Product Manual

FLIRDM92USERGUIDEDocumentIdentifier:DM92‐en‐US_AB

5.11.5Frequencymode(ACVandACAonly)

InFrequencymode,thefrequencyisdisplayedinthemaindisplayandtheperiodisdisplayed

inthesecondarydisplay.FrequencymodeisavailablewhenmeasuringACvoltageorcurrent.



1. Select andenableFrequencymodeasdescribedinsection5.11.1Selectingthemode.



5.11.6Relativemode

In Relative mode, the difference between the current reading and a stored reference value is

displayed in the main display. The reference value is displayed in the secondary display.

1. Select andenableRelativemodeasdescribedinsection5.11.1Selectingthemode.



5.11.7dBmMode(ACVonly)

Thedecibel(dB)isalogarithmicunitthatexpressesthemagnitudeofaphysicalquantity

relativetoaspecifiedorimpliedreferencelevel.IndBmmode,themeterdisplaysAC

voltagemeasurementsindBordBmonthesecondarydisplay.



dBanddBmaredefinedasfollows:

 dB=20

log(V

/1).

 dBm=20log(V

/0.7746).



1. Select andenabledBmmodeasdescribedinsection5.11.1,Selectingthemode.

2. Pressthethe

or buttontotogglebetweenthedisplayofdBanddBm.



5.11.8ManualDataRecordingMode

Themeterhas99memorylocationsforthestorageofmeasurementdata.

1. Select andenableManualDataRecordingmode

asdescribedinsection5.11.1

Selectingthemode.

2. Pressthe

or buttontocyclethroughthemodeoptions:SAVE,LOAD,andCLEAR

shownonthesecondarydisplay.

3. Pressthe

buttontoactivatethedisplayedoption:

 SAVE:Thedataonthemaindisplayissavedtoamemorylocationshownbythe

indicatorintheupperpartofthedisplay.

 LOAD:Thedatastoredinthememorylocationshownbythe indicatoris

displayed.Usethe

or buttontochangethememorylocation.Pressthe

buttontoexittheloadfunction.

 CLEAR:Thedatainallmemorylocationsiserased.

