Olympus EPOCH 600 - Gate Setup

DMTA‐10007‐01EN[U8778365],Rev. B,June2010
BasicOperation37
• Zoom:Setsthedisplayrangetobeginatthestartpositionoftheselectedgate,and
tostopattheendpositionoftheselectedgate(gatestart+gatewidth).
PressingtheZoom[P<n>]parameterkeyrepeatedlytogglesthezoomonandoff.
• Start:Adjuststhestartpositionoftheselectedgate.
• Width:Adjuststhewidthoftheselectedgate.
• Level:Adjuststhescreenheightoftheselectedgate(from3%to95 %).
• Alarm:Setsthealarmcondition
oftheselectedgate(Off, Positive,Negative,Min
Depth)
• MinDepth:VisibleonlywhentheAlarmparameterissettoMinDepth.Adjusts
thethresholdintime‐of‐flightunitsthattriggersaMinDepthalarmcondition.
• Status:Turnsthegateonoroff(effectsmeasurements,
alarms,andvisibilityof
gateonscreen).
2.3.3 Gate Setup
TheGateSetupmenuallowsmoreadvancedsettingsfor eachgatetobeadjusted
priortoinspection.Thesesettingsarevisibleabovethe[P<n>]parameterkeys.The
followinggatesettingsareavailableintheGateSetupmenu:
• G1Mode:Setsthemeasurementtriggermodeofgate 1(Peak,1stPeak,
Edge)
• G1RF:Setsthepolarityofthegate1whentheinstrumentisoperatinginRF
rectification(Dual,Positive,Negative)
• G1%Amp:UsedonlyinEdgemode.Setsthemeasurementtriggerforthe
%amplitudedigitalmeasurementofgate 1wheninEdgedetectionmode(High
Peak,
1stPeak).
• G2Mode/G2RF/G2%Amp:Samesettings as above,butforgate 2only.
• G2Tracks:Togglestrackingmodeofgate 2withrespecttogate 1onoroff.
TrackingONisconsideredtrueecho‐to‐echomeasurementmode.
Gatemeasurementmodes,selectedbyG1ModeorG2Mode,determinewhich
gated
echoorechoparameterstriggersadigitalmeasurement.
• Peak:Acquiresmeasurementreadingsbasedonthehighestpeakwithinthegated
region(doesnothavetocrossthegatethreshold)[seeFigure 2‐11onpage 38].