Data Patterns (India) Pvt Ltd

Adyar, Chennai, Tamil Nadu

Industry Pack (IP) modules are international standards as per ANSI-VITA 4.
These are mezzanine modules of approximately the size of a business card (99mm x 45mm). Featuring a 16 or 32 bit wide I/O interface and 50 user defined I/O pins, these modules are ideal for providing the capability for high density I/O.
IP carriers provide multiple slots on a single carrier. This allows multiple IP modules to be provided on a single slot in a Compact PCI / VME / VXI / PCI card cage.
Industry Pack modules provide some unique advantages in system integration. These include:

• Utilisation of slot space, by providing multiple functions in a single slot
• Low cost implementation due to their small size
• The IP modules provide only the quantity of I/O required for the application
• Availability of many functions on IP form factor from multiple vendors
• Flexibility of routing to Front or Rear of card cage by suitable carrier selection
• Standard IP modules, in conjunction with custom rear I/O capabilities enable customisation at the lowest cost and maximum long term maintainability

A unique advantage of the IP concept is the ability to utilise IP modules in multiple hardware architectures. A typical high reliability project is implemented in Compact PCI or VME or VXI architectures. However, the project is likely to need hardware in advance to carry out simulation or software development and so on. In this case, The IP modules can be procured early, and utilised on low cost PC platforms. Subsequently, the projects can transfer the resources to the final platforms. Developed source code can be easily ported to the final environment.
The layout of the IP board enables mechanical ruggedisation to be easily achieved, enabling vibration and shock resistant applications to be met.
Data Patterns has implemented a range of functions on the IP form factor. These include communication modules, digital I/O modules, special functions such as pulse generation and sensing, resolver inputs and timing generation suited for the special signals found on ships. Some of these products are used in airborne as well as marine applications.
Further functions needed for applications can be developed by Data Patterns in very short time frames, where such a development is appropriate to project requirements.
The use of the IP modules, in conjunction with carriers in standard platforms such as Compact PCI, VXI, VME and PCI enables Data Patterns to implement projects flexibly and quickly.

A list of products is given below.

Power supplies of various ratings for Air, Naval ground based and space applications are developed. Products are implemented in VPX, VME, cPCI and custom form factor designs.
Most products qualified to requirements of MIL-STD-461C and MIL-STD-810D or the equivalent JSS 55555 are designed and manufactured. Airborne versions are designed to meet MIL-STD-704D. Specific design constraints are handled with respect to long time storage life and suitability for air cooled or conduction cooled applications. Designs suitable for high power supplies of various ratings for Air, Naval, Ground based and space applications are developed. Products are implemented in VPX, VME, cPCI and custom form factors designs.

Data Patterns has developed a line up of State of the Art Integrated solutions for spectrum monitoring, wideband searching, ECM & ESM, direction finding for Airborne and Ground Mobile Applications standard Products include VHF/UHF Search Receiver, HF Search Receiver, Monitoring Receiver & Jammers.

Data Patterns has standard communication products for most military protocols such as MIL-STD-1553B, ARINC-429, ARINC-708, RS422. A spread spectrum modem is available for both terrestrial and satellite communication requirements.
These products are designed primarily for on-board interfaces in avionic systems and also for automatic test equipment requirements.
The Communication modem products are primarily employed in datalink applications

Modules in compact PCI from Data Patterns are available for Data Acquisition and Control, Simulation, Communication Automatic test equipment, Rugged systems, Fail-safe systems, Computer controlled logic controls, Plant automation and similar requirements. Other I/O functions available from our IP and Mezzanine Module families can be directly integrated into our cPCI systems.
Data Patterns has also pioneered cPCI derivatives such as 9U High Voltage systems, Multiple backplane support with Hot Standby Switchover capabilities. Continuous innovation enables MMI options such as CRT & LCD displays, Keyboards, Pointing devices, Finger print security devices and so on.

A list of products is given below.

Data Patterns has developed the required expertise to design and maufacture BLDC Motor drivers used in close loop position control applications primarily for actuator control and Thrust vector nozzles and control surface (FINS) for missile and Torpedo applications. Multiaxis gimbals are developed for specific requirements.
These products are supported by test systems for electro Hydraulic and Electro mechanical actuator testing

Data Patterns has designed prototyped, qualified and manufactured a wide variety of products intended for airborne applications in manned and unmanned aircraft. Ranging from smaller unmanned vehicles and missiles to manned fighter aircraft, Data Patterns has the largest number of qualified LRUs designed in India from a single source. Incorporating the latest techniques from thermal engineering and mechanical ruggedisation, Data Patterns' products are ideally designed for the application. A captive manufacturing facility enables production with reliability. At the same time, planning and preparing for obsolescence management and providing long term support for manufacturability is the key philosophy with respect to the avionic product lines.

These products are implemented through modern high speed digitizers and digital to analog converters and are backed by FPGA based processing that implements baseband tuning and high speed I&Q vector generation algorithms. These find application in real-time signal processing, electronic waveform generation, digital tuners, and communication products.

VXI stands for VME eXtensions for Instrumentation. It is an open standard first developed by five leading Test and Measurement companies in 1987 to standardise a backplane capable of developing open, interchangeable instrument modules that could be used to build Automatic Test Equipment (ATE).
Data Patterns designs and markets a wide range of VXI modules, some of which are listed below. Due to the use of the latest technologies, Data Patterns VXI modules offer the highest I/O density available in the industry today.
Further enhancements of functional capabilities are achieved by the use of VXI IP carriers and VXI M Module carriers. This extends standard functions available from Data Patterns in these mezzanine architectures to the VXI platform.

Data Patterns' VXI modules are utilized in high reliability applications such as Count Down Checkout System for the First and Second Launch Pads at Satish Dhawan Space Centre SHAR operated by Indian Space Research Organisation (ISRO).

A list of products is given below.

Data Patterns has a strong RF and Microwave engineering capability, featuring a team of enthusiastic engineering talent, substantial investments in RF test and measuring instruments, and attitude to utilise the latest technologies.
An in-house manufacturing capability and an insatiable demand for fulfilling requirements of Radar, Electronic Warfare and Communication domains, Data Patterns has developed a whole line of building blocks including TR Modules, Up and Down Converters, Power Amplifiers, Transmitters, Combiners and Dividers for specific requirements. A list of products is given below.

Data Patterns has built high reliability Cable Harness Test Systems for large installations. These are primarily used in launch vehicle aircraft and missile level cable harness test validation. Installations with upto 20, 000 lines test capability at a single location have been supplied by Data Patterns. Portable version capable handling of as small as 384 points have also been addressed.

The system features scalability from 128 lines to over 30000 lines portable large systems.

It is implemented using :

• High Voltage Insulation Measurement Module
• High Voltage Matrix Switch
• High Voltage Relay Switch
• Precision Multimeter

It is configured with :

• Central Control Station
• Distributed Slave Stations

It measures :

• Continuity
• Wrong Connections
• Resistance
• Special Tests
• Diode Tests
• Relay / Manual Switch Assemblies control
• Shield
• Forced Current
• Isolation
• Insulation
• Cable capacitance

Redundant Strap down Inertial Navigation System (RESINS) checkout test station comprises of cPCI chassis with various functional I/O modules like ADC, DAC, DIO, VFC, Relay matrix, MIL 1553, GPIB, Serial communication interfaces and Custom Built System interface adaptor.

Software drivers for each functional block are developed in QNX, to perform functional checks of the integrated prime and redundant chains of the satellite launch vehicles Navigation system.

The following functional checks are performed for various On-board packages :

• NIMP (Navigational Inertial Module Prime)
• NIMR (Navigational Inertial Module Redundant)
• NGCP (Navigational Gyro control Processor Prime)
• NGCPR (Navigational Gyro control Processor Redundant)
• ISUPM (Inertial System Unit Prime Module)
• ISU (Inertial System Unit)
• REMP (Redundant Electronics Module Prime)
• REMR (Redundant Electronics Module Redundant)

The custom built Signal Interface Adapter (SIA) is used to provide :

• Power to various packages
• Power supply voltage monitoring
• Voltage monitoring at package end
• Current monitoring of package supply
• Line driving of VFC signals, RS232 and reset interface
• Status read back of on-board relays
• LED ON/OFF relay status
• Watch dog and surveillance enunciator
• Emergency OFF for COS supply
• Relay bypass control switch

• Solution to test redundant Architecture of BMU
• Comprehensive test system performing tests of > 3000 I/O's
• Special test circuits using hybrid / ceramic components to operate in Thermovac chamber
• Tests various subsystem functionalities like, AOCS, Sensor Electronics, Telemetry, Tele-command with Self test and application test software

Satellite Sub systems tested are:

• Digital Telemetry Interface
• 1553B Interface
• Bit Error Measurement Simulator
• Digital Remote Multiplexing Unit Interface
• Analog Remote Multiplexing Unit Interface
• Event Timer Interface
• Deployment Timer Interface
• Telemetry - Analog Interface
• Telemetry - Digital Interface
• Digital RF Bit Interface
• Telemetry Play Back Interface

A number of Naval products have been designed, qualified and delivered to Naval Shipyards including Garden Reach Shipbuilders & Engineers Ltd (GRSE) and Mazagon Dock Limited (MDL)
Some systems have been supplied to M/s. Bharat Electronics Limited. Some Oceonographic systems have been supplied for scientific research purposes.

Data Patterns offers a wide range of multi-function rugged LCD displays for rotary and fixed-wing aircraft. The current range extends from 3" to 20" units. All avionics displays offer leading edge functionality including on board smart processing and internal & external sensors support Video formats from RS170, Stanag 3350, PAL, VGA, DVI, ARINC 708, ARINC 818 standards are provided. The integration of the latest NVIS technologies and the optical stack-up allows for very high brightness, high contrast sunlight readable screens with minimized reflections, combined with low power consumption.

Display Technologies

• Custom High Brightness LED backlights and backlight drivers
• Optical lamination & NVIG compatibility of LCDs
• Custom designed Bezels
• Lightening Protection
• Overlaying of graphics symbology
• Conversion of STANAG 3350 class B/C, RS170, SoG.

NTSC/PAL RGBHV, DVI etc. to LCD compatible signals.

• Interfaces like ARINC 429, ARINC 708, RS422, MIL-1553B, and protocols such as AFDX, Ethernet, Fiber Channel, USB.
• Standby Instrumentation by integrating sensors such as Pressure, altitude etc.
• Design to standards such as MIL-STD-461, MIL-STD-810, DO-178B, DO-160F, DO-254
• CEMILAC qualified and flight approved on fighter aircraft, trainer aircraft and military helicopters, and DGCA qualified Cockpit displays.

The System is intended for acquisition of static strain data on large structures such as fuel tanks in launch vehicles and launch motor casings using a 24 bit Sigma Delta ADC and precision analog signals.

This product provides Micro strain level accuracy with extreme low drift and high temperature stability for a precision strain gauge measurement system engineered for large channel count applications.

Data Patterns has supplied thousands of strain gauge measurement channels for India's launch vehicle programs by using the cPCI architecture and providing compatibility with other data acquisition products.

This system can easily can accommodate displacement measurement transducers, temperature DAC and so on. Facilities for multi rack synchronization, time stamping, operation control, grapping and reporting tools simplify the operation of the system. A comprehensive built-in test enables validation of all wired sensors. This feature is very critical when large number of sensors are simultaneously being acquired.

Instrument Test Unit For Advanced Inertial Sensors (INTU) is used for testing and evaluation of Ring Laser Gyro (used in GSLV/PSLV launch vehicles), that detects the angular displacement during rotation. The INTU receives displacement signals from the sensor (RLG) to evaluate the sensor characteristics and also generates signals required towards initiating the action of the sensor.

This system contributes to the successful launch of many of India's rocket launch vehicles including the Polar and Geostationary Satellite Launches, the Chandrayan and the Mars Orbiter missions.

The INTU system consists of the following boards:

• Processor module
• INTU Interface Module
• Light-up module
• Current Monitoring module
• Rear I/O module
• Fan Failure Indication module

Data Patterns has standard software solutions for automation of test equipment application development (DP-CUTE) and for software development and debugging in multi processor environment (DP-CHRONO).
Specialized application software have been developed and implemented in mission critical aircraft displays, long endurance unattended data acquisition systems and various products for Radars, Electronic Warfare, Video Signal Processing and so on.