User`s guide

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Quick Reference: 828mkII Front Panel
This is a standard quarter-inch stereo headphone jack. From the factory, its output matches the main outs on the rear panel. But it can be programmed to mirror any other output pair (digital or analog). It can even be programmed to serve as its own independent output. Use the volume knob above to control its level.
These switches provide phantom power for their respective microphone input. Left is off; right is on (right on!)
These round LEDs indicate signal presence on the 8 rear- panel TRS analog and SPDIF outputs. Their threshold is around -42 dB. They do not indicate clipping in any way; use your host audio software level meters to calibrate output levels.
The multi-purpose backlit LCD shows system settings or CueMix DSP settings, depending on which knobs you turn. The labels above and below the LCD refer to all of the 828mkII’s inputs (both analog and digital).
These lights indicate the global sample rate at which the 828mkII is operating. Use the MOTU FireWire Audio Console to set the sample rate or to choose an external clock source, from which the sample rate will be derived. When no clock signal is currently present, one of these LEDs flashes rapidly. For example, if you’ve set the 828mkII to slave to an external clock, such as ADAT, but there is no clock signal currently being detected, it flashes.
FireWire is a “plug-and-play” protocol. That means that you can turn off the 828mkII and turn it back on without restarting your computer.
These two trim knobs provide approximately 42dB of gain for the lo-Z XLR mic input and 17dB for the hi-Z TRS guitar/instru- ment input. Both inputs have preamps, so you can plug just about anything into them: a microphone, a guitar, a synth — but don’t plug in a +4 signal here (due to the preamps): use a rear-panel TRS input instead. Use the trim knob and the “MIC” input level meters over in the metering section to calibrate the input signal level. The meters cover both the TRS and XLR input.
These Neutrik™ combo (XLR/TRS) jacks accept either a mic cable or a cable with a quarter-inch plug. Both the low-impedance XLR jack and the high-impedance TRS jack are equipped with a preamp (so don’t connect a +4 line level XLR cable!). 48V phantom power can be supplied via the front-panel switch. Use the rear panel sends to route these inputs to your favorite outboard gear. Use any rear-panel input as a return.
Controls the headphone volume or main out volume. Push to toggle between them. The LCD provides feedback.
Use the SETUP and SELECT knobs to change system settings like the 828mkII sample rate and clock source. The SETUP knob chooses the setting; the SELECT knob modifies the current system setting displayed in the LCD. Some settings require that you push SELECT instead of turning it.
This section controls the 828mkII’s built-in CueMix DSP monitor mixer. There are four independent mix busses: each mixes all inputs (or any subset you wish) to a stereo output of your choice. To edit a mix, choose it by pressing the MIX BUS knob. Each mix has parameters (volume, pan, etc.) for each input: choose the parameter you wish to edit with the PARAM knob. The LCD shows each 828mkII input (rear-panel analog TRS, front-panel mic/ instrument inputs, ADAT and SPDIF), along with the current mix parameter setting for each input. To change a setting, scroll to it with the CURSOR knob and change it with the VALUE knob.
This bank of input metering is for the 8 analog TRS input jacks on the rear panel.
This pair of 5-segment meters are for the two mic/instrument inputs on the front panel.
4-segment metering for SPDIF input.
5-segment metering for the main outs. Push and then turn the front-panel volume knob for volume control.
ADAT bank signal present LEDs.
MIDI activity LEDs.
When the 828mkII is resolving to SMPTE time code, the LOCK light glows green when lockup has been achieved. The TACH light blinks once per second when the 828mkII is successfully reading address (time code) information.
!828 Manual/Mac Page 5 Tuesday, May 27, 2003 1:45 PM