Sound Devices 302 - Manual (Page 18)

302 User Guide and Technical Information
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v. 3.6 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Mixer Linking
Link two 302 mixers together for higher input
channel counts by connecting the Tape Out/Mix
Out of 302A to the Mix In of 302B.
The Stereo Output program
of 302A is sent directly to the
Stereo Output program of 302B.
302B 302A
To add inputs to the 302, an additional mixer can be connected (linked) into its Mix In connection.
The unbalanced Mix In connection is directly compatible with Sound Devices MixPre, 302, and 442
mixers. A simple connection between those mixer’s Mix Out/Tape Out and the 302 Mix In, adds
their input channel to the 302’s output bus. The unit connected via the Mix In will contain all inputs.
When linking with a 442 a system of seven microphone inputs is achieved. Generally when linking
to a 442, the 442 is used as the master, linking with the 302’s Mix Out to the 442’s Mix In. At the 442
outputs, all seven inputs appear.
Sound Device XL-1B accessory cable can be used to link multiple 302 mixers or 302 and 442 mixers.
Sound Devices XL-3 accessory cable can be used to link a MixPre to the 302 for a five input system.
Link cables must be wired to short pin-1 to connector shell in order to open the Mix In connection.
Powering
The 302 can be powered from either internal batteries or from external DC. The power-efficient
302 can operate from three AA alkaline batteries for nearly a production day (less with phantom
powering). While many users prefer external DC sources to power both their mixer and wireless
receivers, the use of internal batteries is perfectly feasible for both primary and backup powering of
the 302.
Power Switch and LED
The 3-position power switch selects between internal batteries, external DC, or power off. Because
of the power supply design of the 302, the unit takes approximately 10 seconds to fully stabilize its
power supply after power-up. Additionally, there is sufficient capacitance in the circuit to toggle
between internal and external without disruption in audio.
The power LED illuminates solid green to indicate good power. When the power source falls
below the threshold voltage See the Setup Menu Chart the power LED begins to flash. Once flashing
changing the power source is recommended.