744T User Guide and Technical Information

After recording is stopped, it can take several seconds for the 744T to finish “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 file 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.

Qualified 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 file is selected), and extension.

scene

take

mono

extension

 

number

number

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.

34

firmware v. 1.04 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.