FMUser CZH-10A User manual

Contact: Rita Cai Email: [e-mail] Skype: rita.cai87 Website: www.fmuser.net
CZH-10A 10w FM Transmitter User Manual
Date: 2010-11-4
Version ：V1.0
Product Introduction:
CZH-10A is a stereo fm transmitter covering the entire FM band from 87~108mhz. The power
output is 0~10w, power adjustable from 0~10w by 99 steps. It is widely used in campus, community,
office and other public places, it is a perfect choice for the FM amateurs.
Outstanding Features:
lStrong power output, maximum could reach over 10w.
lPower adjustable, from 0~10w by 99steps.

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lPLL technology
lpilot system for stereo coding
lAll touch mode buttons
lChinese/ English, bilingual option
lAluminum casing
lExcellent ventilating system
For operation instruction, please check more information below:
Accessories
Name Quantity Remark
CZH-10A fm transmitter 1 Regular accessory
Power adapter 1 Regular accessory
Audio cable 1 Regular accessory
FM antenna 1 Optional accessory
Antenna connector 1 Optional accessory
GP-1 antenna 1 Optional accessory
GP-2 antenna 1 Optional accessory
Vehicle mobile antenna 1 Optional accessory

Contact: Rita Cai Email: [e-mail] Skype: rita.cai87 Website: www.fmuser.net
CZH-10A
Introduction of ports:

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Installation:
lAntenna should be fixed in an open and high place, make sure there is lightening protection.
lConnect the antenna cable to port #7 of the transmitter (antenna interface N base). Make sure
the interface is well connected to the transmitter.
lInsert the plug(DC2.5mm) of power adapter to port #6 of the transmitter(power interface)
lPlug the 3.5mm audio cable to port#2 of the transmitter, the other end connecting audio

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source.
lMicrophone Interface）。If it’s needed, you can choose MIC, the plug of which is 3.5mm the
same as audio cable. Plug it to Port#1. Attention: MIC could only be Electret MIC，which is
exactly the MIC used for online chatting, it doesn’t support other mic such as moving coil type.
lInstallation DONE.
Switch ON/OFF the transmitter:
lAfter installation of the ports, check it again, make sure everything is ok, then connect the
power. Attention: Before switching on the machine, make sure the antenna is connected to
the transmitter. If it’s possible, please test the antenna standing wave, choose a frequency
point with the smallest VSWR, then don’t adjust the frequency randomly, because the
antenna could be seriously affected by the change of frequency, which will cause big stand
waves. The power amplifier tube could be burned because of this.
lAfter switching on the transmitter, LCD shows “systems boosting”, wait for 2 seconds until you
heard “Di” sound, this means the self-check of the system is done. LCD then shows ”system
standby”. Now press power button #5, the system will go into working mode. See picture
below:
lSwitching ON the transmitter-DONE.
lPress button #5, system will go to the Power OFF interface. LCD shows “system standby”.

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Menu setting:
No Name Description
1 Frequency Setting Frequency range 87~108MHz
2 Volume setting Adjust the external audio volume, to ensure the transmitter in the
best status of modulation frequency. 0~79 steps adjustable.
3 MIC setting Adjust the volume of external MIC, to ensure the transmitter in the
best status of modulation deviation. 0~79 steps adjustable.
4 Power setting Set the output power, 0~10w adjustable by 99 steps.
5 Language setting Optional: Chinese, English
6 Exit Exit to home screen
Parameter setting:
lFrequency setting:
Press button #5 for 2 seconds, system goes into menu setting. Press #1 or #2 to enter the
setting page:
Press #5 to confirm, see picture below:
Press #1 or #2 to set the working frequency, then press #5 to confirm. Exit to the menu page,

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frequency setting finished.
lVolume setting:
In the menu setting page, press #1 or #2 to the options:
Press #5 to confirm, see picture below:
Press #1 or #2 to set the volume, then press #5 to confirm. Exit to menu page, volume setting
finished.
lMIC setting:
In Menu page, press #1 or #2 to Menu option 3:
Press #5 to confirm, see picture below:
Press #1 or #2 to set the volume, then press #5 to confirm. Exit to menu page, MIC volume

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setting finished.
lOutput RF power setting:
In the menu page, press #1 or #2 to Menu option 4: