REMOVAL AND

FRONT PANEL

REPLACEMENT PROCEDURES

ASSEMBLY

6-3REMOVING AND

This paragraph provides instructions for removing and replacing the

REPLACING THE FRONT

front panel assembly of the 682XXB/683XXB. The front panel assem-

PANEL ASSEMBLY

bly contains the A1 and A2 Front Panel PCBs. Refer to Figure 6-2 dur-

 

ing this procedure.

 

Preliminary

Disconnect the power cord from the unit and remove

 

 

the chassis covers as described in paragraph 6-2.

 

Procedure

Remove and replace the front panel assembly as fol-

 

 

lows:

NOTE

The screws with green heads have metric threads. When it becomes necessary to replace any of these screws, always use the exact re- placement green-headed screws (ANRITSU P/N 2000-560) to avoid damage to the instrument.

Step 1 Using a Phillips screwdriver, remove the screws and the front handle assemblies from the instrument. (For instruments not having front handles, remove the screws and the front top and bottom feet from the instrument.)

Step 2 Remove the rotary knob from the front panel by pulling straight out on it.

Step 3 Carefully pull the front panel away from the chassis until the screws attaching the front panel assembly to the chassis are accessable.

Step 4 Remove the screws attaching the front panel assembly to the chassis sides.

Step 5 Disconnect the front panel ribbon cables from connectors J1 and J22 of the Moth- erboard.

Step 6 Turn the instrument upside down.

Step 7 Remove the screw attaching the front panel assembly to the chassis pan.

Step 8 Carefully pull the front panel assembly forward until it is clear of the RF OUT- PUT connector.

Step 9 Disconnect the coaxial cables, W119 and W120, from the front panel assembly con- nectors A2J14 and A2J13 by pulling straight out on the cable connectors.

Step 10 To replace the front panel assembly, re- verse the removal process.

6-6

682XXB/683XXB MM

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Anritsu 682XXB, 683XXB Removal Front Panel Replacement Procedures Assembly, 3REMOVING, Replacing the Front, Panel Assembly
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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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