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Keysight Oscilloscope-based NFC Test Solution

Data Sheets

 Keysight’s low-cost near field communication (NFC) test solution consists of an InfiniiVision X-Series oscilloscope, Trueform waveform generator, programmable 3-in-1 NFC reference antenna (poller, listener, and resonant frequency coils), and PC-based NFC compliance test software that performs thorough analog testing of NFC-enable devices.

Introduction

Testing Near Field Communication (NFC) devices is essential during the design validation phase, as well as during manufacturing test to ensure quality and reliability of data transmission. This is especially important when you consider that the transferred/exchanged data between NFC-enabled devices is often secured financial transactions.

Keysight’s oscilloscope-based NFC compliance test software provides thorough physical layer analog quality testing with fast throughput. This software package is based on Keysight’s award-winning Infiniium oscilloscope conformance test software to provide a low-cost NFC pre-compliance analog test solution that includes a broad range of the most critical tests to ensure quality and reliability.

The PC-based software controls a Keysight Trueform waveform generator to produce reference test signals based on various NFC technologies, and then measures the response captured by a Keysight InfiniiVision X-Series oscilloscope with NFC triggering and real-time sampling up to 5 GSa/s.

Measurement results are then compared against published NFC analog specifications for pass/fail conditions. This software also provides complete report generation with statistical and margin analysis capabilities as shown in Figure 1.

Keysight’s NFC compliance test software guides you through the process of selecting and configuring tests, making oscilloscope connections, running tests, and evaluating the test results. This software:

  • Allows you to select individual or multiple tests to run
  • Shows you how to make connections to the test equipment and device under test (DUT) based on a selected connection type
  • Automatically checks for proper test equipment configuration
  • Automatically sets up the equipment for each test
  • Provides detailed information for each test that has been run and lets you specify the thresholds at which marginal or critical warnings appear
  • Creates a printable HTML report of the tests that have been run.

The complete Keysight automated NFC test system for manufacturing test and/or pre-conformance design validation consists of the following four components as shown in Figure 1.

  1. Keysight 3000T or 4000 X-Series InfiniiVision oscilloscope
  2. Keysight 33500 or 33600 Series Trueform arbitrary waveform generator
  3. Keysight N2116A/N2134A/N2135A 3-in-1 programmable NFC antenna (Poller, Listener, and Resonant Frequency test coils)
  4. Keysight D3000NFCB or D4000NFCB NFC compliance test application software.

NFC Test Coverage

Keysight’s NFC compliance test software provides higher-level functional pass/fail testing, as well as lower-level physical layer parametric analog testing. You can customize your specific test needs by selecting just the measurements required for your particular test environment. Table 1 shows the range of measurements that can be selected and performed.

Design Validation and Debug

Keysight’s InfiniiVision oscilloscope-based NFC test solution has several advantages over traditional NFC one-box testers. During the design phase of NFC-based products, an oscilloscope is a core test and debug instrument used by nearly all R&D hardware engineers. Although the NFC automated test software runs on an external PC, the software license resides in the scope. This is important because the license also enables special NFC hardware trigger modes in the scope. This means that you can use the scope in a standalone troubleshooting use-model to perform dynamic measurements with updated waveforms without running the automated compliance test software. The ability to trigger on NFC communication can be an invaluable R&D debug tool.

Before moving an NFC-based device into production, design verification based on published standards is important. Having an NFC test solution that can be quickly set up and provide automated test results in the R&D environment, and then transfer the same test methodology into the manufacturing test environment ensures consistency between all product development and manufacturing test phases.

And finally, when things go wrong on the production test floor, Keysight’s NFC compliance test software can be used on the repair line as well. If a specific test fails on the production line, such as Listener NFC-A load modulation amplitude (LMA), just that test can be selected to run on the repair line. When the test is complete, the scope is configured for that particular debugging condition. This enables the repair technician to quickly begin manual troubleshooting with the scope without having to manually set up the scope for complex test conditions as shown in Figure 3.

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