Exploring LCD Inverter Test System

LCD Inverter Test System

Chroma 8490

This auto test system uses the unique test command optimization technology to prevent the repeating control commands from sending to the system hardware devices

The Chroma LCD Inverter Auto Test System model 8490 is the ultimate solution for LCD inverters. It not only test traditional DC to AC inverters but also the LIPS (LCD Integrated Power Supply) type that combines adapter and inverter in one board.

To meet the different inverter test requirements, Chroma LCD Inverter Auto Test System model 8490 has off-the-shelf test items built in. Users may create new test items based on new test requirements using the test item editing function, which gives users the capability to expand the test items unlimitedly.

  • For both inverter & LIPS testing
  • Standard & probe pin test fixture selectable
  • High test throughput by system default test items
  • Cost effective
  • Synchronized measurement in multi-channel reduce the test time
  • Expandable PCI interface card: - Measurement Card - Control Card - DMM Card
  • Three brightness control modes: - DC Voltage, PWM, and SM Bus control
  • Three lamp current balance check
  • Waveform check function
  • Built-in timing measurement
  • Compensation function to correlate the error caused by fixture
  • Transformer DCR measurement
  • Burst mode frequency & duty measurement
  • Open architecture software:
  • Other hardware expandable upon request
  • Windows 98/2000/NT/XP based software

The comprehensive test items covers 5 categories of traditional DC to AC inverter testing requirements. “Output Performance” checks the general performances of the UUT. “Input Characteristic” verifies the input parameters of a inverter. “Timing Tests” measures the turn-on, turn-off or when events occurred. “Protection Tests” triggers the protection circuit of the power supply. Finally, the “Special Tests” provides means to test the most sophisticate inverter which need unique test solutions.

For the D/A Inverter testing requirements. The comprehensive test items as below:


Output Performances
  • Lamp current
  • Lamp voltage
  • Lamp frequency
  • Kickoff (Vopen) voltage
  • Efficiency
Input Characteristics
  • Input voltage
  • Input current
  • Inrush current
  • DIM frequency
  • DCR
Regulation Tests
  • Kickoff (Vopen, shut down) delay time
  • Voltage turn on time
  • Current turn on time
  • Voltage turn off time
  • Current turn off time
  • Voltage rise time
  • Current rise time
  • Voltage fall time
  • Current fall time
Protection Tests
  • Short circuit test
  • Open circuit test
Special Tests
  • Burst Mode frequency & duty measurement
  • Lamp current balance
  • Waveform unbalance rate check
  • Waveform wave height check

ModelDescription
8490LCD Inverter / Ballast Test System
8491LED Power Driver ATS

More Features

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