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Cellular test solutions leader drives the wireless future using XJTAG

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Cellular test solutions leader drives the wireless future using XJTAG
“ To maximise quality and shorten time to market for test equipment supporting the fast-evolving 3GPP-LTE
standards for IP-based mobile services, Signalion GmbH uses XJTAG for testing complex FPGA-based
boards. XJTAG’s powerful features, speed and ease of use are also helping the company focus more
resources on product development.
Dresden-based Signalion is a provider of prototyping, test,                     group to help develop dedicated test    support if we need help to generate
and live-demonstration equipment for the global mobile                          patterns to achieve adequate test       custom tests.”
communications industry. The company’s products include                         coverage,” adds Jens Weis. “XJTAG
complete test solutions for next-generation 3GPP-LTE                            is a much better solution, because it      XJTAG testers are also in action
wireless infrastructures, which enable leading equipment                        allows us to generate programs          at Signalion’s assembly house,
manufacturers, network operators, test solution providers and                   more quickly and achieve higher test    testing production LTE boards using
R&D departments to test modules from the baseband                               coverage. It also frees engineers in    programs derived efficiently from the
functionality up to the radio interface.                                        our VHDL group to fulfil their main     tests used in development. “When
                                                                                role, which is to implement LTE         the boards are delivered back to us,
   Because leading-edge cellular         well as devices such as Ethernet       features for the test systems we        we use XJTAG as a final inspection
standards such as LTE evolve quickly     PHYs, are connected to the JTAG        deliver to our customers.”              tool to pinpoint any defects quickly”
and continuously, board designers        chain, which allows all the I/O pins                                           adds Jens Weis. “It has become an
tend to use large numbers of FPGAs       to be monitored using boundary            Jens Weis continues by               important part of our strategy to
to ensure the flexibility they need to   scan. In addition, XJTAG provides      explaining that the technical support   deliver the perfect solution to our
update hardware in response to           easy-to-use tools for simulating bus   behind XJTAG has been another           customers every time.”
changes. However, large numbers of       signals, which simplifies testing of   factor helping to speed up
FPGAs present difficult board-test       other devices that are connected to    development. “We have appreciated
challenges during development and        the FPGAs but not to the boundary      the fast response from XJTAG’s
in production. To maximise test          scan chain.                            engineers in situations where we
coverage for its FPGA-based boards,                                             have been missing the BSDL file to
Signalion is using XJTAG boundary           “Without XJTAG, we would have       compile a test for a device. We
scan during initial hardware bring-up    to use the resource of our VHDL        know, also, that we can rely on
when developing LTE test systems.

   “We started to use XJTAG to test
the connections to FPGAs in BGA
packages, but we are now also
using it to test SDRAM and FLASH
                                         opinion                                Jens Weis
                                                                                Head of Hardware
                                                                                and RF Development

                                          in “
memories, and to emulate bus                  XJTAG is highly effective for testing the connections to FPGAs             Company        Signalion
                                                                                                                                        HQ Germany
signals to extend test coverage to           BGA packages, and we are also using it to test SDRAM and                    Nature of      Provider of complete test solutions
many other devices such as A/D            FLASH memories, and emulate bus signals to extend test                         business       for wireless infrastructure
                                                                                                                                        manufacturers and operators
and D/A converters connected to the
                                          coverage to many other devices connected to the FPGAs.                         Main product   3GPP-LTE test solutions
FPGAs,” explains Jens Weis, Head
of Hardware and RF Development at
Signalion. “We can also read and             “ Without XJTAG we would have to use our VHDL group to
                                          develop dedicated test patterns, to achieve adequate coverage.
                                                                                                                         Customers      Wireless infrastructure
                                                                                                                                        manufacturers and operators,
                                                                                                                                        wireless test solution providers,
check many analogue signals on the        XJTAG provides a more effective solution, and also frees engineers                            R&D departments and institutions
board, and test Ethernet PHY chips.”                                                                                     Location       Dresden, Germany
                                          to continue improving our products. The system also comes with
                                                                                                                         Incorporated   2003
                                          high-quality technical support. XJTAG is an important part of our              Web site
  The FPGAs and associated
configuration-FLASH memories, as
                                          strategy to deliver the perfect solution to our customers.

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