Analog Subsystem Assemblies

SYSTEM DESCRIPTION

Receiver Module The Receiver Module consists of the items listed below; refer to Fig- ure 7-2.

Quad Sampler/Buffer Amplifier with integrated SRD (step recov- ery diode)

Power Amplifier

A1, LO1 PCB

A2, LO2 PCB

The Receiver Module is a four channel two stage Sampler/Buffer Am- plifier and Down Conversion unit. It simultaneously converts the four

22.5MHz - 40 GHz signals from the Test Set Module into three 2.5 MHz IF signals that are output to the IF Section.

The first stage of the Receiver Module uses harmonic sampling to down-convert the four 22.5 MHz – 40 GHz output signals from the Test Set Module down to 89 MHz signals. Any input signals below 270 MHz are passed directly through the four harmonic samplers to the second stage without down-conversion. The drive signal to each of the harmonic samplers is a comb of harmonics generated by a step recov- ery diode (SRD).

The Power Amplifier provides the signal that drives the SRD. The in- put to the Power Amplifier is the 357 – 536.5 MHz signal from the A1 First Local Oscillator (LO1) PCB. Regardless of the operating fre- quency, the Power Amplifier is biased on at all times to insure opti- mum thermal stability.

The second stage of the Receiver Module uses the 25.0 – 272.5 MHz signal from the A2 Second Local Oscillator (LO2) PCB to down-convert the 89 MHz signals into four 2.5 MHz IF signals TA, TB, RA, RB (two test signals and two reference signals). Either the Reference A or the Reference B IF signal is selected, as is appropriate for Forward/Re- verse operation. The resultant three 2.5 MHz IF signals (Test A, Test B, and Reference A/B) are output to the IF Section. A buffered version of the Reference A/B signal is also fed to the A8 Source Lock/Signal Separation Control PCB as the Source Lock signal.

The Receiver Module can also select the Reference A IF signal that is output to the IF Section via the Test A switch path. This IF signal is used during Line Reflect Line (LRL) Calibrations to ratio the Refer- ence A and Reference B signals.

7-10

373XXA MM

373XXA specifications

The Anritsu 373XXA series is a notable line of microwave and RF signal analyzers designed for comprehensive analysis and testing of various wireless communication technologies. These analyzers are specifically crafted to meet the demands of modern communication systems, making them ideal for engineers and technicians working in wireless research, development, and manufacturing.

One of the main features of the Anritsu 373XXA series is its wide frequency range, which typically spans from as low as 5 kHz to several GHz, accommodating a vast array of signal types and applications. This extensive frequency coverage allows users to test and validate all manner of systems, from LTE and 5G networks to satellite communications, yielding accurate and reliable measurement results.

The device employs advanced measurement technologies that provide in-depth analysis capabilities. Among these technologies is the ability to perform both time and frequency domain measurements, allowing users to visualize and diagnose signal integrity issues effectively. In addition, the 373XXA series incorporates vector signal analysis, which is crucial in evaluating complex modulated signals, commonly found in today’s sophisticated wireless communication protocols.

Another distinguishing characteristic of the Anritsu 373XXA is its user-friendly interface. It features a large, high-resolution display that enables easy navigation through the analyzer's functions and measurements. The intuitive design is further enhanced by customizable settings and measurement configurations that streamline the workflow, making it accessible for both novice and experienced users.

The 373XXA series also supports various digital and analog signal demodulation techniques, ensuring compatibility with an array of communication standards. Furthermore, users can benefit from its built-in signal generation capabilities, which allows for end-to-end testing of devices and systems under realistic operational conditions.

Portability is another key feature of the Anritsu 373XXA series. The compact design and lightweight structure facilitate easy transport, which is particularly advantageous for field applications where mobility is critical.

Overall, the Anritsu 373XXA series stands out as a versatile and powerful tool for professionals in the RF and microwave field, thanks to its extensive frequency range, advanced measurement technologies, user-friendly interface, and portability. Whether developing new wireless standards or troubleshooting existing systems, the 373XXA delivers precision and reliability essential for today’s dynamic communication landscape.

Anritsu 373XXA manual Analog Subsystem Assemblies

Models: 373XXA