Tech Lowdown

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8. BNC%digital%input%
Let’s& say& that& you& own& a& high-end& transport,& but& its& BNC& output& is& audibly& better& than&
everything&else.&Luckily&Pro&iDSD&has&got&you&covered&as&it&has&a&BNC&input.&What’s&more&it’s&
multifunctional.&Read&on&for&further&details…&
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CLOCK%SYSTEM%
You& might& have& noticed& that& Pro& iDSD’s& rear& panel& is& equipped& with& not& one& but& two& BNC&
connectors&and&a&small&selector&in-between.&Let’s&explain&why.&&
The&BNC&connector&on&the&left&is&multifunctional.&While&it&can&be&a&classic&BNC&digital&input,&it&
can& also& be& used& to& sync& to& an& external& Atomic& Clock& (Stanford& Research’s& PRS-10,& for&
example),&a&Digital&Audio&Reference&Signal&(DARS)&according&to&AES-11& standard&and&the&iDSD&
Pro&clock&link&(10MHz).&
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Using&the&clock&out&a&Pro&iDSD&can&act&as&DARS&or&10MHz&clock&master&while,&using&the&clock&
input,&an&iDSD&Pro& can&be&slaved&to&a&standalone&clock&or&another&iDSD&Pro.&If&using&the&iDSD&
Pro&10MHz&clock&link,&all&iDSD&Pro&in&the&system&should&be&connected&in&a˚&this&will&not&
only&synchronize&all&units,&but&it&will&also&lower&clock&jitter&further.&
Once&both&products& are&connected,&all&digital&data&will&be&based&on&the&clock&inside&the&clock&
source&and&not&the&one&inside&Pro&iDSD.&In&order&for&this&feature&to&work,&both&machines&are&
synchronized& via& two& BNC& connections;& BNC& Sync& In& (clock& input)& and& BNC& Sync& Out& (clock&
output).&&