FUNCTIONAL

682XXB/683XXB

DESCRIPTION

MAJOR SUBSYSTEMS

The CPU is indirectly linked via the A16 CPU Inter- face PCB to the A3 Reference Loop PCB, the A4 Coarse Loop PCB, the A5 Fine Loop PCB, and the A6 Pulse Generator PCB. The A16 PCB contains cir- cuitry to perform parallel-to-serial and serial-to- parallel data conversion. It also contains circuitry for many of the rear panel signals, a 13-bit resolu- tion DVM, and decoder circuitry for the front panel rotary data knob optical encoder.

Front Panel This circuit subsystem consists of the the A1 Front Panel PCB, the A2 Front Panel Control PCB, and the Liquid Crystal Display (LCD). This subsystem interfaces the front panel LCD, LEDs, and keys to the CPU via the dedicated data and address bus. The front panel rotary data knob is indirectly linked to the CPU via the A16 CPU Interface PCB.

The A1 Front Panel PCB contains the keyboard ma- trix of conductive rubber switches. The A2 Front Panel Control PCB has circuitry to control the LCD dot-matrix display, turn the front panel LEDs on and off, and convert keyboard switch matrix signals to parallel keycode. It also contains the standby/op- erate line switch logic circuit and the optical encoder for the rotary data knob.

Frequency The frequency synthesis subsystem consists of the

Synthesis A3 Reference Loop PCB, the A4 Coarse Loop PCB, the A5 Fine Loop PCB, the A7 YIG Loop PCB, and the A11 FM PCB. It provides the reference frequen- cies and phase lock circuits for precise control of the YIGq-tuned oscillator frequencies, as follows:

The A3 Reference Loop PCB supplies the sta- ble 10 MHz and 500 MHz reference frequency signals for the rest of the frequency synthesis system.

The A4 Coarse Loop PCB generates coarse tuning frequencies of 219.5 to 245 MHz for use by the YIG Loop.

The A5 Fine Loop PCB provides fine tuning frequencies of 21.5 to 40 MHz for use by the

qYIG Loop.

The A7 YIG Loop PCB performs phase detec- tion of the YIG-tuned oscillator’s output fre- quency and provides a YIG loop error voltage

qto the A11 FM PCB.

The A11 FM PCB processes the YIG loop error voltage, producing a correction signal that is

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682XXB/683XXB MM

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Anritsu 682XXB, 683XXB manual Functional, Description
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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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