User Manual

Theoutputlimitswitchfortheearphone(10)allowstheusertoengageoutput
limiting.Becausetheearphonevolumeoutputcanbeextremelyloudwhileinthe
unlimitedmode,propervolumesetupandmanagementisveryimportant.Itis
recommendedtosetupthesystemusingthelimitmode.
7.OutputLimitSwitchForEarphone
Thesquelchcontrol(7)requiresasmallscrewdrivertoadjust.Turningthecontrol
clockwisewillreducetheeffectivereceptiondistance,butwillalsolesseninterference
noise.Conversely,turningthecontrolcounterclockwisewillincreasetheeffective
receptiondistance,butitwillalsoincreasepossibilityofinterference.Hence,properon-
siteadjustmentandsetupisrequiredforoptimumperformance.
8.SquelchControl
WhentheRFIndicator(4)glows,itisindicatingthatsignalsfromtransmitterare
beingreceived.However,interferencesignalsonthesamefrequencywillalsocause
theindicator(4)toglow.Toeliminateinterference,youshouldswitchtoaninterference-
freechannel.
9.RFSignalLEDIndicator
untilreleased.
Afterholdingthechanneladjustor8for2seconds,thenumericLEDpanel
7willstartflashingandtheadjustorcanbereleased.Then,pushingtheadjustor
oncewillincreasethechannelnumber.Whenthesystemreacheschannel16,itwill
cyclebacktochannel1andstartthechannelselectionsequenceagain.WhiletheLED
isflashing,holdingthechanneladjustor8for2secondswillincreasethechannel
numberautomatically
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5.SettingUpTheReceiverChannel(SeeIllustrationBelow)
Note:
Toprotectyourhearing,itisrecommendedtosettheoutputlimittothe"ON"
position.Itisalsorecommendedthatyouremoveyourearphoneafterusingitforalong
periodoftimetoavoidpermanenthearingdegradation.
Thestereo/monoswitch9allowstheuseofearphoneswitheitherastereoor
monooutput.Thetransmittermustbesetatstereotransmission,ifastereooutputis
required.
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6.Stereo/MonoSwitch:
OFF
POWERON EARPHONERF
MAX
POWER HEADPHONE VOLUME
LIM
-12
-20
-30
-40
SOURCE
+
-
L R
IEM-707TStereoTransmitter
DCIN(15~18V)L R
LOOPOUT
AFIN(L) AFIN(R)
ANTENNA
OUTPUT1
OUTPUT2
MONO STEREO
CHANNELMODE
SQ LIMIT
MONOFF STON
CHANNELMODE
Note:
Ifinterferenceisnoticed,squelchadjustmentscanbemadewiththeaidofthered
LED.
TheMI-808Rreceiverusestruediversitydesign.Thereisonereceivingantenna
(12)oneachside.Toensureoptimalperformance,DONOTshortenortanglethe
antennas.Also,pleasemakesurethatthereisnomaterialneartheantennasthatis
conductiveorthatmightinterferewithreception.
10.RFReceivingAntennas
Thebalancecontrol(5)adjuststhevolumebalanceofearphonebetweentheleft
channelandtherightchannel.Thebalancecontrolshouldbesetinthecentreposition
foranevenlybalancedoutput.Whenturnedclockwise,thevolumeoftherightchannel
remainsunchangedwhilevolumeofleftchanneldecreases.Whenturning
counterclockwise,thesituationisreversed.Wheninthecentreposition,thevolume
levelisevenlybalancedbetweentheleftandrightchannels.
11.BalanceControl
SQ SQLIMIT LIMIT
MON MONOFF OFFST STON ON
CHANNEL CHANNELMODE MODE
Holdbuttonfor2seconds
FlashingLED
Continuetoholdbutton
Numbercontinuetoadd
upintheintervalof1.
6
7
StereoReceiver
StereoReceiver
Note:
Wheninstereomode,thereceiverexhibitsarichersoundquality,butwithalower
S/Nratio.Wheninmonomode,theS/Nrationishigherthanstereomode.Thisiswhy
someusersfeelthatmonomodehasalongerreceivingdistancethanstereomode.