Chroma 1871B is an automatic test system specifically designed for bias current testing of chip-type inductors. In response to the strict safety standards of the global automotive market, it offers a comprehensive test solution for functions and specifications of electronic components used in automotive products.

The Chroma 1871B bias current test system primarily focuses on quality testing of chip inductors. When the inductor's production line testing process includes a bias current test, the inductor will be unable to return to its zero point due to the momentary changes in the B-H magnetic area, which are caused by remanence. This will briefly affect the inductor's Ls/Q value, which will generally recover after tapping, resting at a high temperature or resting for an extended period of time. Therefore, if the bias current test capability is integrated into the inductor test and packaging machinery and is routinely performed, the Ls/Q value gets insufficient rest time after excitation from the bias current test, which in turn can cause production issues. This means that a test setup which combines a bias current test and an Ls/Q test into one automatic test and packaging machine is unsuitable for certain inductors. Thus, it is necessary to dedicate an independent machine toward testing the bias current specifications.

Chroma 1871B has a maximum production efficiency of 1,200 units per minute. It can perform tests using five bias current test stations at a time, meeting the demands of fast and high-capacity mass production. Another option is to match just two bias current test stations and perform additional pre-testing specifically for products with bias current test requirements. This enables meeting specific testing requirements with less equipment, providing a cost-effective solution for smaller production volumes.

Chroma 1871B uses a vibratory bowl feeder to transport small parts at high speeds, which is faster and saves more space than conventional linear reciprocating feeders. Furthermore, Chroma 1871B's test area is designed with closed indexing table architecture to avoid spilling of parts at high speeds, in addition to being more stable and faster than traditional designs.

Chroma 1871B features dedicated software that monitors test status in real time during production and collects and saves test data for each individual product. This realtime monitoring function helps to reduce production risks and unnecessary man-hours. The data collection function can assist R&D and quality assurance units in product analysis or quality control. The software can also perform data analysis, leading to improved quality and increased profits.

Chroma has more than 30 years of experience in the field of precision testing instruments. Not only do we specialize in precision electronics testing technology, we can also tailor the fixtures used in automatic test systems to your needs, completing and perfecting your automation equipment.

The Chroma 11050 Series HF LCR Meter is a precision test instrument designed to accurately measure and evaluate passive components at high speeds. With frequency ranges of 1kHz~10MHz, 60Hz~5MHz and 75kHz~30MHz, the instrument is suitable for analyzing component characteristics at a wide range of testing frequencies. 0.1% basic measurement accuracy ensures stable and highly reliable results. In addition, the fast 7ms measurement speed substantially increases productivity when operating in an automated environment.

The compatible Chroma A110505 DC Bias Current Source needs to be controlled via the 11050 Series HF LCR Meter to adjust the current output. It can deliver a bias current of 0~20A at a frequency of 100kHz~10MHz. When combining the HF LCR Meter with the DC Bias Current Source, the A110504 Bias Current Protection Box should be applied at the same time to prevent damage to the LCR Meter due to large voltages caused by transient current. Therefore, if you opt to use the A110505 DC Bias Current Source, we suggest also using the A110504 Bias Current Protection Box.

Chroma 1871B's data collection software A187100 is specifically designed for factory use. In addition to basic data collection, the software features real-time X-bar and R control charts and test parameter setup functions to fulfill the needs of R&D, production and QA units.

Test parameter setup, save and recall

Chroma 1871B can perform zero calibration of test fixtures with the A187100 software platform. Parameters and judgment conditions can be set on all instruments in the test setup at once without the need to operate them individually. Moreover, the test parameters can be saved to a PC and recalled swiftly to test different products.

Real-time test monitoring

The Chroma A187100 data collection software has a real-time monitoring function that includes number of inputs, good product count, defective product count, production yield, and good/defective statistics for each station. The additional X-bar and R charts real-time monitoring function assists production units in product quality control and checking for abnormalities.

Production report query and statistical analysis

The software can query the test data for basic information, production yield, and control charts. It can also analyze the test data from the queried control charts, automatically calculate control limits, and set the judgement conditions in the test monitoring function.