Sound Devices 633 - Manual (Page 41)

Sample Rate
The 633’s digital audio recorder can record digital audio in the at the following sampling rates:
• 44.1 kHz
• 47.952 kHz
• 47.952 kHz “F” (files stamped 48 kHz)
• 48 kHz
• 48.048 kHz
• 48.048 kHz “F” (files stamped 48 kHz)
• 88.2 kHz
• 96 kHz
• 192 kHz
The sampling rate is set from Setup Menu item RECORDER > Sample Rate . The current Sample Rate
is displayed on the Main Screen. All digital input signal is sample rate converted to the 633’s sam-
pling rate.
When recording MP3 to any media ( See “Track-to-Media Routing”, page 32 ), sample rate is restricted
to 44.1 kHz or 48 kHz. A warning dialog will appear when attempting to record MP3 at an incorrect
sample rate and recording will be prevented.
Bit Depth
When recording WAV files, the 633 records either 16 or 24 bit files. The bit depth for recorded WAV
files is set from the Setup Menu option RECORDER > Bit Depth.
Bit depth defines the digital “word length” used to represent a given sample and correlates to the
maximum dynamic range that is represented by the digital signal. Larger bit depths accommodate
more dynamic range. Sound Devices recommends 24-bit recording for all critical production.
Recording Media
The 633 records to approved removable CompactFlash (CF) and SD/SDHC/SDXC (SD) cards. The
633 can write to one or both of these cards at the same time. Visit www.sounddevices.com/approved for
an up-to-date list of tested and approved cards.
The SD card is inserted with the bottom of the card (the side with metal contacts visible) facing
toward the rear of the 633. Press until it clicks. To remove, push in again to release the spring-loaded
connector, then pull the SD card out.
The CF card is inserted with the top of the card (the side with the manufacturer’s branding label)
facing the rear of the 633. The final few millimeters of insertion require light force. To remove the CF
card, grip it firmly and pull it out.
If the CF card is oriented correctly, it will slide in easily until only a few millimeters are protruding. If
the CF card is oriented incorrectly, it will slide in easily until over 1 cm of the card is still protruding, at
which point it will not slide anymore and further pressure could damage the CF slot.
Formatting Media
Before recording to CF or SD media, cards must be formatted. To format cards in the 633:
1. Press the Menu Button to enter the Setup Menu.
2. Turn the Headphone Encoder to highlight FILE STORAGE, then press the Headphone Encod-
er to enter the FILE STORAGE section.
3. Turn the Headphone Encoder to highlight Erase/Format CF or Erase/Format SD, then Press
the Headphone Encoder to begin the formatting process.
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633 User Guide and Technical Information
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