Repair Case: Agilent E4428C Signal Generator
Recently, a customer reported an issue with their Agilent E4428C signal generator, which was displaying error codes and abnormal behavior. After a detailed consultation, the customer sent the device to us for repair. Below is an overview of the issue and repair process.
1. Device Model
Agilent Signal Generator E4428C
2. Fault Description
Error codes: 210.256.315.514, along with phase noise discrepancies and an "UNLEVEL" error message.
3. Inspection and Fault Diagnosis
Based on the customer’s description, our engineer performed a thorough inspection. Upon opening the device, it was found that the source module was severely damaged, resulting in abnormal output and operational issues.
4. Repair and Solution
Once the fault was confirmed, the engineer replaced the damaged source module and proceeded with a complete calibration and testing of the device.
5. Repair Outcome
All faults were fully resolved, and all performance metrics returned to normal, successfully restoring the device.
Agilent Signal Generator Models Supported by Lixun Maintenance
Lixun Maintenance provides repair services for a wide range of Agilent signal generator models, including:
N5100 Series, E8000 Series, 33000 Series, 81000 Series, M8100 Series, N4900 Series, N6000 Series, M9000 Series, 836XX Series, 837XX Series, 8600XX Series, 835XX Series, N51XX Series, E82XX Series, E44XX Series, and others.
Common Issues We Repair
Power Issues: Failure to power on;
Output Problems: Impedance irregularities, no signal, abnormal signal amplitude;
Display Problems: Screen distortion or blank screen;
Button Issues: Unresponsive buttons or knobs;
Interface Issues: Failure to recognize storage media or connect to control systems;
Other operational issues.
Other Instrument Types We Service
In addition to signal generators, Lixun Maintenance services a wide range of precision instruments, including oscilloscopes, spectrum analyzers, network analyzers, data loggers, digital multimeters, power supplies, electronic loads, and thermal imagers.
Since its founding, Lixun Maintenance has been committed to providing expert services for electronic test instruments across laboratories, research institutions, and universities. With advanced diagnostic equipment, skilled technicians, competitive pricing, and a reliable after-sales support system, we help our clients reduce repair costs and minimize turnaround times.
