The U4164A logic analyzer provides industry's highest data rate state mode (up to 4 Gb/s), highest deep trace timing mode (up to 10 GHz), and deepest memory (up to 400 Mb), enabling validation and debug of DDR4 or LPDDR4 at data rates over 3.5 Gb/s.

• State speed mode options up to 4 Gb/s
• Quad sample state mode provides four samples at two different thresholds from single probe point
• Clock hysteresis settings for state mode
• Full memory depth timing modes up to 10 GHz
• Up to 400 Mb memory depth options (400 Mb full channel timing, 800 Mb ½ channel timing, 1.6 Gb ¼ channel timing)
• De-skew interface for timing modes
• Eye scan technology with up to 5 ps x 5 mV scan increments
• 12.5 GHz, 256K deep timing zoom

The Keysight U4164A logic analyzer system combines reliable data capture with powerful analysis and validation tools to enable you to quickly and confidently validate and debug high-speed digital designs operating at speeds up to 4 Gb/s. The U4164A logic analyzer module delivers unique capabilities that enable you to make measurements and achieve levels of insight unavailable with other logic analyzers.

The U4164A logic analyzer module has two modes of operation: quad sample state mode and 10 GHz quarter channel timing mode. Quad sample state mode achieves four different sample positions at two independently adjusted thresholds from a single probe point on each input.

Quad sample state mode means less space is required to probe high data rate signals such as DDR4, DDR5, LPDDR4, and LPDDR5 that require different sample positions for read and write data and separate rising edge / falling edge samples for data rates greater than 2.5 Gb/s.

• Functional validation of memory systems and other high-speed digital systems operating up to 4 Gb/s
• Debug of hardware and software in high-speed digital systems operating up to 4 Gb/s
• Qualitative bus level signal integrity insight using eye scan or DDR eye scan

• State capture up to 4 Gb/s on 68 channels, 2.5 Gb/s on 136 channels per module
• Reliable data capture on eye openings as small as 100 ps by 100 mV
• 12.5 GHz timing zoom with 256 K sample memory
• Memory depth up to 400 M samples
• Wide variety of probing solutions including BGA, interposer, mid-bus, and flying leads
• Up to 10,880 channels in a system using Multiframe