April/May, 2024
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www.xjtag.com Case Study
Page 101
photos: Saab
of debugging and testing multi-layer development boards destined for its IDAS and CIDAS projects used in electronic warfare systems.
Saab cuts costs and boosts productivity with XJTAG boundary scan “
Saab serves the global market with world-leading solutions, products and services ranging from military defence to civil security. With operations and employees on every continent, Saab continuously develops, adapts and improves new technology to meet customers’ changing needs. Saab operates in five business areas: Aeronautics, Dynamics, Electronic Defence Systems, Security and Defence Solutions, and Support and Services.
” The versatility of the XJTAG system
made it an attractive choice for world- leading defence and security specialist Saab, which needed a reliable test solution to test multi-layer development boards destined for airborne and naval electronic warfare systems used in its IDAS and CIDAS products.
“We have initially used XJTAG in
the production environment to test our complex, high density, multi- layered board designs containing FPGAs and CPLDs, and have recently introduced the solution to the development and debug stage with great success,” says Eduard Stander, who works for the Controllers Group at Saab’s Electronic Defence Systems, South Africa.
“Using XJAnalyser has allowed us
to reduce initial debug issues, and to debug errors in a shorter time than our existing tools allowed us.”
“We have found that using the
XJTAG solution, and the Layout Viewer in particular, has quantifiably reduced the cost of developing product test jigs in our production test department, because of the fast and accurate diagnosis the system provides.”
Advertorial See at IPC APEX, Booth 439 “We now can test products that
have processors, SDRAM and FLASH memories, Ethernet PHYs, A/D Converters, real time clocks, serial ports, voltage regulators.”
The team at Saab opted for
XJTAG because of its superior cost- to-performance ratio and, like many of XJTAG’s customers, they were particularly impressed with the flexibility of the system.
XJTAG makes it easy to write test routines for devices and allows users
opinion
test our complex, high density, multi-layered board designs containing FPGAs and CPLDs, and have recently introduced the solution to the development and debug stage with great success.
“We have initially used XJTAG in the production environment to ” ”
to store them in a library so they can be reused again when the same, or asimilar component,is used.
The XJTAG Professional System
provides an extensive library of reusable scripts while XJEase, XJTAG’s high-level test description language, allows engineers to write and customise tests for JTAG and non-JTAG components without needing to understand how boundary scan works. These tests can be re-used throughout the product lifecycle as well as in subsequent projects wherever the same component is used.
“The reuse of tests on the XJTAG system is a big time saver,” says Eduard. “The design for test (DFT) reports help us ensure that a very high percentage of our circuits are testable
Eduard Stander Controllers Group Saab
The design for test (DFT) reports help us ensure that a very high percentage of our circuits are testable before we go into serial production and, with the aid of boundary scan tests, we get closer to our goal of 100% test coverage on production Shop Replaceable Units (SRU).
“The reuse of tests on the XJTAG system is a big time saver.
He adds: “XJTAG’s high-level test description language XJEase is central to this flexibility. The ability to design low level test with XJEase is a real advantage as the test scripts let you drive the non-JTAG components directly.”
Eduard says the company’s next
step is to integrate XJTAG’s portable boundary scan oscilloscope product – XJTAG Expert – with its functional test equipment. “XJTAG is easy to use, highly effective and flexible enough to evolve with our test strategies as we focus on improving speed and productivity.”
Data Bank
Company Nature of
business Customers
Locations Employees Revenue
Web site
Saab HQ Sweden
Defense and security solutions
Global market with world-leading products, services and solutions from military defence to civil security
Operations on every continent 13,000
SEK 23,5 billion 20% related to R&D
www.saabgroup.com
www.xjtag.com
before we go into serial production and, with the aid of boundary scan tests, we get closer to our goal of 100% test coverage on production Shop Replaceable Units (SRU).”
Defence and Security company Saab selected the XJTAG development system to speed up the process
LDO 6 OSC0 9
VDD 23 OSC1
10 VDD 32
VDD 15 VDD 7
N 68MHz Clock
12 13
E
1K R24
IC8D 11 SN74LVC00ADBLE 35 3.68MHza
R34 100R R 470R R36 100R
LEDs 2
56pF C13
LEDC
150R R12
150R R13
150R R14
150R R15
GND +3.3v
D1 D2 D3 D4 TCK TRST
3.68MHzb 3.68MHzc
JTAG Chain Options JP2Header2
XilTDO TCK 1 2 1 2 1 2 CPUTDI
JP3Header2 R11
JP4Header 2 R10
JP5Header 2 R23
1 2 GND 820R 100R 1K +3.3v
NandGate LDO
1uF C2
3.68MHza
51R R22
GND
Pull Resistors
+3.3v A12 A11
GND +3
10K R2
10K R
10K R31
XilTDO R37 CPUTDO R38
LED1 LED2 LED3 LED4
TMS CPUTDI
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