744T User Guide and Technical Information

combination the user gets the best of both VU and Peak metering by seeing both the “loudness” of the signal and the peaks at the same time. Peak/VU is the factory default.

Peak Hold/VU

Similar to VU/Peak mode, this mode holds the peak level indication for several seconds before releasing. Peak Hold indicators are useful for metering in applications when an overload condition is unacceptable.

Peak LEDs

input peak LEDs

input signal present LEDs

headphone peak LED

In addition to the main LED output meter, peak LEDs show input peaks, track peaks, and headphone peaks.

Input Peak

The 744T has a peak LED associated with each input. These LEDs illuminate when input signals reach the user-selected signal threshold.

Track Peak

The 0 dBFS LED on each track can also function as a track peak indicator. The user can select a signal threshold above which the 0 dB LED will flash.

Headphone Peak

Like the channel peak LEDs, the headphone circuit has an indicator for peak overload. This LED is useful, since headphones can often overload before the recorder overloads. Monitoring without a visual indication of headphone clipping may mislead the operator into thinking that the output or return tracks are distorting.

Tone Oscillator

The tone oscillator level and frequency are user selectable. Reference level is adjustable over a range of −40 to 0 dBFS. Reference tone frequency is adjustable from 100 to 10,000 Hz. Standard tone levels vary according to the practices and needs of production and post-production, but are generally in the -20 to −12 dBFS range. Select a range that is appropriate for your project one that will allow suf- ficient headroom.

The tone oscillator is activated by pressing the front panel key. Tone is sent to all active tracks while the key is depressed.

LCD Contrast & Backlight, LED Brightness

LCD

LCD contrast is setup menu controlled. From the factory the contrast is set to 20%, suitable for most viewing conditions. Contrast can be increased or decreased.

The front panel

key toggles the LCD and key backlight. Backlighting is suitable for low- and

no-light recording.

 

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