SIGNAL PATHS

TROUBLESHOOTING

16.8 GHz

Lowpass

Filter

J4

2-20GHz

YIG Oscillator

9.5-

16.25GHz

 

Ref A

 

X4

 

 

 

 

 

Ref A 38-65 GHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ref A 38-65 GHz

 

37 GHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3

 

 

 

(SQM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HiPass Filter

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

 

Forward

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPDT Switch

 

 

 

 

 

 

 

 

 

 

 

 

MUX Coupler

 

40MHz-65GHz (Ref A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(forward)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 dB Pad

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4

Ref B 38-65 GHz

37 GHz

 

 

 

 

 

 

 

 

 

 

 

 

J2

 

 

 

(SQM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HiPass Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reverse

 

 

 

 

 

 

 

DCV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ref B

 

 

 

 

 

 

 

 

 

 

J4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rear

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First LO

(A1 PCB)

(357-536MHz)

Power Amp

Second LO

(A2 PCB)

(25-272MHz)

Switched Filter

J5

40MHz-

2GHz

15 dB Pad

Down

Converter

YIG tuning currents

Bias Voltages to YIG,

Switched Filter

Down Converter, SAM

A21A1 PCB

40MHz-

19GHz

6.3-

8.3GHz

 

 

 

 

 

 

 

 

 

Ref B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Panel

 

 

 

 

 

 

 

 

 

38-65

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shaped Pad

 

 

 

 

 

Access

 

 

 

 

 

 

 

 

 

GHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Loop **

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X2

 

 

 

 

 

J5

 

 

 

 

3 dB pad

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40MHz-38GHz

 

 

 

 

 

 

 

 

 

 

 

 

 

MUX Coupler

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(SDM)

 

 

 

Transfer Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(reverse)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Ref A/ Ref B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 dB pad

 

 

 

 

 

Shaped Pad

 

 

 

 

 

 

Ref A 40MHz - 38GHz

 

 

 

 

J5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Control)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 dB pad

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J4

 

 

 

 

 

 

 

 

 

 

J4

 

 

 

 

40MHz -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ref B 40MHz - 38GHz

 

 

 

 

 

 

 

 

 

65GHz (Ref B)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DCV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ALC Control PCB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49808-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDM Control

 

 

 

 

 

 

 

 

 

 

 

DC

 

 

 

 

 

 

 

 

Control of SPDT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

switch, transfer switch,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

buffer amp, power

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

amp, ALC control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Digital and Analog Control

 

 

 

 

 

 

 

 

 

 

DC voltage (6 MHz / Volt)

 

 

 

 

A8 PCB

 

 

 

 

 

 

 

A21A2 PCB

 

 

 

 

 

Source Lock/ RF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J1

J2

 

 

 

 

 

 

 

 

 

 

J1

 

 

 

 

 

 

 

 

 

 

 

 

 

Component Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 dB Pad

3 dB pad

2.5 MHz CW

J1

Sampler/Buffer Amp

J5J3

Ref A

Ref B

2.5 MHz CW

J8J7

J4 A4 PCB Reference IF Processor

NOTE: Sampler/Buffer amplifiers are individually matched to Power Amplifiers. If either fails, both should be replaced with another matched set, part number ND53249.

** Indicates not present on model 37297B or 37277B

Figure 5-4.37397A Source Lock Signal Path Diagram

5-26

373XXA MM

Page 80
Image 80
Anritsu 373XXA manual Signal Paths Troubleshooting, Sqm

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.