REMOVAL AND

 

REPLACEMENT PROCEDURES

A21-1 PCB

6-12REMOVING AND

This paragraph provides instructions for removing and replacing the

REPLACING THE

A21-1 BNC/AUX I/O Connector PCB, which is located on the rear

A21-1 PCB

panel assembly (see Figure 6-4).

 

Preliminary

Disconnect the power cord from the unit. Remove

 

 

the chassis covers as described in paragraph 6-2.

 

 

Remove the rear panel assembly as described in

 

 

paragraph 6-10.

WARNING

When power is removed from the instrument, always allow five minutes for the capacitors on the A21 Line Filter/Recti- fier PCB to discharge before removing the A21-1 PCB.

Procedure Remove and replace the A21-1 PCB as follows:

Step 1 Using a Phillips screwdriver, remove the four screws that fasten the A21 shield to the A21 PCB.

Step 2 Remove the shield and set it aside.

Step 3 Disconnect the ribbon cable connector from the A21-1 PCB.

Step 4 Using a ANRITSU P/N T1451 tool, remove the dress nuts from the 12 rear panel BNC connectors.

Step 5 Carefully remove the A21-1 PCB from the rear panel assembly.

Step 6 To replace the PCB, reverse the removal process.

682XXB/683XXB MM

6-17

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Anritsu 683XXB, 682XXB manual A21-1 PCB, 12REMOVING
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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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