MGP DMC 2000 S User manual












Stand‐Alone/AutonomousOperation
5000HighlandsPkwySuite150Smyrna,GA.30082
770‐432‐2744www.mirion.com
User’sManual

DMC‐2000SeriesElectronicDosimeter
Document#15‐00079
,
Revision0
1


TableofContents


•Introduction
•Basics
‐PartsoftheDosimeter
‐ChangingtheBattery
‐PauseDisplayInformation
•Operation
‐Activation/Deactivation
‐ChangingAlarmSetPoints
•Troubleshooting
•GlossaryofTerms
•RMA/ServiceForm







2
















WARNING:DONOTLETTHEDMCBATTERYCOMPLETELYDISCHARGE.
THEDMCWILLNOTIFYYOUWHENTHEBATTERYNEEDSCHANGING.
LETTINGTHEBATTERYCOMPLETELYDISCHARGECANPOTENTIALLY
RESULTINFAULTERRORSREQUIRINGADDITONALHARDWARE(READER)
TORESET.



ATTENTIO
N
:USEONLYAPPROVEDBATTERIESINTHEDMC2000(see
page6).OTHERBATTERIESMAYRESULTINDAMAGETOTHEDEVICE.






3

PartsoftheDosimeter 

(for hands-free
communication)


* Not a Reset button. Do not insert pointed
objects (pen tip, screwdriver) as damage may
occur.








4


(for communication)

Do not remove any of the four case screws. There are no serviceable
parts inside the dosimeter. Removal will compromise waterproof and
EMI resistant characteristics and void any warranty.





5

ChangingtheBattery
NOTE:thebatteryontheDMC2000Sshouldbechangedwhenthe‘BALO’or‘DFBAT’warnings
aredisplayed.Waitinguntilthedosimeteriscompletelydeadcanresultinfaulterrors
requiringreaderhardwaretoclear.
1. Removetheclip.Usingasmallflatheadscrewdriverorsimilartool,gentlyliftupthe
tabatthetopoftheclipandslidethewholeclipoffthebackofthedosimeter.Onlya
slightamountofpressureisneeded.
2. Removethebatterycover.Usingeitheraprovidedbatterytoolorawatchcasewrench
orsimilartool,unscrewthebatterycover.
3. InsertaRenataCR2450NorToshiba2450battery(otherbrandshaveincorrectphysical
profilesandwillcauseshortsand/orpotentialdamagetothedevice,seeimageAfor
example)inthebatterycompartment,withthepositiveplatedown(flushagainstthe
speaker.SeeimageAforexample.)
A. 
B. 

4. Replacethebatterycover,tighteningittohand‐tightplusanadditional¼turnwiththe
batterytool.
5. Replacetheclip,slidingitintherailsonthebackofthedosimeteruntilitclicksandlocks
intoplace.
6


DisplayIndicationsinPause*Mode

Pressesof
theButton
DisplayIndicationDescription
0Pause:Dosimeteriseffectively‘off,’awaitingfurtheraction.
1Change:StartpointforputtingtheDMCin“Run”mode.
2Modif:Startpointformodifyingsetpointsandparameters.
3SerialNumberoftheDMC
4Reset:Indicateswhetherdoseisresetbetweenuses.
5CumulativeDosereceivedonlastuse.
6HighestDoseRatereceivedonlastuse.
7AmountoftimetheDMCwaslastinrunmode.
8Dosealarmthresholdsetting.
9Ratealarmthresholdsetting.
10Displayswhatsettingtheaudiblechirprateissetto.**
11IndicateswhethertheDMCisinautonomousmode.
12Externaldetector(unusedplaceholdervalue)
EXT

*NOTE:PAUSEModeintheDMC2000iseffectively“Off.”TheDosimeterisnevermeanttobe
completelypowereddown.
**0=Off,1=chirpevery10mrem,2=chirpevery1mrem,3=chirpevery0.1mrem,4=chirp
every8counts(pulses),5=chirpevery4pulses,6=chirpeverypulse.
NOTE:DMC2000XBandGNmodelshaveadditionaldisplaysandparametersforsecondary
channels.
7


ActivatingtheDMC2000(FromPausetoRunMode)

StepAction
1PressButtonOnce.Displaychangesfromtoo
2Waitforthedisplaytochangeto.
3Quicklypressbuttononce.
4Displaychangestospeakerbeeps,LEDflashes.
5
EXT
Dosimeterisactive,accumulatingdose.Displayshowsmeasurements.

DisplayIndicationsinRunMode
Pressesofthe
Button
DisplayIndicationDescription
0DisplayofDose(defaultdisplay)
1ChangestoDose/RateDisplay
2ReturnstoDoseDisplay

DeactivatingtheDMC‐2000(fromRuntoPauseMode)
StepAction
1DisplayreadsPressandholdbutton8‐10seconds.
2Withoutreleasingbutton,displaychangestoandthen.
3ReleaseButton.DisplaychangestoDMCbeeps,LEDflashes.
4Dosimeterisdeactivated(PauseMode).
EXT

8


ParameterModification
NOTE:Modifyingparametersandsetpointstakespracticeandpatience.Youmayencounterthedisplayreturning
toPAUSEduringamomentofinactivity.Followthestepsinthissectiontoreturntomodifyingtheparameters.
StepAction
1Startfrom.
2Pressbuttontwicepassingtogettowaitamoment.
3Whendisplaychangestopressbuttononce
4Modificationmodeaccessed.Pressbuttononceforserialnumber.
5Pressbuttononcemore,displayiswithaflashing“P.”
EXT

Theflashing“P”indicatesthatthedosimeterparametersarereadytobealtered.Thereare
threestepstothisprocess,eachrepresentedbyadifferentletter:
‐AflashingP:theparametertomodifycanbeselected.
‐Aflashingd:whichdigitoftheparametertochangecanbeselected.
‐AndaflashingI:thevalue,orincrement,oftheselecteddigitcannowbechanged.

Thestepsformodifyingalarmsetpointsareasfollows:
StepAction
1Completethestepsintheprevioussectionuntilthedisplayreads.
2Pressthebuttonrepeatedlyuntilyoureachtheparametertobeadjusted.
3Holddownthebuttonuntilthe‘P’changestoa‘d’.
4Pressthebuttonrepeatedlyuntilthecorrectdigittobechangedisselected.
5Holddownthebuttonuntilthe‘d’changedtoan‘I’.
6Pressthebuttonrepeatedlyuntilthedesiredvalueisreached.
7Holdbuttondownuntil‘I’changesbackto‘P’repeatstepsasneeded
9

8Wait10secondsforthechangestobesaved,DMCreturnstoPAUSE.

TroubleshootingandMaintenance

FaultMessages:

Display CauseCorrectiveAction




LowBattery(On)


Dosimeterisinrunmodeandthe
batteryisneardead.The“BALO0X”
displayindicatesthatthereare“X”
hoursofoperationaluseremaining,
(between1and9hours.)

•
Changethebatterybeforethe
DMClosespowercompletely.
•Verifythatprotectiveinsulatoris
installedunderthebattery.





LowBattery
(Off)

ThedosimeterisintheOFF orPAUS
E
mode,andthebatteryisneardead.The
batterywilldiecompletelywithin72
hoursiftheDMCremainsinthePAUSE
mode.

•
Changethebatterywithin72
hoursifpossible
Caution:Allowingthebatteryto
completelydischargemaycause
themicroprocessortolock
resultinginablankdisplayandred
LEDtobeconstantlyONwhen
installingaNEWbattery,orin
faultstatesrequiringadditional
hardware(Reader)toreset.





DefectiveBattery

Dosimeteriscompletelywithoutpower,
eitherfromacompletelydischarged
battery,acapacitorthatneedstobe
reset,orashortcircuitinthepower
supply.
•
Changethebattery
•Checkbatterygroundcontactwire
•Usetheprovidedresettool(see
explanationpage12).
•ContactMGPIforverificationof
deviceparameters.






DefectiveHistory

Problemintheintegrityofthehistorical
data.Thiscanoccurafterthebattery
hasbeenhandled(removedor
changed).

Missingbit/pointerinthehistogram

•
ContactMGPIforverificationof
deviceparameters.
•Requiresadditionalhardware
(Reader)toclear.











10






Display CauseCorrectiveAction




DefectiveCalibration

Lossofcalibrationfactordatastoredin
e2prom.
•
ContactMGPIforverificationof
deviceparameters.
•Requiresadditionalhardware
(Reader)toclear.





DefectiveDetector

Physical,internalproblemrelatedtothe
dosimeter’sdetectioncircuit;or
missing/incorrectparametersrelatedto
thedetectionalgorithm.

•
ContactMGPIforverificationof
deviceparameters.
•Requiresadditionalhardware
(Reader)toclear.





DefectiveE2PROM

Problemaccessingdatasavedin
E2PROMmemory
•
Removethebattery,letthe
dosimeterstoragecapacitor
dischargefor72hours,andthen
reinstallthebattery.
•Sourcecheck–iferrorremains,
dosimeterisbeyondrepair.





Defective
initialization

Internaldetectorcalibrationvalue
missingorcorrupted,usuallydueto
batterybeingallowedtodischarge
completelybeforebeingchanged.
•
ContactMGPIforverificationof
deviceparameters.
•Requiresadditionalhardware
(Reader)toclear.




DefectiveExternal
Detector


Externaldetectorcalibrationvalue
missingorcorrupted,usuallydueto
batterybeingallowedtodischarge
completelybeforebeingchanged.
•
ContactMGPIforverificationof
deviceparameters.
•Requiresadditionalhardware
(Reader)toclear.





DefectiveIntegrated
Circuit

Faultinthecomponentusedforthe
pulsecounting
•
Dosimeterbeyondrepairand/or
parameterscorrupted.
•ContactMGPIforverificationof
deviceparameters.
•Mayrequireadditionalhardware
(Reader)toclear.





BlankDisplay–Red
LEDON

RedLED“ON”withnodisplay
–
(sometimesnotedwheninstallinga
NEWbattery)‐Microprocessorishung
betweenpauseandrunonalowbattery
condition–typicallyresultingfrom
allowingthedosimeterbatteryto
dischargecompletely.
OR
Non‐authorizedbatteryinstalledcausing
batterytoshortouttoground

•
Removebattery,inspectbattery
compartmentfordamage(broken
ordamagedgroundcontact,
terminals,insulator).
•Resetusingthebatteryresettool
(Seepage12).



11



DosimeterResetToolOperation

Ifthebatteryisnotchangedwhileinthe“LoBat”modebeforeitiscompletelydischarged,the
DMCmightretainaslightchargeinthesupercapacitorandbenon‐responsivetoanewbattery.
Ifthisisthecase,youcanusetheDMCresettoolprovidedwithyourpurchase.Ifyoudonot
havetheresettoolhandy,leavingthebatteryoutoftheDMCfor3‐4dayswillalsosufficiently
dischargethecapacitortoacceptanewbattery.
First,openbatterycompartment(asindicatedonpage6)andremovethebattery.Then,
removetheorangeinsulator.Inserttheresettoolwiththe‘tongue’pointingintothecavity
underneaththetop‐leftquadrantofthethreadedbatteryring,betweenthesoldered
connectionandthethreadedring.

Levertheresettooldown.Thisshouldcausethetooltomakecontactwiththeappropriate
partoftheinternalboard,dischargingthecapacitorandresettingthedosimeter.

12


Removetheresettool.Replacetheinsulator,insertanewbatteryandattempttopowerup
thedevice.Theremaybeerrormessagesthatrequireadditionalhardwaretoclear.
13

GolossaryofTerms

AutonomousMode–TheDMCiscapableofbeingturnedonandoffthroughtheuseofa
pushbutton,alsocalled‘StandAloneMode.’
BatteryTool–StainlesssteeltoolavailablefromMirionTechnologiesforremovingthebattery
coverontheDMC2000.MirionpartnumberD20‐2005.Pictured:

ChirpRate–SettingthatcausesthespeakerontheDMCtooccasionally“chirp”everytimeit
readsasetamountofradiation.Defaultturnedoff,canbeadjustedwithsoftwareandreader.
Dose–ThetotalamountofradiationmeasuredbytheDMCwhileinRunMode.Displayedin
mremormSv.
DoseAlarmThreshold–ThedosesetpointatwhichtheDMCwillbegintoalarm.Thedose
alarmwillcontinuepastthisuntiltheDMCisreset.
DoseRate–AmeasureoftheintensityofradiationbeingmeasuredbytheDMCinrunmode,
inrelationtotime.Displayedinmrem/hrormSv/hr,configuredatpurchaseorwithsoftware
andreader.
E2prom–TheinternalmemoryoftheDosimeter.
Histogram–AhistoryfilecreatedbytheDMCduringeachuse,notinginformationsuchas
dosereceived,alarmstriggered,andanyfaults.Savedtothee2prom.Readablewithsoftware
andreader.
ISOConnector–ThegoldpanelonthefrontoftheDMC,usedasaconnectorforsuch
peripheralsrangingfromaearphonetoatransmitter.
PauseMode–ADMCinPauseModeiseffectivelyoff,astheDMCisnotcurrentlymeasuringor
trackingdose.Unlessacustomdisplayisselected,thedisplayinthismodewillread:PAUSE.
EXT
14

RateAlarmThreshold–ThedoseratesetpointatwhichtheDMCwillbegintoalarm.Therate
alarmwilllastuntilthedoseratefallsbelowthethreshold,atwhichpointitwillcease.
Reader–Referstoanyhardwarereader(LDM220,LDM210,LDM101,LDM2000)available
fromMirionTechnologiesthatareusedtocommunicatewiththeDMC2000andaltersettings
and/orretrieveahistogram.
RunMode–Also‘Active’mode,theDMCinRunmodeisactivelymeasuringandtrackingdose
anddoserate.Thedisplayinthismodeshouldread:
SatelliteMode–TheDMCrequiressoftwareandareadertobeturnedonandoff,andto
accessorchangeparameters.

15

Notes
16

CustomerServiceRequestForm

ForProblemswithyourDMC2000,pleasecontactMirionTechnologiesforaReturnMaterials
Authorization(RMA)format770‐432‐2744.Pleasefilloutandattachthefollowing
informationtotheformbeforeshippinganyDMCsbackforevaluationorrepair.

Name:Email:

Phone:Company:

Address:



PleaselisttheSerialnumberofeachDMCthathasproblemsalongwithadescriptionofwhat
iswrongwithit:
Serial#DescriptionofProblem









17