Programming and parameterization

Up to four units under test are programmed simultaneously and provided with user-specific data. Fully automated programming of up to four units under test Parallel or separate programming in three modules per unit under test Programming time of approximately 30 seconds for four circuit boards Programming Wi-Fi IDs and passwords

RF and frequency testing

Wi-Fi and ZigBee signals are tested and calibrated without contact in a shielded RF environment. RF measurement inside a shielded RF hood Contactless frequency testing using an antenna Frequency calibration using a spectrum analyzer Testing Wi-Fi and ZigBee signals

Communication and signal testing

Communication and electrical operating parameters are monitored during the test sequence. Functional test via Raspberry Pi and CAN interface Voltage tests Signal tests Ensuring stable operating parameters

Process control and safety

Software-supported process guidance and protective mechanisms reduce operating errors and incorrect process steps. Continuous monitoring via the MCD TestManager Database-supported process control Reverse-polarity and operating-error protection LED status display and integrated emergency stop switches

FCT Systems

Smart home systems

MCD Elektronik developed a programming and test station for smart home applications

The systems test and program Wi-Fi and ZigBee circuit boards efficiently, reliably and fully automatically – including frequency calibration, functional testing and database integration for maximum process reliability in series production.

Challenges and concept

Smart home systems require reliable communication between the heating system, mobile devices and manufacturer services. The electronic assemblies transmit data via Wi-Fi and ZigBee while also communicating with the heating controller via CAN. They must therefore be precisely programmed, calibrated and tested.

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Blinker, Kamera, Heizung und Assistenzsysteme.

FCT Systems

Außenspiegel

Smart home systems

Automated programming and test station for smart home assemblies

MCD Elektronik developed an automated programming and test station for smart home components featuring Wi-Fi and ZigBee technology. The assemblies are programmed, calibrated and tested, with particular emphasis on frequency calibration and secure data communication.

Shielded RF measurement technology, MCD TestManager and database integration create reproducible test conditions. Fixtures, visual user guidance and label printing support a safe series-production process.

Parallel programming

Up to 4 units under test

Programming time

Approx. 30 s for 4 circuit boards

Total test time

Less than 1 min

Test and functional scope

The functional test station handles programming, RF testing, communication testing and process control of the smart home assemblies within an automated production sequence:

Programming and test station for smart home assemblies

Overall view of the test station

Test adapter, RF hood and operator monitor

RF measurement technology of the test station

Detailed view of the measurement technology

Spectrum analyzer and system control

Test fixture for multiple smart home assemblies

Detailed view of the test station

Multiple fixture, contacting and operator monitor

Up to four units under test are programmed simultaneously and provided with user-specific data.

Fully automated programming of up to four units under test
Parallel or separate programming in three modules per unit under test
Programming time of approximately 30 seconds for four circuit boards
Programming Wi-Fi IDs and passwords

Wi-Fi and ZigBee signals are tested and calibrated without contact in a shielded RF environment.

RF measurement inside a shielded RF hood
Contactless frequency testing using an antenna
Frequency calibration using a spectrum analyzer
Testing Wi-Fi and ZigBee signals

Communication and electrical operating parameters are monitored during the test sequence.

Functional test via Raspberry Pi and CAN interface
Voltage tests
Signal tests
Ensuring stable operating parameters

Software-supported process guidance and protective mechanisms reduce operating errors and incorrect process steps.

Continuous monitoring via the MCD TestManager
Database-supported process control
Reverse-polarity and operating-error protection
LED status display and integrated emergency stop switches

Efficient series-production process with automatic labeling

Automatic QR and barcode label printing supports rapid commissioning. Optimized test sequences enable an overall test time of less than one minute, combining extensive test coverage with short cycle times.

Test methods used and challenges

The station combines RF measurements, spectrum analysis, communication tests, and voltage and signal monitoring. The main challenges are stable wireless measurements, different wireless standards and coordinated hardware and software integration.

RF and frequency measurements

Evaluation of Wi-Fi and ZigBee signals

Contactless frequency testing inside the RF hood

Frequency calibration using spectrum analysis

Communication and functional testing

Functional testing via Raspberry Pi

Communication via CAN interface

Voltage and signal monitoring during the test sequence

Programming and process control

Automated processing of customer-specific programming data

Sequence control via the MCD TestManager

Database-supported control of programmed assemblies

Process and measurement challenges

Stable and interference-free measurement of high-frequency signals

Safe processing of different wireless standards

Coordination of hardware, test software and database

Extensive test coverage with short cycle times and high process reliability

FREQUENTLY ASKED QUESTIONS

FAQS

The test station is designed for circuit boards used in smart home applications, particularly assemblies featuring Wi-Fi and ZigBee communication as well as an additional CAN connection. These are used, for example, in modern heating and home automation systems to inform users via communication with mobile devices about performance, status and faults.

The functional test system programs device parameters and access data, performs functional communication tests, RF measurements, and voltage and signal tests. The RF-shielded test environment enables Wi-Fi and ZigBee signals as well as wireless behavior and communication logic to be measured, analyzed and calibrated without interference.

The station enables up to four assemblies to be programmed and tested simultaneously, significantly increasing series-production efficiency. A complete cycle for four circuit boards takes only approximately 30 seconds, as specified by the customer.

This ensures that the correct software and parameters are first transferred to the circuit boards and that only correctly prepared units under test proceed to functional testing. Both systems are linked through a database, preventing incorrectly or incompletely flashed circuit boards from undergoing further testing.

The system incorporates the central TestManager CE software solution as well as numerous MCD tool monitors and control units for the test sequences. These include switchable USB hubs. The test adapter receives all stimuli exclusively through a main connector, which structures the contacting process and makes the test setup reproducible.

KEY FACTS

Key facts at a glance

Test system

Functional test system / Automated test system

Handling

Semi-automatic / automated

Concept

Multi-unit test stand with multiple fixtures – up to 4 circuit boards in parallel, consisting of a programming station and functional tester

Test methods & test scope

Electrical: Voltage measurements
RF / frequency: RF and frequency signals for Wi-Fi and ZigBee
Communication: Wi-Fi, ZigBee, CAN and
Raspberry Pi communication
Programming: Programming user-specific data such as Wi-Fi ID and password

Components

TestManager CE, DataManager tool monitor, Serialline tool monitor, MIO1616, USB Hub 2.0, spectrum/signal analyzer, Raspberry Pi, RF hood