Model da924 high resolution digital to analog converter operations manual lavry engineering, inc 824 post avenue seattle, wa 98104 (206) 381-5891 http://www.Lavryengineering.Com/ e-mail: info@lavryengineering.Com revision 1.1 march 1998 e lavry engineering i i.
Da924 operations manual 2 copyright ©1998 by lavry engineering, inc. All rights reserved. Acoustic bit correction® and lavry engineering ® are registered trademarks of lavry engineering , inc. Crystallock™ is a trademark of lavry engineering , inc. Internet: info@ lavryengineering .Com http:// www.L...
Operations manual da924 3 t a b l e o f c o n t e n t s limited warranty.................................................................................................. 2 introduction ............................................................................................................ 4 par...
Da924 operations manual 4 introduction the da924 converts incoming digital inputs to 24 bit analog audio signals. The combination of excellent linearity, small quantization steps, fast and accurate response and low noise performance enables reproduction of the finest details. The da924 accommodates ...
Operations manual da924 5 p a r t i : op e r a t i n g i n s t r u c t i o n s operation of the model da924 digital to analog converter requires the use of two push button switches located on the front panel. Polarity inverts the absolute polarity of the signal. Input select controls selection of di...
Da924 operations manual 6 analog outputs the left output and right output xlr signals are factory set to provide balanced analog signals (signal between pin 2 and pin 3 of the xlr connectors). Operation in unbalanced mode (signal at pin 2 and ground at pin 3) is possible by changing the internal jum...
Operations manual da924 7 1. The unit goes into mute mode. 2. Warm-up: an internal oven heats up the temperature-sensitive devices to a set temperature. The warm-up time depends on the initial temperature and may take up to 5 minutes for a cold unit. During warm-up, the unit blinks the two upper sta...
Da924 operations manual 8 using varispeed, thus its use should be restricted for sample rates outside of the narrow lock range. Some multi-channel uses of the da924 may require varispeed for synchronization. To enable wide lock, press and hold the polarity button for 1.5 seconds. To return to crysta...
Operations manual da924 9 p a r t i i : t h e o r y of o p e r a t i o n the simplified block diagram (figure 1), shows the basic building blocks. Oven control the pcm dac is constructed of custom made laser trimmed thin film resistor networks; yet any resistor is subject to short term drift due to ...
Da924 operations manual 10 cycle consists of reading and adjusting of all the nodes. The processor repeats the calibration cycle numerous times until all the nodes are set properly. Though nodes interaction exist during the adjustment process, the overall network is guaranteed to converge on a solut...
Operations manual da924 11 frequency jitter from the clock signal. The need to keep enough bandwidth for locking to and tracking the incoming data translates to zero rejection of low frequency jitter content (typically hundreds of hz of zero rejection bandwidth). While some of the jitter content is ...
Da924 operations manual 12 the front panel is gold plated (24 karat gold). Use a soft cloth (and plain water, if necessary) to clean finger prints..
Operations manual da924 13 p a r t i i i : s p e c i f i c a t i o n s noise -110dbfs rms, 130dbfs peak spurious response distortion 1khz tone at -1dbfs: .0009%fs peak harmonic amplitude 1khz tone at -60dbfs: .00009%fs peak harmonic amplitude 10khz tone at -1dbfs: .0009%fs peak harmonic amplitude 10...
