User`s guide
APOGEE ELECTRONICS
5
AMBus FireWire card – User’s Guide
Working with OS X
3 Computer is slave, AMBus FireWire device is master, locked to another external source such
as word clock.
1 In OS X’s Audio Midi Setup, set Clock Source to Apogee FireWire (xxxx) Ext Plug5.
2 On the Apogee host interface front panel, set the clock source to the desired clock source (such
as word clock); (on a Rosetta 200 or 800, set Sample Rate to EXT and Sync to the desired clock
source).
General Notes
When power cycling an Apogee host interface connected to a computer via AMBus FireWire, it is es-
sential to allow the operating system sufcient time to rst “de-mount” the host interface and subse-
quently “re-mount” it. With the Audio MIDI Setup window open:
1 Power down the host interface.
2 Wait until the “Apogee FireWire” option is no longer preset under Default Input and Default
Output.
3 Power up the unit; upon power up, “Apogee FireWire” should become once again available
under Default Input and Default Output.