Front Panel Descriptions - Sound Devices 302 User Manual

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F P D
RONT ANEL ESCRIPTIONS
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1. Gain (Trim)
The coarse gain control. Sets the input range so
that fi ne gain control can be applied with the chan-
nel fader.
2. Fader
The primary control for adjusting gain during op-
eration. Allows fi ne control over input levels.
3. Pan Switch
Assigns the input channel to the output bus. Left-
only, Center (equal left and right), or Right-only.
4. Peak LED
When illuminated, indicates that the channel is very
near overload.
5. Limiter LED
When illuminated, indicates that the channel
limiter is operating and reducing channel gain to
prevent overload.
6. High-Pass Filter (Low Cut)
Three-position switch engages the high-pass shelv-
ing fi lter. Used to reduce excessive low frequencies.
12 dB per octave at 80 Hz or 160 Hz. Center position
is off.
7. Polarity Reverse Switch – Channel 2
When engaged, the polarity of channel 2 is reverse
(180° out-of-phase) with respect to input channels
one and three. Useful to fl ip the stereo image when
using MS stereo techniques.
8. Stereo Link LED (Channels 1 & 2)
Indicates that channels 1 and 2 are linked as a
stereo pair. Engaged via a user setup. In L/R stereo
link channel 2 fader controls overall stereo level.
When in MS position channel 1 fader controls Mid,
channel 2 fader controls the amount of stereo (side)
information.
9. Limiter Switch
Activates both input and output limiters. ON is
dual-mono limiter operation, LINK is stereo opera-
tion. Output limiter threshold controlled in User
Setup menu.
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10. Output Meter
Sunlight-viewable, 40-segment LED output meter
indicates peak, VU, or combination peak/VU output
levels. Calibrated in dBu when peak-reading.
11. Meter Brightness
Controls the brightness of the LED output meter.
Each push selects among four brightness levels.
12. Meter Ballistics
Toggles among the available meter ballistic options:
VU-only, peak-only, combo peak/VU, peak-hold/VU.
13. Mic / Tone Switch
Two-position switch activates either the slate mi-
crophone in the left–momentary position, or a tone
oscillator in the right–latched position. Additional
options available in the User Setup Menu.
14. Headphone Selector
Sets the signal source sent to headphones. Options
include: channel PFL 1, 2, 3; left output bus; right
output bus; Mono (summed left and right); STereo
master; RTN - stereo monitor return; MS-mono; MS-
stereo; RTN-MS.
15. Headphone Volume
Adjusts the overall volume of the headphones.
NOTE: the headphone output is capable of ear-
damaging levels. Take care when adjusting among
signal sources.
16. Headphone LED
Indicates overload of the headphone circuit and
RTN circuit.
17. Power Switch / LED
Three-position switch selects between internal
battery power or external DC sources. Power LED
illuminates when power is on. LED fl ashes when
voltage reaches low limit (see Powering).
18. Battery Check Button
Depressing indicates both internal and external
battery levels on the output meter. Battery level is
shown for two seconds after button pressing.
302 Compact Production Mixer
User Guide and Technical Information
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