Sound Devices 633 - Manual (Page 27)

Peak Hold
When Peak Metering is enabled (Peak Only or Peak + VU), peak hold displays the last high-
est peak value on the meter as a separate, individual meter segment. By default this meter
segment will remain visible for 1 second. This time can be adjusted from Setup Menu option
SYSTEM > Meter Peak Hold Time to 1, 2, 3, 4, or 5 seconds. The Infinity option will display the last
highest peak indefinitely until a higher peak is reached. The Off option will disable peak hold.
Input Activity LED
Each Input has its own Input Activity LED ( See “Front Panel”, page 1 ). The LED illuminates in
various colors and intensities to represent the signal level appearing at its respective input. Green =
pre-fader signal activity, yellow = pre- and post-fader limiter activity, red = pre- and post-fader sig-
nal overload (clipping). Reduce the trim level control if the LEDs continuously illuminate yellow or
red. The Input Activity LED will flash yellow when the Input PFL is latched. ( See “PFL (Input Solo)”,
page 24 )
Headphone Clipping LED
The Headphone Clipping LED is located just left of the Headphone Encoder. This LED will illumi-
nate red to indicate clipping in the headphone amplifier. Monitoring without a visual indication of
headphone clipping can mislead the sound mixer into thinking that the output or return feeds are
distorted.
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633 User Guide and Technical Information
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