TROUBLESHOOTING

TROUBLESHOOTING

TABLES

Table 5-4.Malfunctions Not Displaying an Error Message (1 of 6)

Signal Generator Will Not Turn On

(OPERATE light is OFF)

Normal Operation: When the 682XXB/683XXB is connected to the power source, the OPERATE light should illuminate and the instru- ment should power up.

Step 1. Disconnect the 682XXB/683XXB from the power source, then check the line fuse on the rear panel.

qIf the line fuse is good, go to step 2.

If the line fuse is defective, replace but do not apply power. Go to step 2.

Step 2. Remove the 682XXB/683XXB top cover and the safety cover located over the A21 Line Filter/Rectifier PCB assembly that is located on the rear panel.

Step 3. Disconnect the cable at connector A21P2.

Step 4. Connect a digital multimeter (DMM) across the pins 1 and 2 of A21P2, then connect the 682XXB/683XXB to the power source. Check for a 330 volt reading on the DMM.

qIf the voltage is correct, go to step 5.

If the voltage is incorrect or the line fuse blows, replace the A21 PCB.

Step 5. Disconnect the 682XXB/683XXB from the power source and allow 5 minutes for the capacitors on the A21 PCB to dis- charge.

Step 6. Reconnect the cable at A21 P2, then remove the cover over the A18 and A19 PCBs.

Step 7. After connecting the negative lead of the DMM to A19TP3 and the positive lead to A19TP2, connect the 682XXB/ 683XXB to the power source and check for a +28 ￿2 volt reading on the DMM.

qIf the voltage is correct, go to step 8.

If the voltage is incorrect or the line fuse blows, replace the A19 PCB.

Step 8. Connect the negative lead of the DMM to A15TP1 and the positive lead to A15TP14, check for a +23.33 ￿0.5 volts read- ing on the DMM.

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682XXB/683XXB MM

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Anritsu 682XXB, 683XXB manual Troubleshooting Tables, Signal Generator Will Not Turn On Operate light is OFF

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.