Universal Audio UAD Manual download pdf (Page 13)

Apollo FireWire Hardware Manual Front Panel

Front Panel (continued)

(13) Power Indicator (UA Logo)

The Universal Audio logo illuminates when the external power supply is properly connected to the AC outlet and

the power input on the rear of the unit, and the Power switch (#22) is in the up position.

Clock LEDs

The Internal (“INT”) and External (“EXT”) Clock LEDs indicate the source and status of the system master clock.

The clock source is specified within the Console application.

(14) Internal Clock

When Apollo is using its internal clock as the master clock source, the Internal Clock LED is solid green. When

set to external clock, this LED is not illuminated.

(15) External Clock

When Apollo is set to use an external clock as the master clock source and a valid clock signal is detected at

the specified port, the External Clock LED is solid green. Apollo can be configured to use an external clock from

the Word Clock, S/PDIF, or ADAT inputs. When set to internal clock, this LED is not illuminated.

If the External Clock LED is red, Apollo is configured to use an external clock but it cannot lock to the clock

source and/or sample rate specified in the Console application.

Important: Apollo's sample rate must be manually set (in the Console application) to match the incoming

clock's sample rate.

(16) UAD Link LED

The UAD Link LED is a system status indicator. The LED is solid green when Apollo is connected to (and properly

communicating with) the host computer system via FireWire or Thunderbolt, and off when not connected. When

blinking red/green, the UAD drivers are not properly loaded. When solid red, the LED indicates an error state.

The Apollo software must be properly installed and configured on the host computer to enable the UAD Link,

and the UAD Link must be active to use Apollo with any/all computer operations. The only time the link is not

required is when Apollo is used “standalone” without a computer.

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Universal Audio UAD Manual Page 13