PicoQuant MultiHarp 150 - Multiharp 160 - Connectors for the Extension Units

PicoQuantGmbH MultiHarpSoftwareV.3.1.0.0
PPS INacceptsthe“pulsepersecond”signalofe.g.,GPSreceivers.Incombinationwiththe10MHzclockand
thetimecodetransmittedbytheGPSreceiveritispossibletosynchronizetheMultiHarpwithclockandtime
fromGPS.ThiscanbeusedtosynchronizetwoormoreMultiHarptoGPSandoneanother.Theaccuracyof
suchasynchronizationdependsonthatofGPSandthequalityofthereceiver.Itistypicallyontheorderof
sometensofns.Thebenefitisremotesynchronizationoverlargedistances.Ifbetteraccuracyisrequired,con-
siderWhiteRabbitinstead.
TheMultiHarp160alsohasdedicatedconnectorsatthebackfortheextensionunitsandtheexternalFPGAin-
terface.TheseareSamtecERI8/ERCserieslatchingcompoundconnectorsexplainedinthefollowingdedicated
sections.
8.3.3. MultiHarp 160 - Connectors for the Extension Units
TheMultiHarp160ismodularbydesign.Uptothreeextensionunitscanbeaddedontopofthebaseunitinor-
dertoprovidemoreinputchannels.Theextensionunitsmustbestackedonthemainunitinascendingorder,
i.e.firstX1,thenX2andfinallyX3.
TheextensionconnectorsarelabeledE1,E2,andE3onthebaseunitandjustEontheextensionunits.Each
extensionunitshipswithadedicatedcable(SamtecEPLSP)foritsconnectiontothebaseunit.Thefigurebe-
lowshowshowthecorrespondingconnectionsmustbemade.
ThededicatedSamtecEPLSPcables(orange)mustthenbeconnectedatthebackasshown,startingatcon-
nectorE1forthefirstextensionunit(shortestcable),continuinguptoE3forthelastextensionunit(longestca-
ble).Other(cross-)connectionsarenotallowed.Ifthemaximumof3extensionunitsisnotexhaustedthenthe
correspondingsocketsremainunconnected.Theseconnectionsmustbemadebeforethedeviceisswitchedon
andmustnotbeconnectedordisconnectedwhilethedeviceispoweredon.
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