FLUKE Calibration福禄克计量校准2620A 2625A 2635A 便携型多路温度采集器 2625A Statement of Memory Volatility (23.61 KB).pdf

Instrument Security Procedures Model: Fluke Hydra 2625A Product Name: Data Logger Instrument Description: The Hydra 2625A is a Data Logger that measures DC and AC RMS voltage, temperature, resistance, and frequency. It features non-volatile memory that stores more than 2000 scans, for stand-alone applications. It is easy to set up and configure from the front panel. It includes bi-directional communication via RS-232C, which enables control from a host computer. Memory Description: The 2625A has the following memory devices: Two 128K x 8 bit NVRAM chips on the A6 Memory PCA. This memory contains up to 2047 scans of measurement data acquired by the user. The acquired data is cleared by remote command or by the user from the Hydra front panel as described in the procedure below. An 8K x 8 bit SRAM in the Non-Volatile RAM/Real-time clock module on the A1 Main PCA. The SRAM contains the instrument configuration settings, plus minimum, maximum, and last Review readings for each channel; also, a portion is used as working memory by the microprocessor. 1. The configuration settings are cleared when the Hydra’s instrument configuration is changed or cleared by remote commands or by a user from the front panel, as described in the procedure below. 2. Review readings data are cleared automatically when the instruments configuration is cleared or changed as described above. 3. The working memory portion is cleared by the power up self-test when the Hydra unit is turned on. A 64 x 16 bit EEPROM chip on the Main PCA. This memory contains calibration constants. Data remains in this non-volatile memory until the unit is re-adjusted at a C