HASSEB MASTERCLOCK MINI User manual

October
2,2017
HASSEBMASTERCLOCKMINI,SLAVECLOCKIMPULSER
INSTRUCTIONSMANUALVERSION1.2
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HASSEB M ASTER C LOCK
MINI
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hassebMasterClock
mini
isaneasytousebatteryoperatedmasterclocktodrive
slaveclocksusedforexampleininstitutionslikefactories,offices,andschools.
Thedevicesends24voltsvoltagepulseseveryminute,every30seconds,or
everysecondtodrivetheclock.ThedeviceutilizessimpleWindowssoftwareto
controlthesettingsandfinetunethecrystal.
INSTALLATION
Thedevicehasatwowireconnectortoattachtheslaveclocktothedevice.
Dependingonthesettings,unipolarorbipolarpulsesaresentouteveryminute
orevery30secondstodrivetheclock.
Manyslaveclockshavethreewiresinsteadoftwo,todrivethesolenoidofthe
hour,andcanbejoinedwithoneortheotherofthewires.Inmostcaseshasseb
MasterClock
mini
iscapabletodrivealsothreewireslaveclocks.However,itis
yourresponsibilitytochecktheconnectionofyourparticulardevice!
ADJUSTINGTIME
Thetimecanbeadjustedbypressingthepushbutton.Thedevicewillsenda
singlepulseeverytimeyoupressthebutton.Ifyoukeepthebuttonpressed,the
devicesendssuccessivepulsesattheintervaloftwopulselengthtimes.
CONTROLPROGRAM
Bydefaultthedevicewillsendabipolarpulseeveryminutewithapulselength
of500ms.Ifthedefaultsettingsarenotsuitableforyourslaveclock,aneasyto
useWindowsprogramMasterClock.execanbeusedtoconfigurethe
MasterClock
mini
device.TheMasterClock
mini
isastand‐alonedevice,thustheUSB
cableneedstobeconnectedonlywhenconfiguringthedevice.
TheMasterClock
mini
isvisibletothehostcomputerasahumaninterfacedevice,
suchlikemouseorkeyboard,andrequiresnodrivers.
Duetothesoftware,whichisoptimizedforextremelylowstandbycurrent
consumption,itisimportanttoconnecttheUSBcablebetweenthe
MasterClock
mini
deviceandcomputerbeforepoweringthedevice.IftheUSB
cableisconnectedaftertheMasterClock
mini
hasbooted,Windowsmaynot
recognizethedevice.
AfterstartingtheMasterClock.exesoftware“Devicefound.”textshouldbe
visibleonthebottomleftcornerofthesoftware.Ifyouseeatext“Devicenot
found.Pleaserestarttheprogram.”checkthebatteryconnection,recheckthe
deviceUSBconnectionandrestarttheprogram.

October
2,2017
HASSEBMASTERCLOCKMINI,SLAVECLOCKIMPULSER
INSTRUCTIONSMANUALVERSION1.2




Figure1.TheMasterClock
mini
deviceisconfiguredusingasimpleWindowsprogram.
Duetothemanufacturingprocessandenvironmentalconditions,suchas
temperatureandrelativehumidity,thefrequencyofthecrystalofthe
MasterClock
mini
devicemayvary.Thecontrolsoftwarefeaturesafinetuning
functiontocalibratethecrystal.Thecalibrationiscarriedoutbysettingtheerror
insecondswithinamonth.
Themanualdrivefunctioncanbeusedtoadjustthetimeoftheclock.Byusing
themanualdrivefunctionofthecontrolsoftware,aselectableamountof
successivepulsescanbesenttothedevice.Thispreventsthemanualholddown
ofthepushbuttonswitchwhenadjustingthetime.
STATUSLED
ThereisanLEDtoindicatethestatusofthedevice.TheLEDwilltogglewhen
24Vpulseissenttotheslaveclockline.ThetogglingLEDwillalsoblinkfast,
whensettingsaresentthroughtheUSBport.Tosaveenergyandextendthe
batterylifetime,theLEDcanbedisabledusingthecontrolsoftware.
OPTIMIZINGTHEPOWERCONSUMPTION
Yourslaveclockisthemainpartusingthepowerofthebattery.Thequiescent
currentconsumptionoftheMasterClock
mini
deviceisintherangeofmicro
amperesandthusnegligiblecomparedtothepowerconsumptionoftheslave
clock.
Toreducethepowerconsumptionofthedeviceandthusextendingthebattery
lifetime,itisimportanttoadjustthepulselengthasshortaspossible.Itis
recommendedtousetheshortestpulselengthusingwhichtheslaveclockisstill
operational.
ThebatterylifetimecanbealsoslightlyextendedbydisablingtheLED,indicating
thepulsestatus.ThiscanbedoneusingtheWindowscontrolsoftware.

October
2,2017
HASSEBMASTERCLOCKMINI,SLAVECLOCKIMPULSER
INSTRUCTIONSMANUALVERSION1.2


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Specifications
Inputvoltage6‐12VDC
Outputvoltage±24V
Maximumoutputcurrent50mA
Operatingtemperature0–50C
Dimensions45mmx45mmx10mm
Weight30g
SupportedoperatingsystemsWindows7/8/10
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