Diagnostic Testing and Troubleshooting (2635A) 5A

Error Codes

Error

1

2

3

4

5

6

7

8

9 A b

C d

Error 1

Error 2

Error 3

Error 4

Error 5

Error 6

Error 7

Error 8

Table 5A-1. Error Codes (2635A)

Description

Boot Firmware (A1U14 and A1U16) Checksum Error

Instrument Firmware (A1U14 and A1U16) Checksum Error

NVRAM (A1U20 and A1U24) Test Failed

Display Power-up Test Failure

Display Not Responding

Instrument Configuration Corrupted

Instrument Calibration Data Corrupted

Instrument Not Calibrated

A/D Converter Not Responding

A/D Converter ROM Test Failure (A3U9)

A/D Converter RAM Test Failure (A3U9)

A/D Converter Self Test Failure

Memory Card Interface Not Installed

Refer to Troubleshooting information later in this section

Boot Firmware (A1U14 and A1U16) Checksum Error

All the bytes in the Boot section of Firmware (including a checksum) are summed.

Instrument Firmware (A1U14 and A1U16) Checksum Error

All the bytes in the Instrument section of Firmware (including a checksum) are summed.

NVRAM (A1U20 and A1U24) Test Failed

A test pattern of data is written to and then read from the NVRAM locations that are not used for Non-volatile instrument configuration and measurement data. If the pattern read from any RAM location is not the same as the pattern written, the test fails.

Display Power-up Test Failure

Display Not Responding

The display processor automatically performs a self-check on power-up, and the Microprocessor attempts to read the result of this test.

Instrument Configuration Corrupted

The instrument configuration information stored in nonvolatile RAM (A1U20 and A1U24) has been corrupted. (The Cyclic Redundancy Checksum on this memory is not correct for the information stored there.) The instrument configuration is reset to the default configuration.

Instrument Calibration Data Corrupted

The Flash Memory (A1U14 and A1U16) is divided into three storage areas: the Boot Firmware, the Calibration Data, and the Instrument Firmware. The Calibration Data uses a Cyclic Redundancy Checksum (CRC) for data security, against which the data is checked on power-up.

Instrument Not Calibrated

The calibration data includes status information to indicate which of the measurement functions (Volts DC, Volts AC, Ohms, and Frequency) have been calibrated. If any functions have not been calibrated, this error is reported.

Note

Errors 7 and 8 should always appear the first time an instrument is powered up with a new, uninitialized Flash Memory. Error 8 continues to appear at subsequent power-ups until the instrument is fully calibrated.

5A-5

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Fluke 2625A service manual Error Codes 2635A Description

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.