M•AD-824
Quick-Start Guide
3
- For External Lock, use the
NARROW/WIDE
switch to choose which type of lock mode is
best suited to accommodate the clock source:
Choose
NARROW
to reduce the sampling frequency input range to lock to signals
/-150ppm (parts per million) around a fixed rate (44.1, 48, 88 or 96kHz).
Narrow lock operation provides improved jitter rejection when operating with a
known fixed frequency.
This can sound better than using Wide mode for these four
sample frequencies.
•When in
NARROW
lock, the appropriate frequency indicator lamp shows the
selected output rate. The sample frequency switch settings and 2X switch settings
must match the external clock frequency.
•The “Lock” lamp illuminates when lock is achieved.
Choose
WIDE
for applications including most normal vari-speed operations. It
allows the sample rate to run automatically between 38-51 kHz, or for double speed
operation between 76-102 kHz.
Select
WIDE
and
LOW
to accommodate a clock range of 42-54 kHz.
•The top two frequency lamps will light.
Select
WIDE
and
HIGH
to accommodate a clock range of 84-100 kHz.
•The bottom two frequency lamps will light.
5.) Using the “SET/SELECT” Switch on the M•AD-824
The SET/SELECT switch is intuitive and actually far easier to use than to describe!
Use it to
enter (or exit) the Program Mode
by holding the switch either up or down for 3 seconds.
There are individual functions (Saturation Modes, Reference, & Peak Hold) and multiple
parameter functions (Wordlength, & Dither/ABC).
SELECT- click switch “Down”
to
moves the indicator from one function to the next. In all
cases except REFERENCE mode, toggling the switch “Down”
both
enables the indicated
parameter
and
selects the next function.
SET-click switch “Up”
to
toggle individual functions “On” and “Off”. For individual
functions, a constantly illuminated lamp means “On” and blinking lamp means “Off.” For
multiple parameters,
SET
moves the indicator sequentially through each parameter. In
multiple parameters, possible choices are indicated by a blinking lamp, and the current
selection is indicated by a constantly illuminated lamp.
To move through all functions, continue toggling
SELECT
. The lamps for the parameters or
function will illuminate to indicate their status as you toggle through each function
,
then
move on to the next function.
To
exit the program mode at any time,
hold the switch either UP or DOWN for 3 seconds.
If you don’t use the switch for 10 seconds, the unit will automatically exit the program mode;
except in Reference Mode, which will remain active until you hold the switch down (Select).
