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Stand-alone Setup > Memory Configuration |
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There are two memory configurations available to record data to your memory card. Click on the desired radio button to set the memory configuration.
This option will overwrite data in a FIFO (first-in-first-out) configuration when the size of data exceeds your memory card. If there are existing data files the data logger will only wrap data in the available space on initiation of a recording session.
Note: The circular memory configuration is not available when using the Remote Control feature.
Note: When recording at rates over 7,200 Hz sample rate, gaps in data are more likely to occur. Each gap in data causes the data file to close and start recording again in a new data file. When recording with Memory Configuration set to "circular," once the SD card is full, a gap will cause recording to immediately stop with an error (status LED will flash yellow). Use a recommended SD card (133x or faster) and/or lower the sample rate to decrease or eliminate the chance of gaps in data.
This will close the file and end the recording session automatically when the memory card reaches capacity. The Mode LED of your stand-alone data logger will turn green indicating that the memory card may be removed.
Note: When recording at rates over 7,200 Hz sample rate, gaps in data are more likely to occur. Each gap in data causes the data file to close and start recording again in a new data file. Use a recommended SD card (133x or faster) and/or lower the sample rate to decrease or eliminate the chance of gaps in data.
Start New File on Power Interruption Checkbox
Check this box if you would like the instrument to begin recording a new file after a power failure. If left unchecked the instrument will close the last recorded file and enter Standby Mode (LED will be green).
Note: Clean and solid power on/off (no slow charging and no ringing) required for new file on power interruption. Once power is on, power interrupt cannot happen again within 5 seconds. If persistent failure upon power interruption occurs, consider a universal power supply (UPS).
Note: SanDisk MMC/SD memory cards have a lifetime expectancy of about 100,000 write actions. Each time data wraps you will use one write action; each singular data file uses two write actions (start and stop). If used properly, your memory card should last years. See your memory card’s specifications to determine lifetime expectancy.
