PicoQuant MultiHarp 150 - Hardware Technical Data; Specifications

PicoQuantGmbH MultiHarpSoftwareV.3.1.0.0
8.3. Hardware Technical Data
8.3.1. Specifications
Allinformationgivenhereisreliabletoourbestknowledge.However,noresponsibilityisassumedforpossible
inaccuraciesoromissions.Specificationsandexternalappearancearesubjecttochangewithoutnotice.
Input Channels and Sync
NumberofInputChannels MultiHarp150N
4or8
MultiHarp150P
4,8,or16
MultiHarp160
16,32,48,or64
Triggerprinciple
edgetrigger,softwareadjustable
Triggeredge risingorfalling,softwareadjustable
Inputimpedance 50Ω
Inputvoltageoperatingrange(pulsepeak)
optimum:
−1200…1200mV
abs.Amplitude150..300mV
Inputvoltagemax.range(damagelevel) ±2500mV
Triggerleveladjust
−1200…1200mV
Resolution<3mV
Inputtriggerhysteresis ca.3mV(default)or35mV(settable)
Inputpulsewidth ≥0.4ns
Inputpulserise⁄falltime ≤20ns
Markerandcontrolinputs standardTTL,>2kΩDCload
Time to Digital Converters
MultiHarp150N MultiHarp150P MultiHarp160
Baseresolution(min.timebinwidth) 80ps 5ps 5ps
Singlemeasurementtiminguncertainty(rms)* <60ps <32ps <32ps
Start-stoptiminguncertainty(rms)*
<85ps
+10
−8
·Δt
<45ps
+10
−8
·Δt
<45ps
+10
−8
·Δt
Differentialnon–linearity <10%p.p.
<1%rms
Deadtime <650ps
Peakcountrate
1.5·10
9
cps
sustainableforburstsof2048events
Max.sustainedcountrate
78·10
6
cps
Max.syncratewithoutdivider 78MHz
Max.syncratewithdivider 1200MHz
Adjustabledelayrangeforeachinput
delayresolution=baseresolution
±100ns
*Inordertodeterminethetiminguncertaintyor"jitter"itisnecessarytorepeatedlymeasureatimedifferenceandtocalculatethe
standarddeviation(rmserror)ofthesemeasurements.Thisisdonebysplittinganelectricalsignalfromapulsegeneratorandfeedingthe
twosignalseachtoaseparateinputchannel.Thedifferencesofthemeasuredpulsearrivaltimesarethencalculatedalongwiththe
correspondingstandarddeviation.Thislattervalueisthermsjitterortiminguncertaintyofstart-stopmeasurements.However,calculating
suchtimedifferencesrequirestwomeasurements.Thesebothhaveasmallrandomjitterandatermthatisdependentonthetime
differencebetweenthetwosignalsbecauseoverlongerspansthecrystalclockjitterbecomesnoticeable.Forshorttermmeasurements
on  a  sub-microsecond  scale,  as  in most  TCSPC  applications,  the  latter  is  typically  negligible. The  timing  precision  of  a  single
measurement,accordingtoerrorpropagationlaws,isobtainedbydividingthestart-stoptiminguncertaintyby√2.Wespecifythissingle
measurementrmserrorhereforcomparisonwithotherproducts.
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