Vistek V1636 24-bit Audio Digital
To Analog Converter
Issue 4.0
9
3.1.2
Sampling Rate Indicators
Because the sampling rates of input AES A and B to the V1636 DAC may be different, the
inputs are asynchronously converted to an internal sample rate of 48kHz which is not user
adjustable. The 48kHz LED will therefore always be lit when the card is operating.
3.1.3
Input Status Indicators
The A I/P and B I/P LEDs respectively indicate the status of the AES inputs A and B. If the
AES input is valid, the corresponding LED is lit, otherwise the LED is off.
3.1.4
Character Display
Used for displaying parameters which have numeric or alphanumeric values
3.1.5
Parameter Selection Controls
These are used for selection of, and adjustment of, operating parameters when the
REM
/
LOCAL
switch is set to
LOCAL
.
3.2
Adjustment of Operating Parameters
3.2.1
General
The V1636 has two
pages
(
Page 0
and
Page 1
)
of panel adjustment modes, each page
allows adjustment of one or more
parameters.
Conceptually the procedure is not unlike
setting a digital alarm clock or watch.
·
Panel adjustment pages can only be invoked if the
REM
/
LOCAL
switch on the panel
is set to
LOCAL
.
·
Pressing the
SELECT
button on its own invokes the panel adjustment modes of
Page 0
·
Pressing the
SELECT
button while holding in the
p
button invokes the panel
adjustment modes of Page 1. In other words, the
p
button behaves like a
‘SHIFT’ key on a typewriter when selecting pages of adjustment modes. By this
analogy, Page 0 corresponds to lower case and
Page 1
corresponds to upper
case letters on a typewriter.
·
Once any panel adjustment page has been selected, repeated pressing of the
SELECT
button allows the user to scroll through the various parameters available
on the page. A row of LEDs above the
SELECT
button indicates which
parameter
is presently selected for adjustment.
·
For any given parameter selected for adjustment, the value of the parameter may
be increased or decreased by pressing the
p
or
q
keys respectively. The
value
of the parameter is indicated either on the character display or the respective sets
of LEDs above the character display.