Sound Devices 442, User Manual And Technical Information, Page: 7 / 34

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14)
Power Switch
Three-position switch, selects between
internal battery power or external DC
sources, middle position is Off.
15)
Gain (Trim)
Coarse input gain control. Sets the
initial input sensitivity level so that the
Channel Fader can be used for fi ne gain
adjustments. Range is from +22 dB to
+60 dB.
16)
High-Pass Filter
Adjusts corner (-3 dB) frequency of
high-pass fi lter. Full counter-clockwise
position (de-tented) deactivates the
High-Pass Filter. Range is 80-240 Hz,
12dB/oct to 6 dB/oct.
17)
Limiter Switch
Activates both Input and Output
Limiters. Input Limiters can be
defeated in the Setup Menu. When
ON is selected, the Output Limiters act
independently on each Left and Right
Outputs. When LINK is selected, the
Output Limiters are linked and limiting
is applied evenly across the Stereo
Outputs.
18)
Master Gain
Controls the overall signal level of the
Left and Right Outputs.
19)
Monitor Selection Switch
Selects the signal source in headphone
monitor. Options include: Off; Left
Output bus; Right Output bus; Mono
(summed left and right); STereo master;
Return A; Return B; Return A in the
left / Return B in the right headphone
monitor; MS-Left; MS Right; MS-stereo.
20)
Headphone Gain
Adjusts the overall headphone gain.
21)
Output Limiter LEDs
Illuminates orange when the Output
Limiter is active, LED intensity signifi es
amount of limiting. If signifi cant Output
Limiting occurs, reduce the levels of the
Channel and Master faders accordingly.
22)
Return Monitor Toggle Switch
Sends the return audio signals to the
headphone monitor. Left position
latches and right position is momentary.
Return routing relative to switch
position can be modifi ed in the Setup
Menu. Factory default is RTN A on the
left, middle is Off, and RTN B on the
right.