Input Selection - Lake People ADC F444 Bedienungsanleitung

THE DIGITAL to ANALOG CONVERTER MODULE
HINT:
DAC F466 may contain one or two D/A
modules. The modules may work totally inde-
pendendly from each other as they only share
the common power supply.
THE DIGITAL INPUTS
Two digital inputs are situated on the rear
panel and marked to their function.
On both inputs professional or consumer
coded digital data with up to 24 audio bits and
a sample rate of max. 210 kHz are accepted.
- The balanced input is equipped with an
XLR type connector and corresponds to
AES 3/11, transformer balanced, impe-
dance 110 ohms.
- The coaxial input is equipped with a cinch
connector and corresponds to IEC 958,
unbalanced, impedance 75 ohms.
The input sensitivity is 200 mV at Tnom/2.
HINT:
The level on the unbalanced input complies
with AES-id regulations (1 Vss).
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INPUT SELECTION

With the "INPUT" button on the frontpanel one
of two inputs may be selected. The active input
is signalized by the illuminated "BAL" or
"COAX" LED.
A valid input signal is displayed by the green
"LOCK" LED.
A unvalid input signal or a signal with a sample
rate 28 > Fs > 210 kHz is displayed by the red
"ERRor" LED.
If the input signal contains the emphasis flag,
the yellow "EMPH" LED is lit.
If the input signal contains the professional
flag, the yellow "PRO" LED is lit.
HINT:
A digital input signal with emphasis (the yellow
"EMPHASIS"-LED is lit) is treated by a digital
deemphasis circuit inside the converter chip -
in a correct mannor only with a sample rate of
44.1 kHz.
This is not a big problem, because emphasis
signals normally appear only with the "CD
frequency" 44.1 kHz.
When the sample rate of the emphasis signal
is different to 44.1 kHz, wrong conversion of
higher frequency analog signals has to be
calculated.
(if present, 1 or 2 modules)