Memory Card Operations 3

Inserting and Removing the Memory Card

Memory Card Battery

A typical SRAM is powered by an internal lithium 3-volt battery that has a minimum life of five years for a 256K-byte card, and two years for a 1M-byte card. If the battery voltage falls below 2.75 volts, the front panel BATT indicator will light (see Figure 1-1). Battery life is reduced in applications with high ambient temperature.

Inserting and Removing the Memory Card

Memory card operations that involve inserting and removing the card are described below. Any illegal memory card operations result in an instrument double "beep" and an error message. Error messages are summarized in Table 3-1.

Inserting a Memory Card

To insert the memory card into the instrument, orient the card so the insertion-direction arrows are on top and point towards the card reader slot. Push the card at the center of the edge into the slot until resistance is noted, then firmly push until seated in the connector. If the instrument responds with a double beep and error message, the inserted card is unformatted (see the initialization procedure in Figure 3-3).

Removing a Memory Card

To remove the memory card from the instrument, press the ejection button to the right of the card (see Figure 1-1). The button should be pressed firmly until it becomes flush with the instrument front panel. This action ejects the card from the connector and pushes it free of the reader assembly. Grasp the card and remove from the instrument.

Changing the Memory Card During Scanning

When recording measurement data to a memory card that is nearly full (as noted by the percent indication), remove the memory card in the normal way when the BUSY indicator is off. Then insert a new memory card (be sure it is formatted), which will automatically open a file with the same number and continue recording data. For example, if scanning started with dAt17 on the original card, dAt17 will be opened on the replacement card. If the same filed already exists on the replacement card, e.g., dAt17, an error message appears. No data is lost during this operation as the instrument stores up to 75 scans when the memory card is removed during scanning, and the new memory card is immediately updated with this stored data. The PC software "Logger" allows separate memory card files to be combined into a single file.

Setting the Memory Card Write-protect Feature

The memory card (Figure 3-1) has a write-protect switch that can be positioned to prevent the writing of data to the card, the erasing of any dAtxx or SEtxx file, or the initialization of the memory card. Normally, this switch is placed in the read/write position. However, if the card has critical data that should be protected, the switch is placed in the write-protect (read only) position.

Installing or Replacing the Memory Card Battery

To install or replace the battery in the memory card, follow the instructions supplied with the memory card. A typical battery installation is shown in Figure 3-1. Memory card batteries are readily available from supply houses serving the computer industry (typically 3V dc, Panasonic BR2325, Maxell CR2025, or equal).

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Fluke 2635A user manual Inserting and Removing the Memory Card, Installing or Replacing the Memory Card Battery
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2635A specifications

The Fluke 2635A is a highly advanced multichannel data acquisition system designed for engineers and technicians requiring precision and versatility in their measurement tasks. This instrument excels in monitoring and capturing data from various sources, making it a valuable tool in laboratories, production environments, and field applications.

One of the standout features of the Fluke 2635A is its ability to support up to 20 measurement channels. Users can simultaneously monitor multiple signals, which is crucial for complex testing scenarios where numerous variables need to be tracked. The device is equipped with a 6.5-digit precision measurement capability that ensures high accuracy and resolution in readings. This level of precision is particularly beneficial in applications such as environmental monitoring, research and development, and industrial process control.

The unit incorporates a variety of measurement modes, including voltage, current, temperature, and resistance, making it exceptionally versatile. The Fluke 2635A not only handles standard signals but also integrates with various transducers, providing extensive compatibility for users engaged in diverse testing applications.

To enhance data management, the Fluke 2635A offers advanced data logging capabilities. Data can be stored internally or transferred to external devices for further analysis. The internal memory can accommodate extensive datasets, which can be crucial in long-term monitoring tasks. Integration with external software enables users to analyze and visualize data effectively, allowing for informed decision-making based on comprehensive results.

The user interface is designed for ease of use, featuring a large, bright LCD display that clearly presents measurements and status information. The device is also equipped with a simple navigation system, allowing users to switch between channels and measurement types without hassle.

In terms of construction, the Fluke 2635A is built to withstand rigorous environments. It features a robust design that ensures reliability and durability, making it suitable for both laboratory settings and field operations. Furthermore, the device supports a wide temperature range, thus enabling usage in diverse conditions.

Overall, the Fluke 2635A is a powerful and flexible instrument that provides precise measurements across multiple channels, supporting a wide range of applications. Its advanced technology, combined with user-friendly features, makes it an essential tool for professionals in various fields. The combination of accuracy, flexibility, and durability solidifies its standing as a trusted choice for data acquisition and monitoring tasks.
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