TROUBLESHOOTING

TROUBLESHOOTING

TABLES

Table 5-20.Error Messages 128, 129, 130, 131, 132, 133, 134, and 135 (4 of 8)

Error 129 Switched Filter or Level Detector Failed

Description: Error 129 indicates a failure of either the switched filter or level detector circuitry. The 682XXB/683XXB may or may not pro- duce an RF output in the 2 to 20 GHz frequency range. Thus, there are two troubleshooting paths for this problem—unleveled with output power and unleveled with no/low output power.

Unleveled with output power (The warning message UNLEVELED appears on the front panel display):

Step 1. Set up the 682XXB/683XXB as follows:

a.682XXB Setup: CW/SWEEP SELECT: Step F1: 0.010 GHz

F2: 20.000 GHz

Number of Steps: 400

L1: +1.00 dBm

683XXB Setup:

CW/SWEEP SELECT: Analog

F1: 0.010 GHz

F2: 20.000 GHz

Sweep Time: 0.100 Sec

L1: +1.00 dBm

b.LEVEL/ALC SELECT: ALC Mode

ALC Mode: Ext ALC Front

Leveling Menu: External Detector

Step 2. Connect a detector to the 682XXB/683XXB RF OUTPUT con- nector and connect the detected DC output of the detector to the front panel EXTERNAL ALC IN connector.

If the warning message UNLEVELED no longer appears

qon the front panel display, replace the directional coupler.

If the warning message UNLEVELED is still displayed, replace the A10 PCB.

5-44

682XXB/683XXB MM

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Anritsu 682XXB, 683XXB manual Error 129 Switched Filter or Level Detector Failed
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682XXB, 683XXB specifications

The Anritsu 683XXB and 682XXB series are advanced vector network analyzers (VNAs) renowned for their precision and versatility in characterizing RF and microwave components. Designed for engineers and technicians involved in the development, manufacturing, and testing of high-frequency devices, these analyzers offer state-of-the-art technology that ensures optimal performance in various applications.

One of the hallmark features of the Anritsu 683XXB and 682XXB is their high dynamic range, which allows for accurate measurements of small reflection and transmission coefficients, essential for assessing the performance of complex RF structures. With frequency coverage extending from DC to 70 GHz, these analyzers cater to a broad spectrum of applications, making them suitable for industries such as telecommunications, aerospace, and automotive.

The user-friendly interface of the Anritsu VNAs is complemented by a high-resolution display, which facilitates easy navigation through measurement setups and results. The analyzers feature multiple measurement modes, including S-parameter measurements, time-domain analysis, and noise figure measurements, providing engineers with comprehensive tools for device characterization.

Both the 683XXB and 682XXB implement advanced calibration techniques, including automated calibration and error correction methods, to enhance measurement accuracy. These methods significantly reduce the uncertainties associated with test setups, enabling reliable performance evaluations of components like filters, amplifiers, and antennas.

Anritsu’s proprietary technologies, such as the VectorStar and ShockLine series integration, further empower the 683XXB and 682XXB models. These technologies enable high-throughput testing and improved measurement stability, addressing the needs of modern production environments that demand rapid turnaround times without sacrificing precision.

Additionally, the analyzers come equipped with various connectivity options, including USB, LAN, and GPIB, ensuring seamless integration into automated test systems. This adaptability enhances the analyzers' utility in both laboratory settings and field operations.

In conclusion, the Anritsu 683XXB and 682XXB series vector network analyzers represent the pinnacle of RF and microwave testing technology. With their unmatched precision, comprehensive measurement capabilities, and advanced calibration techniques, these instruments are indispensable tools for professionals striving to push the boundaries of high-frequency device performance and reliability.
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