Specifications

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5.6 AutomationInterface
TheJSD100includesthetraditionalparallelautomationinterfaceplusRS232andEthernet.
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ParallelInterface
Pins1through10oftheDB25Fautomationconnectorare“control”pinsthatacceptcontactclosureoropen
collectorpulsestogroundtoselectformats.Onaformatchange,thecorrespondingpin
isalsopulsedlow
allowingthisinterfacetodriveotherequipment.Pulsingpin11lowtogglesthemutestate.Pins14through
24are“status”pins.Oneofthepins14through23ispulledlowcontinuouslybytheJSD100toindicatethe
selectedformat.ThesepinscoulddriveLEDswitha470ohmseriesresistortoprovidearemoteformat
indication.TheJSD100pullspin24lowwhenthesystemismuted.Pins1through11areinternallypulledup
to+8.4V.Theyeachsource400uAwhengrounded.Apinneedstobepulledbelow2.6Vfor10msormorefor
theJSD100torecognizeitaslow.Onaformatchange,theJSD100pullstheappropriatepinlowfor500ms.
+5Vat100mAisavailableonpin13todriveexternalLEDsorrelays.Theindividualcontrolandstatusoutputs
cansinkupto150mAwith
anopencircuitvoltageof+12VDCforinductiveloadslikerelaysor+24Vfornon
inductiveloads(indicatorlamps,etc.).Pin12isthe“automationreturn.”Usethisasthelowsideofswitches
andindicatorsinsteadofusingchassisground.Itisgroundthrougha10ohmresistortolimitgroundloop
current.TheUSLsuppliedferriteblockshouldbeclippedontothecablesadjacenttotheconnectorsto
complywithFCCandCEemissionrequirements.

Pin Description
1 Control1.Pulselowtoselectformat1(COAX1).Pulseslowwhenformat1selected.
2 Control2.Pulselowtoselectformat2(COAX2).Pulseslowwhenformat2selected.
3 Control3.Pulselowtoselectformat3(TOSLINK).Pulseslowwhenformat3selected.
4 Control4.Pulselowtoselectformat4(16ChannelDigital).Pulseslowwhenformat4selected.
5 Control5.Pulselowtoselectformat5(User1).Pulseslowwhenformat5selected.
6 Control6.Pulselowtoselectformat6(User2).Pulseslowwhenformat6selected.
7 Control7.Pulselowtoselectformat7(8ChannelAnalog).Pulseslowwhenformat7selected.
8 Control8.Pulselowtoselectformat8(Non/Sync).Pulseslowwhenformat8selected.
9 Control9.Pulselowtoselectformat9(AUX).Pulseslowwhenformat9selected.
10 Control10.Pulselowtoselectformat10(MIC).Pulseslowwhenformat10selected.
11 Mute.Pulselowtotogglethemutestateofthesystem.