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Modulation Domain and Time Interval Analyzers Pulse Analyzer System (PAS)

Technical Overviews

Introduction

The Keysight Technologies, Inc. PAS, pulse analyzer system provides precise, fast and efficient frequency and time interval analysis measurements for your RADAR Systems. Pulsed RF signal parameters are easily viewed and analyzed providing a comprehensive view of your RADAR system operation. See precise measurements, statistics, and histograms for RF pulse width and pulse repetition interval over time, clearly showing the timing accuracy and mode changes in your system.

Extreme measurement

efficiency

The advantages are clear when performing time interval analysis based on zero dead time, time-to-data-con­verter (TDC) technology. Extreme efficiency in memory use and data transfer can be achieved by eliminating the dead time when measuring pulsed RF signals. By storing only the precise times for rising and falling edges of the RF pulse, the PAS makes optimal use of the 4M event memory in the Keysight TDC. The dual memory architecture of this TDC supports unrestricted time capture length at rates as high as 1M events per second. Extreme accuracy and time resolution of 50 ps is achieved independent of time record length. The PAS system provides a wide bandwidth, 2 channel RF input reference module (IRM) with built-in detectors and an ultra low noise/low jitter 10 MHz reference oscillator. This IRM combines all of the necessary signal routing, TDC clock and 10 MHz reference outputs. These features along with the flexible internal and external triggering functions allow you to synchronize the PAS and other measurement instruments with your RADAR system operation.

Time interval analysis using the Keysight pulse analyzer system

For applications focused on time interval analysis of RADAR signals, use the PAS system to make measurements such as:

  • RF pulse width (PW) versus time
  • RF pulse repetition interval (PRI or PRF) versus time
  • PW and PRI histograms and statistics (min/max, mean, std deviation)
  • Raw time interval data and frequency versus time data
  • Flexible internal and external triggering functions
  • Markers and zooming features

Add the 4-channel digitizer for up to 8 GS/sec sampling with 10-bit resolution

The digitizer option includes a 4-channel digitizer with 2 of the channels available as direct inputs and 2 channels connected through the IRM in parallel to the TDC for simultaneous operation in both measurement modes. Capture and store digitized samples (to a file) for off-line analysis or for direct control via the 89601A VSA software. This enables measurements such as:

  • Detected pulse envelope vs time
  • Pulse power measurements
  • Measure RF power (peak and average) of an input pulsed RF signal

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