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Nexjen System’s provides production test systems for wireless utility meters based on a system platform developed over 4 years and deployed in multiple manufacturing sites in the US and abroad.
Specifications
- The test systems are based on a core hardware platform from National Instruments that covers typical baseband and RF test cases with a small physical footprint and reduced cost over traditional rack and stack test equipment.
- Test software is based on a TestStand Executive that can be customized to meet client needs.
- UUT connectivity is provided via standard mass interconnect from Virginia Panel Corporation. Final board connections are made with customized production fixtures.
- Design Validation fixtures can accommodate a variety of interconnect options including UL style, pogo, and standard cable sets.
- Requirements:
- Capabilities for baseband and RF test cases. Custom RF protocols or modulation are often required.
- System must be expandable to meet changing UUT requirements and the addition of new test plans.
- System must be capable of testing multiple UTT’s with wide ranging fixture and interconnect differences.
- System should have a small footprint and be designed for deployment to a contract manufacturing environment.
- Ability to share code across design validation and production test is increasingly common.
- Test Executive software should interface into a SQL database or export results into a stand text file for import into an enterprise database.
- System hardware should be COTS equipment that easily calibrated by traditional vendors.
- Easy to support and control
Software
- Test Software Architecture:
- Custom TestStand Application – Test System Control: sequencing editor, operator interface, test sequencing, and report generation/data storage.
- Custom LabVIEW Application – Test Code and Interlocking: test cases, self-test, safety interlocks, data acquisition, instrument drivers, logs, alarm monitors.
- MAX: HW Diagnostics, Tasks, and calibration
- Test Stand Sensors/Controls
- Receiver / ITA’s
- UUT’s
- Typical Test Plan Functions: DC Measurements, AC Measurements, RF Power, modulation and spectrum, receiver sensitivity, meter simulation, load emulation, Mag-Swipe, Serial/LAN Comms, Thermal Chambers, device programming, switching, barcode scanning, reporting, DIO for control and stimulus, interlocking, label printing, and operator access control.
Hardware
- Test Platform Hardware Architecture
- PXI Data Acquisition & Control System (VSA Module, Switch Module, DC Source, DAQ Module, DIO Module, Serial Module, DMM Module, MUX Module, Scope Module)
- Agilent 35V, 3A Two Chain DC Supply
- Flasher
- Virginia Panel G12 Receiver
- ITA and Fixture Pan
- Fixture Clamp