and find characters transmitted on the bus. As you expand a captured waveform to see individual bits, the MSO2000 will determine the bits and frame them for easier reading.
Prices: MSO2024 (4+16 channels, 200 MHz)—$5150; MSO2014 (4+16 channels, 100 MHz)—$4300; MSO2012 (2+16 channels, 100 MHz)—$3580.
Tektronix, www.tek.com/products/oscilloscopes/mso2000.
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