U4164A Logic Analyzer Module

Keysight U4164A Logic Analyzer Module

with Options up to 4 Gb/s State Mode and 10 GHz Timing Mode

Product Description

The Keysight Technologies, Inc. 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 the following unique capabilities that enable you to make measurements and achieve levels of insight unavailable with other logic analyzers:

–Quad sample state mode provides four samples with two different threshold settings from a single-touch connection to high-speed data signals under test 1

–Dual sample, dual threshold state mode

–Clock hysteresis allows the user to define a hysteresis range about the clock threshold

–10 GHz ¼ channel conventional and transitional timing mode 2

–Software tool for timing de-skew

–400 Mb (sample) memory depth option

–Four speed options corresponding to the state clock rate, data rate, and timing mode sample rates

Applications

–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

Features

–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

User values

–Confidence in state measurements with signal eye openings as small as 100 ps by 100 mV

–Rapidly view signal integrity information in a matter of minutes on all the buses in your design under a wide variety of operating conditions

–Quickly and easily set up complex DDR and LPDDR measurements

–350 MHz, 700 MHz, 1.4 GHz, and 2.5 GHz state speed options: Purchase the level of state speed capture capability you need now and upgrade as your state speed needs increase. The U4164A with the 2.5 GHz state speed option allows you to capture the highest speeds (up to 4 Gb/s) for DDR/LPDDR memory systems

–Dual-sample state mode: set separate sample positions and thresholds for DDR/LPDDR read/write captures for data rates less than 2500 Mb/s from one probe point

–Quad-sample state mode: set separate sample positions and thresholds for DDR/LPDDR read/write and rising/falling edge captures for data rates greater than 2500 Mb/s from one probe point

–Clock hysteresis: avoid false sampling on noisy clock inputs when differential clocks turn off

–10 GHz quarter channel conventional and transitional timing mode: Identify timing problems in deep traces with high sample resolution

–400 Mb (sample) memory depth option: Capture more system activity so you can debug complex problems when the symptom and root cause are widely separated in time

Quad-Sample State Mode

Quad-sample state mode enables four samples with two different threshold settings from a single-touch connection to high-speed data signals under test. This results in four unique sample positions at two unique thresholds. Single-touch connection preserves probe routing space and minimized probe load on high-speed digital systems. DDR4 and LPDDR4 probing for data rates over 2.5 Gb/s are examples of where single-touch probing enables high-speed trace capture using quad-sample mode to capture read and write DQ (data) at different thresholds with rising and falling edge samples for both read and write data to sample, trigger, and display DDR4 and LPDDR4 at data rates up to 4 Gb/s.

When operated in quad-sample state mode on all pods, the channel count is 34 channels for one U4164A, 68 channels for two U4164As, or 102 channels for three U4164A modules combined. Quad-sample state mode is only available with U4164A Option -02G. Quad-sample state mode can be selected on a per-pod-pair basis, so if you have only a subset of signals that require quad-sample mode, the channel count can be higher.

Clock hysteresis

The U4164A module has a unique clock hysteresis feature that allows the user to define a range about the clock threshold. Using clock hysteresis enables the U4164A clock input in state mode to avoid false sampling on noisy clock inputs that may float to zero volts at the differential clock input to the U4164A when the clock is turned off. Clock hysteresis improves state mode captures from systems where a differential clock input turns off and floats to zero volts.

Clock hysteresis control is inside the threshold dialog for the clock. The “hysteresis on” check box [x] is an on/off control. There is also an input for the amount of hysteresis setting in millivolts around threshold between 0 and 1 volts.

Harness your Logic Analyzer and Scope for Powerful Insight

Combine the powerful triggering and protocol analysis of a logic analyzer with the signal integrity insight of a scope to solve tough design problems. Keysight View Scope allows you to easily make time-correlated measurements between Keysight logic analyzers and oscilloscopes. The time-correlated logic analyzer and oscilloscope waveforms are integrated into a single logic analyzer waveform display for easy viewing and analysis. You can also trigger the oscilloscope from the logic analyzer (or vice versa), and automatically de-skew the two instruments. View Scope enables you to perform the following tasks more easily, quickly, and effectively:

–Validate signal integrity

–Track down problems caused by signal integrity

–Validate correct operation of A/D and D/A converters

–Validate correct logical and timing relationships between the analog and digital portions of a design