14 Inputs / Outputs
Page 2
14.2.Logicalinputs
Thenon-connectedinputsmatchthefollowingcircuit:
Thenon-connectedinputshavea0V-potential(level0).
Numberoflogicalchannels:from1to16
TTLlevel3.3V(protecteduntil24V)
Tocreatearisingedge,youonlyhavetoputaconnectionbetweentheinputandthe12Vpower
outputoftheconnector.
Similarly,tocreateafallingedge,youonlyhavetotakeawaythisconnection.
YoucanalsouseaTTL3.3Voutput signal.
13.1.1.Use
Plottinganddisplay:
Thesechannelsareplottedontheleftorright sideifthepaper sheetaccordingtotheselected
pattern.
Theyaredisplayedatthetoporthebottomofthe screenaccordingtotheselectedposition.
Theyarenumberedfromtherighttotheleft.
Eachofthesechannelsareplottedbetweentwodottedlineswhichrepresentthelimits.
Theheightofthereticulesisminimum2mmfortheplotting.
Externalclock:
Youcanusethechannel16(pin#21ontheconnector)forthepaperfeedinDirectmodeorto
synchronisethesamplingofthechannelsintheothermodes(Memory,GoNogoandFile).
InDirectmode, Thepaperfeedismadethenwitha1/16mmstepbythepositiveoverrunofthe
TTLlogicalthresholdofthechannel16.
Themaximumfrequencyofthe signalis160Hz,whichcorrespondswitha10mm/spaperadvance.
Incaseof Text writingofthemeasures,thepaperfeedismadethesameway. Thetranscription
frequencyisthenlimitedto1Hz.
Intheothermodes,theacquisitioncanbemadeupto500kHz.
Triggering:
Youcanusetheexternalchannelstotriggertheplottingandtheacquisitions(beginorend).
Seechapter Trigger .