FUNCTIONAL

682XXB/683XXB

DESCRIPTION

MAJOR SUBSYSTEMS

ALC/AM/Pulse

This circuit subsystem consists of the A6 Pulse Gen-

Modulation

erator PCB, the A9 PIN Control PCB, the A10 ALC

 

PCB, and the A14 SDM, SQM Driver PCB. It pro-

 

vides the following:

 

Level control of the RF output power.

 

AM and pulse modulation of the RF output.

 

Current drive signals to the PIN switches lo-

 

cated in the Switched Filter assembly and

 

Switched Doubler Module (SDM).

 

Bias voltages for the SDM and Source Quadru-

 

qpler Module (SQM).

 

Drive signals for the optional Step Attenuator.

 

The CPU controls the A9 Pin Control PCB and the

 

A10 ALC PCB via the dedicated data and address

 

bus. It sends control data to the A6 Pulse Generator

 

PCB via the A16 PCB as serial data words. Refer to

 

paragraph 2-4 for a functional overview of the ALC

 

and modulation subsystem.

RF Deck

This subsystem contains those elements related to

 

the generation, modulation, and control of the

 

sweep- and CW-frequency RF signals. These ele-

 

ments include; the 2 to 20 GHz YIG-tuned oscillator,

 

the 0.01 to 2 GHz (0.5 to 2.2 GHz) Down Converter

 

assembly, the Switched Filter assembly, the

 

Switched Doubler Module (SDM), the Source Quad-

 

rupler Module (SQM), the Directional Coupler/Level

 

Detector, and the optional 110 dB (90 dB) Step

 

Attenuator. Refer to paragraph 2-5 for a functional

 

overview of the RF deck subsystem.

Power Supply

The power supply subsystem consists of the A15

 

Regulator PCB, the A18 Power Supply PCB, the

 

A19 Line Conditioner PCB, and part of the A21

 

Rear Panel PCB and Rear Casting Assembly. It sup-

 

plies all the regulated DC voltages used by the sig-

 

nal generator circuits. The voltages are routed

 

throughout the instrument via the A20 Mother-

 

board PCB.

Inputs/

The A21-1 BNC/AUX I/O Connector PCB and the

Outputs

A16 CPU Interface PCB contain the interface cir-

 

cuitry for the majority of the rear panel input and

 

output connectors, including the AUX I/O connector.

 

The front panel AM and External ALC inputs are

 

routed via the A20 Motherboard PCB to the A10

 

ALC PCB. The front panel FM and Pulse Trigger

2-8

682XXB/683XXB MM

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Image 36
Anritsu 682XXB, 683XXB manual ALC/AM/Pulse

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.