Table of Contents

Table of Contents
Addendum A - SERVICE MANUAL	1
Foreword	1
Areas of Difference	1
Table of Contents	2
Chapter 1 Differences	3
Chapter 2 Differences	3
Test Equipment Required	3
Measurement Techniques	4
Basic Test Setup	4
Voltage and Current Values	5
Transient Recovery Time	5
CC RMS Noise Measurement Test Setup	5
Performance Test Record	6
Chapter 3 Differences	8
Signature Analysis	8
Self-Test Error Codes/Messages	8
Overall Troubleshooting (sheet 1)	9
Overall Troubleshooting (sheet 2)	10
Overall Troubleshooting (sheet 3)	11
Overall Troubleshooting – sheet 4	12
Overall Troubleshooting (sheet 5)	13
Flow Charts -	13
No Display Troubleshooting	14
OV Will Not Fire Troubleshooting	15
OV at Turn-On Troubleshooting	16
Output Held Low Troubleshooting (sheet 1)	17
Output Held Low Troubleshooting (sheet 2)	18
Output Held High Troubleshooting	19
Initialization and Factory Preset Replacement Program Listing (sheet 1)	20
Initialization and Factory Preset Replacement Program Listing (sheet 2)	21
Initialization and Factory Preset Replacement Program Listing – (sheet 3)	22
Cable and Connector Locations	23
Chapter 4 Differences	25
Digital Signal Processor (DSP) Board	25
Simplified Diagram of DSP Circuits	26
Chapter 5 Differences	27
Chapter 6 Differences	43
Test Points	43
Figure 6-5. A1 Main Board Component Location Coordinates for E4350B	47
Figure 6-5. A1 Main Board Assembly Drawing and Test Points for E4350B	47
Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 1 of 4)	47
Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 2 of 4)	47
Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 3 of 4)	47
Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 4 of 4)	47
Figure 6-6. A4 Left Tunnel Circuit Component Locations for E4350B	47
Figure 6-6. A4A1/A4A3 Left Tunnel Circuit Schematic Diagrams for E4350B	47
Figure 6-7. A4 Right Tunnel Circuit Component Locations for E4350B	47
Figure 6-7. A4A2/A4A4 Right Tunnel Circuit Schematic Diagrams for E4350B	47
Figure 6-10 A5 DSP Board Test Points	47
Figure 6-11 A6 Adapter Board Schematic Diagram	47
Figure 6-12 A7 Phone Adapter Board Component Location and Schematic Diagram	47

2	Service Addendum

E4351B, E4350B specifications

Agilent Technologies, a leader in electronic measurement, offers a range of advanced solutions, including the E4350B and E4351B switching systems. These models are specifically designed to meet the increasing demands of modern testing environments, providing high reliability and precision for a variety of applications.

The Agilent E4350B is known for its low resistance switching capabilities, making it an ideal choice for applications requiring accurate and repeatable measurements. It supports up to 16 channels of low resistance testing, allowing engineers to simulate complex electrical paths and identify potential issues in circuit designs. With an optional temperature measurement capability, users can monitor the thermal performance of components directly during tests.

On the other hand, the E4351B model enhances flexibility with a modular design, offering an extensive range of input and output configurations. This instrument is particularly well-suited for automated test systems, providing the ability to connect multiple devices and manage them seamlessly. Its high-speed switching technology enables quick toggling between channels, ensuring that large datasets can be acquired swiftly without compromising accuracy.

Both models employ advanced contact technology, which minimizes the potential for signal degradation, ensuring that users receive reliable data with minimal noise interference. This feature is crucial in applications where signal integrity is paramount, such as in research and development or quality assurance processes.

Enhanced user interfaces simplify operations for both novice and experienced technicians. The built-in touchscreen and intuitive navigation allow for easy setup and operation, significantly reducing the learning curve. Furthermore, the comprehensive software support provided by Agilent facilitates integration with various programming environments, allowing for custom test sequences tailored to specific needs.

Moreover, both E4350B and E4351B systems are built with durability in mind. The robust construction ensures long-term reliability, reducing downtime and maintenance costs. This makes them ideal candidates for both laboratory settings and field operations where consistent performance is critical.

In summary, Agilent Technologies’ E4350B and E4351B models are distinguished by their precision, flexibility, and robust performance. Their advanced features and user-friendly design make them suitable for a wide variety of applications, from routine testing to complex R&D projects. By leveraging modern switching technologies, these systems set a high standard for electronic measurement, aiding engineers in developing reliable electronic solutions.

Figure 6-5. A1 Main Board Component Location Coordinates for E4350B

Figure 6-5. A1 Main Board Assembly Drawing and Test Points for E4350B

Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 1 of 4)

Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 2 of 4)

Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 3 of 4)

Figure 6-5. A1 Main Board Schematic Diagram for E4350B (sheet 4 of 4)

Figure 6-6. A4 Left Tunnel Circuit Component Locations for E4350B

Figure 6-6. A4A1/A4A3 Left Tunnel Circuit Schematic Diagrams for E4350B

Figure 6-7. A4 Right Tunnel Circuit Component Locations for E4350B

Figure 6-7. A4A2/A4A4 Right Tunnel Circuit Schematic Diagrams for E4350B

Figure 6-10 A5 DSP Board Test Points

Figure 6-11 A6 Adapter Board Schematic Diagram

Figure 6-12 A7 Phone Adapter Board Component Location and Schematic Diagram

Service Addendum

E4351B, E4350B specifications