Universal Audio Apollo Software - Manual (Page 106)

Apollo Software Manual Chapter 7: Multi-Unit Cascading 106
Multi-Unit Operation
Power On Sequence
When multi-unit cascading, the order in which the Apollo monitor and expander units are
powered on is important for proper initialization. For optimum results, follow the recom-
mended power up sequence:
1. Shut down the host computer system
2. Confirm monitor/expander designations and wiring (see above)
3. Power on the monitor unit
4. Power on the expander unit
5. Start the host computer
Important: If multi-unit cascading via Thunderbolt, power up the expander unit
before the monitor unit.
Monitor Level Controls
Monitor Outputs
When multi-unit cascading, both units share the same monitor mix bus. The monitoring
speaker system must be connected to the monitor outputs of the monitor unit. The moni-
tor outputs of the expander unit are disabled.
Monitor Knobs
The monitor knob on the front panel of expander unit, and its surrounding green LED
ring, are disabled. Use the front panel monitor knob on the monitor unit (or the monitor
level controls in Console or the Console Recall plug-in) to adjust the monitor output level.
Send Bus Outputs
When multi-unit cascading, the send mix buses of both units are summed and these
buses are sent to the monitor unit only. The associated outputs on the expander unit are
disabled.
Clocking
Internal
When the units are connected according to the
Multi-Unit Wiring Diagrams , all system
clocking and clock settings are automatically configured by the device drivers. On both
units, the clock source should remain on “Internal” unless specifically clocking to an
external (non-Apollo) device.
Note: When the clock source in the Console Settings window is set to Internal,
“EXT” will illuminate on the designated expander unit hardware’s front panel.