Graham-Patten SoundPals ADC-24, Руководство пользователя

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ADC-24 User Guide
Page 5
ADC-24 Installation
This section provides instructions for connecting power, analog inputs, AES reference, and digital
outputs.
Connecting Power
Plug a 6 VDC power supply into the appropriate voltage outlet for your specific country , and
connect the end of the cord into the ADC-24 jack marked +6V . Secure the locking ring finger
tight. The green LED below the jack lights when power is applied.
Connecting Inputs
Connect left and right channel analog inputs to the two rear connectors marked LEFT IN and
RIGHT IN . Balanced sources are connected to pins 2 (
+
) and 3 (-) with pin 1 and the shell
grounded. Unbalanced sources are connected to pin 2 with pins 1, 3 and the shell grounded.
Refer to the “
ADC-24 Operation ” section for instructions on correctly adjusting input level.
Connecting AES Reference
The ADC-24 can be synchronized to an alternate output frequency (from the default frequency)
by connecting a valid AES reference signal to the
AES REF BNC connector. The EXT REF LED
on the front panel lights when a valid reference signal is applied.
To phase lock the unit’s sample frequency to a reference, connect a reference signal (between 30
kHz and 50 kHz sampling rate) to the
AES REF BNC connector. The AES signal output will now
phase-lock to the incoming reference — independent of the ADC’s default reference frequency.
Note that the AES REF input is normally terminated internally with 75
Ω
. When it is necessary to
loop reference to several SoundPals, the signal must be terminated only once, and always at the
last unit in the chain. Refer to the “
ADC-24 Internal Jumpers ” section for information on
changing the input from terminating to bridging.
Connecting Outputs
Connect the digital audio output from one of the AES OUT connectors on the front or rear panel,
and route it to the input of the desired destination device. Both AES3 and AES3id outputs may
be used simultaneously.