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744T User Guide and Technical Information
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firmware v. 1.04 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
After recording is stopped, it can take several seconds for the 744T to fi nish “housekeeping” on CF. When
preparing to remove the CF, always observe the amber activity LED for the CF medium. If it is lit, wait
until it goes out before removing the CF. If the CF is removed while the LED is lit, at the very least the fi le
will be corrupted and there is a possibility of FAT corruption as well.
Testing
CF cards varied widely in their write/read throughput. Later generation “24x” and greater CF cards
can reliably read and write multi-track, high sample rate audio. The 744T includes a drive speed test
to measure the throughput speed of CF medium. Measured numbers greater than 3000 KB/s can
reliably write 24/96 x 4 channels.
Not all CF medium can sustain write speeds for reliable 192 kHz recording. Use the speed test utility to
make certain that installed medium can support the selected number of tracks at 192 kHz.
Drive Repair
The same drive repair utilities are available for the CF as the internal hard drive.
Qualifi ed CF Cards
Several CF mediums have been tested and “approved” for use in the 7-Series, including Lexar
Media, SanDisk, and Kingston Technology cards in capacities ranging from 512 MB to 4 GB. It is not
feasible for Sound Devices to test all available CF cards for compatibility or maximum throughput
with the 744T. Use the CF transfer speed test to verify that an installed card can support the needed
read/write speed.
File Naming / Numbering
Files generated by the 744T are named using a syntax made up of four parts: scene number, take
number, mono track designator (if mono fi le is selected), and extension.
scene
number
take
number
extension
mono
file
designator
Scene Numbers
Scene numbers are user-selected in the setup menu and remain unchanged until changed by the
user. Scene numbers start with the letter “S” followed by three-digit integers between 001 and 999.
Scene numbers are helpful to match audio with the corresponding scene in production.