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External Devices (EXD)

Optional Module for the KLIPPEL QC Framework

Features and Benefits

  • Integrate 3rd party instruments (control and measurement)
  • Extend capabilities of QC System
  • Handle complex tests
  • Full GPIB support (IEEE 488.2)
  • Apply limits to acquired data
  • Bluetooth® and sound device control: pairing, profile and volume control

The QC External Devices task is a versatile add-on for the QC framework of the KLIPPEL Analyzer System dedicated to interfacing with arbitrary GPIB (IEEE 488) compliant measurement equipment, such as multimeters or power supplies. Simple programmable step sequences enable the user to control 3rd party instruments and to include the measured data in the QC test (EXD Pro). Test limits can be applied to generate PASS/FAIL verdicts. In addition to GPIB support, many other interfaces provide simple solutions for test automation and control.

EXD Bluetooth is a limited version of the EXD dedicated to pairing and control of Bluetooth enabled devices with simplified user interface in Preset Mode.



Full version with custom sequence or

EXD Bluetooth 
Preset mode, included in MegaSig U980 Set 


Handset Electronics and Acoustic Test

The figure shows an example test scenario for a handset test including electronics and acoustics. The DUT supply voltage is provided by a programmable power supply with GPIB interface controlled by the EXDtask. A digital multimeter is used to test DC current and resistance of the handset electronics. The EXD sequence triggers the measurement and checks the results against limits using to generate PASS/FAIL verdicts. All of this is combined with an acoustical test of the receiver and microphone using the KLIPPEL Analyzer 3 and QC Sound Pressure (SPL) task.


Bluetooth Devices Test (Pairing & Audio Control)

For test automation of Bluetooth-enabled speakers and headphones, the EXD enhances any QC test sequence with Bluetooth pairing and audio control through the MegaSig U980 analog Bluetooth interface.

At the beginning of the test sequence, the EXD triggers scanning of the DUT address for pairing or the next available device is paired. The A2DP audio profile is activated to test the speaker output using a test microphone connected to the KA3. In the next step, the HFP (hands-free) profile is activated for testing the DUT’s microphone response. The reference speaker is connected to the output of the analyzer to play back the test signal.

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