Yamaha 02R96 Owner's Manual - Page 52
Analog I/O & the AD Input AD Input
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Analog I/O & the AD Input Section 39 4 Analog I/O & the AD Input Section AD Input Section The 02R96 features 24 AD Inputs for connecting microphone and line-level sources. AD Inputs can be patched to Input Channels or Input Channel Insert Ins (see page 52). They can also be patched to Output Channel Insert Ins (see page 55). AD Input Connectors (AD 1-16) AD Inputs 1 through 16 feature balanced XLR-3-31-type connectors and balanced 1/4-inch phone jacks, both with a nominal input range of -60 dB to +10 dB. The phone jacks, which can also be used with unbalanced phone plugs, have priority over the XLR-type connectors, so when a phone plug is inserted, the XLR-type connector is disconnected. AD Input Connectors (AD 17-24) AD Inputs 17 through 24 feature balanced 1/4-inch phone jacks, with a nominal input range of -34 dB to +10 dB. They can also be used with unbalanced phone plugs. Phantom Power (AD 1-16) +48V ON OFF AD Inputs 1 through 16 feature switchable +48 V phantom powering for use with condenser-type microphones and direct boxes. Phantom power is supplied to the balanced XLR-3-31-type connector, and can be switched individually for each AD Input. Pad (AD 1-16) AD Inputs 1 through 16 feature pad switches, which attenuate input signals by 26dB 26 dB, allowing the Head Amps to work with high-level signals. Pad is typi- cally used to attenuate "hot" signals from bass or snare drum microphones, or "hot" line-level signals. Gain AD Inputs feature detented rotary gain controls with an input sensitivity of -16 dB to -60 dB, or +10 dB to -34 dB when the Pad is on (+10 dB to -34 dB -16 -60 GAIN for AD Inputs 17-24). The GAIN controls adjust the gain of the Head Amps, AD Inputs 1-16 allowing you to optimize input signal levels for the best signal-to-noise perfor- mance. Ideally, the GAIN control should be set so that the signal level is rela- tively high, and it's okay for the PEAK indicator to light up occasionally. If the +10 34 GAIN AD Inputs 17-24 PEAK indicator lights up often, however, you should back off the GAIN con- trol a little, otherwise, signal clipping may occur. If the GAIN is set too low, the signal-to-noise performance will suffer. PEAK & SIGNAL Indicators These indicators are used in conjunction with the GAIN controls and PAD PEAK switches to optimize signal levels. The SIGNAL indicator lights up when the SIGNAL input signal level is 20 dB below nominal. The PEAK indicator lights up when the input signal level is 3 dB below clipping. 02R96-Owner's Manual