REMOVAL AND

REAR PANEL

REPLACEMENT PROCEDURES

ASSEMBLY

6-10REMOVING AND

This paragraph provides instructions for removing and replacing the

REPLACING THE REAR

rear panel assembly of the 682XXB/683XXB. The rear panel assembly

PANEL ASSEMBLY

contains the A21 Line Filter/Rectifier PCB, the A21-1 BNC/AUX I/O

 

Connector PCB, the line module assembly, and the fan assembly. Refer

 

to Figure 6-4 during this procedure.

 

Preliminary

Disconnect the power cord from the unit and remove

 

 

the chassis covers as described in paragraph 6-2.

 

 

 

 

 

 

 

 

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 rear panel assem-

 

bly.

 

 

 

 

Procedure

Remove and replace the rear panel assembly as fol-

 

 

lows:

 

 

Step 1 Using a Phillips screwdriver, remove the

 

 

screw on the top of the rear panel assem-

 

 

bly that fastens the rear panel assembly

 

 

to the bracket attached to the power sup-

 

 

ply housing.

 

 

Step 2 Turn the instrument upside down.

 

 

Step 3 Remove the three screws from the rear

 

 

panel assembly. (One screw fastens the

 

 

rear panel assembly to the bracket at-

 

 

tached to the power supply housing; the

 

 

other two screws attach the rear panel as-

 

 

sembly to the Motherboard.)

 

 

Step 4 Return the instrument to the upright po-

 

 

sition.

 

 

Step 5 Remove the screws attaching the rear

 

 

panel assembly to the chassis sides.

 

 

Step 6 Using a 7 -inch wrench, disconnect the

 

 

16

 

 

 

coaxial cables (W110, W109, and W130)

 

 

going to the rear panel 10 MHz REF IN,

 

 

10 MHz REF OUT, and FM IN BNC con-

 

 

nectors.

 

 

Step 7 Disconnect the coaxial cables W127,

 

 

W128, and W129 from the A21-1 PCB by

 

 

lifting up on the cable connectors.

 

 

Step 8 Remove the power supply cover and set it

 

 

aside.

682XXB/683XXB MM

6-13

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Image 233
Anritsu 683XXB, 682XXB manual Removal Rear Panel Replacement Procedures Assembly, 10REMOVING, Replacing the Rear
Page 232 Page 234

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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