FMUser CZH-05A V1.2 User manual

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PLLFMTransmitterUser'sGuide
Mode:CZH-05AV1.2
CAUTION: NEVERoperate thetransmitterwithoutconnectingasuitableantennaordummy50
Ohmloadtotheoutputotherwisethereisaseriousdangerofdestructionoftheoutputstageofthe
transmitter.
Donottouch the antenna afterinserting the power.
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Fmuser
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Contents
Introducing the FMTransmitter3
Technicaltarget3
PackageContents3
AboutElecskyProductsand Services3
HardwareBasics4
Installation Instruction 4
Using the FMTransmitter5
PowerOn/Off5
ImportantNotice 5
Troubleshooting 5
Appendix6
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Thankyou forpurchasing ourtransmitter,This stereo FMtransmittercan easilybuildawonderfulFMradiostation.This one
have a beautifulaluminumalloycover.
Wepresentsabrand new 500mWPLL FMStereo TransmitterforFMstereo broadcasting.builtinLCD displaywith blue
backlight,Builtinmicrocontrollerforfrequencycontroland display.BuiltinFMstereo transmitterIC with PLL
technology,surface-mount tech, reliableworking condition. the transmission frequency is highlystable. Compactdesign with
aluminumenclosure. transmission distance morethan300 meters (Inthelineofsight field,openland).This transmitter
is idealforall stereo audio broadcasting, MP3, PC, TV, wireless speakers, game device, etc.
The FMTransmitterwill not drift between stationsbecause ofouradvanced stereo PLL DigitalTunerTechnology.
The FMTransmitterusethe controlpanelbuttonsto controlthe frequencythat itbroadcastson soifthe powerislostand then
restored itwill beginbroadcasting backon that exactsamefrequency.This avoidsanyneed to reset the FM Transmitterback
to the frequencyyou originally wanted.
Weuseaswitchto turnthe transmitteron and off.Thisallowsthe transmitterto automaticallyturnback ifpowerwereto be
lost and then restored.
The FMTransmitteris designed to operate non-stop 24/7.
The higheryou place the antenna the fartheryou will transmit.
Complete easyto follow plug&playinstructionsare included plustipson getting the best distance possible.
Ifyou can matchagood antenna to the FMtransmitter,the effectwillbe better.The transmission range dependson many
factors.The true distanceisbased on the sensitivityofthe receiver,antennaofthe receiver,andthe building and other
obstructions, which are between the transmitterand receiver. And the distance will much more in countryside.
PackageContents
1xCZH-05AFMTransmitter
1x100~240VPowerSupply
1x3.5mm Audio Cable
1xRubberAntenna
Technical target
PowerOutput: 500mW ±20%(12VDC)
FMTransmitterFrequencies: 87-108Mhz
Tuning Step: 100Khz/0.1Mhz
PowerSupply: 9-12VDC (The current load ofpowersupplyshould over1A)
FrequencyResponse: 100 -15000Hz
Pre-emphasis: 50us
type ofmodulation: WFM
Tuning Design: Stable PLL Technology
Transmission Signal: FMStereo
maximumfrequencydeviation: 75KHz
Signalto Noise Ratio: >50dB
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parasitic amplitude modulation: <0.2%
Stereo Separation: >30dB
Distortion: < 0.5%
Operation Time: True 24/7
ambient temperature: 0~+50
Antenna Design: RubberAntenna
Antenna Connector: BNC type
Output Impedance: 50 ohm
Audio Input Connector: 3.5mmheadphone connector
Size ofTransmitterUnit: L:113mm,W:88mm, H:39mm
Weight ofTransmitterUnit: 150g
HardwareBasics
1、LCD DigitalDisplayforthe Radio Frequency
2、FrequencyUp and Down Button (To increase and decrease the radio frequency)
3、Jack forDC 9-12V(1A)
4、Audio input
5、Powerstandbyswitch
6、Antenna socket
Installation Instruction
Connect the Antenna to FMTransmitter.
Connect the FMTransmitterto AC Adapter, then plug AC adapterto poweroutlet.
* Note: When the Power supplyisconnected, the OFF”signal will be showon LCD Digital Display.
Connect the iPod, MP3 orCD Playerto FMTransmitterwith the audio cable.
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UsingtheFMTransmitter
1Press PowerButton to turnon the DigitalTransmitter.The LCD Digital Display showsthe pre-set radiofrequency
channel(Forexample, 98.0MHz).
2. Turnon yourradioand switchto FMchannel,adjustthe radiofrequencychannelto desired channel.Now theradiowill
output as “zzz”sound orradio music now.
3. Then adjustthe radiofrequencychannelofthe DigitalTransmitterto the sameradiofrequencychannelofthe radio. (For
example, ifthe radiofrequencychannelis set to 98.0MHzthen the FM Transmittershouldalsobe set to 98.0MHz). When the
radiofrequencychannelofthe DigitalTransmitterandthe radioaresame, the “zzz”sound will stop. Adjustthe volumeto
mediumleveliniPod oraudioplayer,and startplaying music.Now you will hearthe music playing fromthe mp3oraudio
playerwill output fromthe radio. Note:Ifvolumelevelfrommp3 oraudioplayerishigh,the musicoutputfromtheradiowill
sound distorted.
5. Adjust the volume inyourradio until the satisfactoryoutput is reached.
6. When interferenceoccurs,the musicfromradiowillnot sound clear.Inthiscase, pleaseswitchto different channels by
repeating Step 2 and 3 until the music sound qualityis clearagain.
Adjustment of RadioFrequencyChannels
1.Press PowerButton to turn on the FMTransmitter
2.Adjust the FMfrequencychannels: (Radio frequencychannels adjustment range is 87.0MHz~108.0MHz.)
3.Press FrequencyUp/DownButton to increase/decrease 0.1MHzradio frequencychannels on the Transmitter.
4.Press and holdthe FrequencyUp/DownButton tocontinuouslyincrease/decreaseradiofrequencychannels on the
Transmitter.
PowerOn/Off and Power
Press PowerButton turn off the FMTransmitter.
Important Notice
This product should be keptin drycondition and awayfromwater.
Keep the product offdirectsunlight orhigh temperatureenvironment.
Please unplug the powerplug when it is not in use.
Troubleshooting
1)Ifthe FMTransmitterdoesnot function normally,
Pleasecheck whetherallwires/ cablesbeing connected tight and correct.
Ifthe productcannot be powered on, check whetherthe AC adapterworks and connectsproperly.
2)Ifmusic output fromthe radio is distorted (not clear),
First, reducevolumefromiPod oraudioplayerto mediumorlowervolumerange, and then turnup volumefromradioto
desired level. The music sound qualityshould improve.
Ifthe perviousmethod doesnot improvethe music sound quality,itmeanstheproblemmaybe due to frequency
interference. Then you need to switch to otherchannel.
3)Ifthe volume output fromthe radio is too loud when theFMTransmitteris not being in use,
When FMTransmitteris inused, desired volumeoutput levelfromthe radiois typicallyhigherthan withoutusing FM
Transmitter.Toprevent the volumeoutput too loud when the FMTransmitteris not being inuse, you can decreasethe radio
volume and increase the iPod oraudio playervolume aslong asthe sound fromthe radio remainsclear.
4)Ifmusic output fromthe radio have current acoustic interference,
Tryto change the location ofthe transmitter,orchange the location ofthe powersupply,orchange the location ofthe
audio line. Powersupplymust be awayfromthe transmitterat work.
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Appendix
Transmittercovering Distance Reference:kilometer）:
Receive sensitivity
0.2uV/12dB
Transmit power
0.1～0.5W
Transmit power
1～2W
Transmit power
3～5W
Transmit power
10～30W
Transmit power
30～50W
City 0.1～0.5 0.5～1 1～2 3～5 5～8
Town 0.2～0.6 1～2 2～3 5～8 8～10
Environs 0.3～1 2～3 3～5 8～15 10～30
Widen Plain 0.5～2 3～5 8～20 10～30 20～40
Sea communication 1～3 5～15 10～30 20～40 20～50
★Onlyforreference, also the covering distance isconcern with the antenna and environment.
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