Functional Block Description

Theory of Operation (2635A) 2A

	ANALOG INPUT CONNECTOR
	INPUT MULTIPLEXING
	INPUT PROTECTION
	INPUT SIGNAL
	CONDITIONING
	ANALOG
	MEASUREMENT
	PROCESSOR
	(A/D CONVERTER)
	MICRO CONTROLLER			A/D CONVERTER
				A/D CONVERTER
					PCA
INGUARD	SERIAL				GUARD
OUTGUARD	COMMUNICATION			CROSSING
					RS-232
	μP	FLASH	NVRAM &
			NVRAM &		MEMORY
			REAL-TIME		MEMORY
		MEMORY	REAL-TIME		CARD
		MEMORY	CLOCK		CARD
			CLOCK		INTERFACE
					INTERFACE
VACUUM FLUORESCENT
DISPLAY
		ADDRESS	RESET		OPTION
DISPLAY CONTROLLER		ADDRESS	RESET		INTERFACE
	DECODING		CIRCUITS		INTERFACE


FRONT PANEL SWITCHES	FPGA				DIGITAL I/O
FRONT PANEL SWITCHES
DISPLAY ASSEMBLY
	POWER	+5.6 Vdc (VDDR)
	SUPPLY	–5.4 Vdc (VSS)		INGUARD
		+5.3Vdc (VDD)
	–30 Vdc (VLOAD)
MAIN PCA	+5.1 Vdc (VCC)		OUTGUARD
	–5 Vdc (VEE)		OUTGUARD
	–5 Vdc (VEE)
	5.4 Vac
					s12f.eps

Figure 2A-2. Overall Functional Block Diagram (2635A)

2A-5

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 Functional Block Description

Models: 2635A 2625A