Technical data
6. Further information
6.1. Technical Data
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Internal memory: 1GB, - 0.74 GB accessible for user
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External memory: Depending on the SD card, maximum 32 GB (at the moment)$
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Voice recording capacity (on internal memory): 26 hours
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Voice recording capacity (on external memory): 32 GB or 46 days
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Bit rate during recording over built-in microphone: 64 kbps
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Bit rate during recording over external microphone: 256 kbps
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Sampling rate during recordings: 44.1 kHz
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Sample resolution during recording: 16 bit
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Bit rate for playback: 8 kbps to 320 kbps, or VBR (Virtual Bit Rate)
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USB 2.0 Hi-Speed connection
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Memory card slot MMC, SD and SDHC, maximum card size 32 GB
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Headphone jack: Standard 3.5 mm
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External Microphone jack: 3.5 mm
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Body made of impact-resistant plastic
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Measurements: 85 x 54 x 14 mm (3.35” x 2.13” x 0.55”)
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Weight: 53 grams (1.7 ounces)
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Built-in rechargeable lithium polymer battery
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Maximum run time: Over 12 hours.
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Maximum charging: 5 hours
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For Speakout: 13.56 MHz reading frequency, standard ISO15693
6.2. Advice
6.2.1. SD Memory Cards
6.2.1.1. Recommended manufacturers
There are many brands of SD cards on the market and they are of different quality. We
suggest SD cards from SanDisk, Kingston, Transcend and Toshiba for untroubled usage.
6.2.1.2. Protect content on a SD card
If you have important files on a SD card or made an archive you would like to protect, you
can use the little switch for write/erase protection that memory cards are equipped with.
Lock position is on the opposite side of the interface. The interface side you recognize by
the angled corner of the card. Milestone 312 recognizes and honors this setting. If
recording is attempted on a write protected memory card the message “Write protected” is
played.
6.2.2. Customize via CONFIG MILESTONE.TXT
In the root directory of Milestone 312‘s internal memory you find the file “CONFIG
MILESTONE.TXT”. In this file you can activate and deactivate devices and functions. You
can do the settings from Menu and further settings. So with this file you can individualize
your device to your needs. If you delete this file the device goes back to its initial state
again and all your settings are gone.
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