Lavry DA2002 Operation Manual - page 8
8
Note: changing between Crystall lock and normal lock requires a signal to be present at the unit input.
by blinking the appropriate status light periodically. This mode setting is retained when power is removed.
CrystalLock™
, press and hold the
POLARITY
button again. The unit indicates wider lock (varispeed) mode
To normal (wider range) lock, press and hold the
POLARITY
button for 1.5 seconds. To return to
interference with signal reconstruction.
appropriate adjustments. The adjustments are done with sub pico-second resolution, to insure minimum
accuracy measurement compares the average input frequency to the oscillator frequency and makes the
data from the memory to the DAC disregarding any jitter in the input frequency. A proprietary fast-lock high-
crystal oscillator and a short buffer memory for temporary storage of the incoming data. The DSP transfers the
The DA2002
eliminates jitter
in the incoming data stream by use
CrystalLock™,
a DSP controlled pullable
CrystalLock™ and Wide lock
Inverting while in balanced operation swaps pin 2 and pin 3 of the XLR connector.
Inverting while in unbalanced operation impacts signal polarity on pin 2 of the XLR connector.
Inverting while in unbalanced operation impacts signal polarity on the IEC center conductor.
a lit INVERT lamp.
The normal polarity is set to pin 3 hot. To invert, press the
POLARITY
switch. Signal inversion is indicated by
Polarity inversion
found in other DACs.
that found in other DACs but the sound is not compromised. The spike due to power off is comparable to that
its output stage, thus disabling the drive capability during turn on. The DA2002 turn on spike may be higher then
with relay contacts. The unit deals with the turn on spike by incorporating very slow tracking power supplies for
proper operating conditions). The DA2002 contains no relays, in order to avoid signal degradation associated
Most DACs contains relays for the purpose of muting the output during turn on (allowing the DAC to settle to
indicated by the input select lamps if in auto select mode.
(44.1, 48, 88.2 or 96KHz). When all inputs are inactive, the unit steps through the input ports continuously as
The DA2002 figures out the incoming sample rate for the selected input and displays the incoming frequency
4. The unit finds the first active input and converts digital audio to analog sound.
minutes. During calibration, the unit blinks the two lower status lamps (88.2 and 96 light emitting diodes).
3. When set temperature is reached, the unit goes into self-calibration mode. The calibration time may take a few
blinks the two upper status lamps (44.1 and 48 light emitting diodes).
time depends on the initial temperature and may take up to 5 minutes for a cold unit. During warm-up, the unit
2. Warm-up: An internal oven heats up the temperature-sensitive devices to a set temperature. The warm-up
1. The unit goes into mute mode.
When applying AC power to the unit, the following sequence of events takes place:
Turn-On sequence
DA2002
Operations Manual