Pin Name | Fluke 2625A, 2635A specification

Theory of Operation (2620A/2625A)	2
Detailed Circuit Description

Name

VDD

ACBO AIN AGND2 ACR4

ACR3

ACR2

ACR1

VSSA REFJ

DCV

LOW

GRD

RRS

GRD

V2F

GRD

V0 GRD OVS GRD AGND1

DGND FC0 FC1 FC2

FC3

FC4

FC5

FC6

FC7

XIN XOUT MRST AS AR

BRS

VSS

INT

Table 2-4. Analog Measurement Processor Pin Descriptions

Description

+5.4V supply AC buffer output (not used) Analog ground

AC buffer range 4 (300V)

AC buffer range 3 (30V) AC buffer range 2 (3V)

AC buffer range 1 (300 mV) -5.4V supply for AC ranging Reference junction input

A/D converter low input Driven guard

Reference resistor sense for ohms

Tap #4 on the DCV input divider/ohms reference network Tap #3 on the DCV input divider/ohms reference network

Tap #1 on the DCV input divider/ohms reference network Driven guard

Tap #2 input on the DCV input divider/ohms reference network Tap #2 on the DCV input divider/ohms reference network Driven guard

Tap #0 on the DCV input divider/ohms reference network Driven guard

Ohms and volts sense input Guard

Analog ground

(not used) Analog ground Function control #0 Function control #1 Function control #2

Function control #3 (not used)

(not used) Function control #6 Function control #7

Crystal oscillator input

Crystal oscillator output

Master reset

Analog send

Analog receive

Serial clock Chip select (not used)

-5.4V dc Integrator output

2-19

2635A, 2625A specifications

The Fluke 2625A is a sophisticated data logger designed for a wide range of industrial and laboratory applications. This versatile instrument excels in capturing and monitoring temperature and voltage measurements with precision and reliability. One of its standout features is its ability to record data from various sensors, making it ideal for environments where comprehensive data acquisition is critical.

Equipped with a large LCD display, the Fluke 2625A provides clear and user-friendly access to real-time measurement data. Its graphical interface allows users to visualize trends and monitor readings easily, which significantly enhances usability. The device supports a variety of input types and can connect to thermocouples, RTDs, and other sensors, offering great flexibility for various measurement tasks.

The Fluke 2625A employs advanced measurement technologies that ensure accuracy in data logging. With a high sampling rate, it captures fast-changing signals while maintaining data integrity. The device features a built-in memory that allows for extensive logging, accommodating long-term monitoring tasks without requiring constant oversight. Users can set it to log data at specified intervals, offering customizable solutions for different monitoring needs.

Another significant characteristic of the Fluke 2625A is its robust communication capabilities. The device supports USB and RS-232 interfaces for easy connectivity with computers and other devices, making data transfer and analysis seamless. This feature is especially beneficial for users who need to compile or analyze large sets of data quickly.

Furthermore, the Fluke 2625A is designed with durability in mind. Its rugged construction makes it suitable for challenging environments, including those with high levels of vibration, dust, or moisture. This reliability ensures that the device can withstand the rigors of fieldwork while still delivering accurate measurements.

In summary, the Fluke 2625A is a powerful data logger that combines versatility, accuracy, and reliability. Its user-friendly interface, advanced measurement technologies, and robust design make it an essential tool for professionals in various industries, from manufacturing and HVAC to research and development. Whether monitoring temperature changes in a laboratory or assessing voltage levels in an industrial setting, the Fluke 2625A stands out as a trusted solution for effective data logging and analysis.

Fluke 2625A, 2635A service manual Pin Name, Analog Measurement Processor Pin Descriptions

Models: 2635A 2625A

Pin

Name

Table 2-4. Analog Measurement Processor Pin Descriptions

2635A, 2625A specifications