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

8490 Model LCD Inverter ATS

• 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

Comprehensive Test Items

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 1. Lamp current 2. Lamp voltage 3. Lamp frequency 4. Kickoff(Vopen) voltage 5. Efficiency Input Characteristics 6. Input voltage 7. Input current 8. Inrush current 9. DIM frequency 10. DCR

Regulation Tests 11. Kickoff (Vopen, shut down) delay time 12. Voltage turn on time 13. Current turn on time 14. Voltage turn off time 15. Current turn off time 16. Voltage rise time 17. Current rise time 18. Voltage fall time 19. Current fall time

Protection Tests 20. Short circuit test 21. Open circuit test Special Tests 22. Burst Mode frequency & duty measurement 23. Lamp current balance 24. Waveform unbalance rate check 25. Waveform wave height check

8491 LED Power Driver ATS

1. DC Electronic Load: Chroma 6310A/6330A Series
2. Time/Noise Analyzer: Chroma 6011/80611 + 80611N
3. DC source: Chroma 62000P Series
4. Digital Power Meter/Analyzer: Chroma 6630/66200 Series
5. Sytem Controller*1: Industrial PC
6. OVP/Short circuit tester: Chroma 6012/80612
7. ON/OFF Controller: Chroma 6013/80613
8. AC Source: Chroma 6500/61500/61600 Series
9. Transducer Uint*2: Chroma A849101

*1 : The controller includes both Measurement Card and Control Card to provide BL control signal (DC level, PWM, SM bus), and Enable ON/OFF signal.
*2 : Requires Measurement Card to measure Dimming Current/ Frequency/ Duty, and Timing / Noise Card to measure Ripple Current (@20MHz)

Optimized Test Items

The Chroma 8491 ATS is equipped with optimized standard test items for LED driver testing (lighting & TV backlight). The user is only required to define the test conditions and specifications for the standard test items to perform the test.

The optimized test items cover 6 types of power supply test requirements. "Output Performances" verifies the output characteristics of the UUT. "Input Characteristics" check the UUT input parameters. "Regulations" test the stability of UUT under varying line-in and loading changes. "Timing & Transient" test the timing and transient states during protection. "Protection Tests" trigger and test the protection circuit, the "Special Tests" provide means to test the most sophisticated UUT's when unique test routines are needed.

Output Performances 1. Output voltage 2. Output current 3. Ripple Current (RMS & p-p) 4. Dimming Current 5. Dimming Frenquency 6. Dimming Duty 7. Efficiency 8. In-test adjustment

Input Characteristics 9. Input Inrush Current 10. Input RMS Current 11. Input Peak Current 12. Input Power 13. Current Harmonics 14. Input Power Factor 15. Input Voltage Ramp 16. Input Freq.Ramp 17. AC Cycle Drop Out 18. PLD Simulation Regulation Tests 19. Current Regulation 20. Voltage Regulation 21. Total Regulation

Timing & Transient 22. Turn ON Time 23. Hold Up Time Protection Tests 24. Short Circuit 25. OV Protection 26. OL Protection 27. OP Protection Special Tests 28. GPIB Read/Write 29. RS232 Read/Write

Software Platform of ATS

The Model 8491 Test Systems include the industries most sophisticated power supply testing software platform, PowerPro III. PowerPro III provides users with an open software architecture suited for a wide range of applications and devices.

Power Pro III is a Windows 98/NT/2000/XP environment, which provides necessary computer peripherals.

Model	Description	Quote	Buy
8490	LCD Inverter / Ballast Test System		Call
8491	LED Power Driver ATS		Call