Design Con 2015

DesignCon: Tektronix 30 GHz probing system touts low noise, high bandwidth

January 28, 2013

Toni_McConnel-January 28, 2013

The new P7600 Series Probing System from Tektronix, Inc. features probe-specific DSP filters that enhance performance and minimize noise levels. When paired with the Tektronix DPO/DSA73304D oscilloscope, the P7600 Series Probing System provides connectivity and signal fidelity for high-speed differential signal measurements on serial bus designs like PCI Express.

The new P7600 Series includes two direct connect 2.92mm coaxial inputs, enabling conversion of an incoming differential signal pair to a single oscilloscope input channel. This enables up to 30 GHz differential measurement capability on all 4 DPO/DSA73304D oscilloscope channels. Efficient utilization of oscilloscope channels enables multi-lane serial bus acquisitions and/or simultaneous acquisition of high speed data alongside other system activity like 100 MHz reference clocks or chip-to-chip bus traffic like I2C. The P7600 Series also includes critical TriModeTM functionality that provides full support of differential measurements found in high-speed serial signals, along with independent single-ended and direct common mode measurements through the same probe connection. In addition, Tektronix also provides industry leading 30 GHz bandwidth for its solder-in connectors.


TriMode probing improves productivity by reducing setup time on standards tests for serial buses like PCI Express, Serial Attached SCSI and Thunderbolt that require both common-mode and differential signaling measurements. With TriMode, only one connection to the DUT is needed. Switching between differential mode [A-B], single-ended mode [A-Gnd, B-Gnd], and common mode [((A+B)/2)-Gnd] is accomplished through a single button press.

To provide a clean frequency response through the probing system, the new P7600 Series TriMode probing system utilizes probe-specific S parameter data. When connected to a DSA/DPO70000D Series Oscilloscope, the probe transfers this data to the instrument to create a specific DSP bandpass filter. Probe specific filters are critical as bandwidth increases, because at 30GHz even small variations in the signal path can lead to significant variations in frequency response.

For more information visit Tektronix at DesignCon this week.

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