Guangzhou Chuanzhou Electronic Technology CZH-10A User manual

Guangzhou Chuanzhou Electronic Technology Co., Ltd
S
MANUAL OF CZH-10A
Introduction:
CZH-10Ais a small section of 87~108MHz full stereo FM transmitter.
The RF output ranges from 0w to 10w. It can be widely used in
campus, community, office and some other small offices. And it is also
an ideal FM broadcasting transmitter for personal hobbies.
Main Features about this machine as following:
1.Strong output power, maximum output power more than 10W.
2.Adjustable output power from 0W to 10W, sub 99 available.
3.PLL frequency synthesizer.
4.Pilot system for stereo coding.

5.Full soft touch press keys.
6.Chinese/English dual-language optional.
7.Aluminum enclosed classic design.
8.Good cooling system.
*To know more about this machine, please read this manual
carefully.

Warning:
“Radio Regulation of the P.R.C”states: the user of
radio transmission equipment units and for all,must
go to the appropriate authority bid for the radio
station setting up procedure to obtain a station
license before using.
Accessories Introduction:
accessory name
quantity
remark
CZH-10A FM
transmitter
General
1
Conventional
PowerAdapter
1
Conventional
Audio Cable
1
Conventional
Spiral Antenna
1
Optional
Antenna Adapter
1
Optional
GP-1 Antenna
1
Optional
GP-2 Antenna
1
Optional
Car Suction Cup
Antenna
1
Optional
CZH-10AA/C Adapter
Connector Introduction:

1.Microphone Connector: (3.5mm)Microphone Interface
2.Audio Input Connector R/L Line Input
3.Plus Key“+”Up
4.Minus Key “-”Down
5.Menu Key(including “open/close”button and “OK”
button)
6.Power Input Connector: Power Interface
7.Antenna Connector(N block): Antenna Interface
Installation:
1.Antenna install into commanding height in the open high
environment, and make a lighting protection measures.
2.Feeder connected to the connector 7(antenna connector N
block antenna interface), note that the transmitter a good
bonding side.
3.DC power adapter (DC 2.1) insert into connector 6 of

CZH-10A. (input power interface).
4.3.5mm plug for two-channel audio cable insert into the
connector 2 of CZH-10A, (R/L Line input), the other side
connect to the appropriate source.
5.If necessary, you can choose to use MIC. They are the
same plug between MIC and audio cable, also 3.5mm
standard. Insert the plug into connector 1(Microphone
connector, Microphone Interface). Note: MIC can only be
electrets MIC, which is the kind of computer voice chatting
generic MIC. Do not support other types, such as
moving-coil microphone installed.
6.Installation finished.
Turn on/off
After installation, check it again carefully then you can
switch on the power. Note: You’d better test the antenna
VSWR before you turn on the machine and make sure it is a
good antenna. Select a standing wave ratio of the minimum
frequency, don’t adjust the frequency any more once you
confirm the frequency. Because as frequency changed, the
antenna will be in a mismatch state. And once the standing
wave is too big, it will burn out the power amplifier if

serious.
After switch on the power, LCD display “system is starting
up”, then wait a second, you hear a “beep”sound, means
device passed self-tested. LCD display “system standby”,
then you press button 5, system into a normal working state.
LCD display as the following picture show:
Boot completed.
Short-press the on/off button 5 into the shut down state,
LCD displays “system standby”.
Menu List:
NO.
name
description
1
Frequency setting
Set device working frequency,
range from 87~108MHz.
2
Volume setting
Adjust the volume of external
audio, make the transmitter
modulation frequency deviation
at its best. 0~79 adjustable.
3
Microphone setting
Adjust the volume of external

audio, make the transmitter
modulation frequency deviation
at its best. 0~79 adjustable.
4
Power setting
Set the output power of the
device. 99 levels adjustable
range from 0watt to 9watt
5
Language setting
Chinese and English display
optional
6
Exit
Return to the main interface
Parameter Settings
Frequency setting:
Hold down menu button 5 for two seconds into menu setting
interface. By pressing the plus button “+”or minus button
“-”to set frequency, directly display menu 1 shown as below:
Press Enter button 5 to confirm the selection, display as
below:

Press the plus button 3 “+”or the minus button “-”to set the
desired operating frequency, then press the enter button 5 to
confirm and return to the setting menu interface. Frequency
setting finished.
Volume Setting:
In the menu interface, press the plus button “+”or the
minus button “-”to adjust to the menu option 2.
Press the enter button 5 to confirm selection, display as
below:
Press the plus button 1 “+”or the minus button “-”to set the
desired volume, then press the enter button to confirm and
return to the menu interface. Volume setting finished.
Microphone setting:
In the menu interface, press the plus button 1 “+”or the
minus button 2 “-”adjust to the menu option 3:

Press the enter button 5 to confirm selection, display as
below:
Press the plus button 1 “+”or the minus button “-”to set the
desired volume, then press the enter button 5 to confirm,
return to menu interface. Volume setting finished.
RF output power setting:
In the menu interface, press the plus button 1 “+”or the
minus button 2 “-”adjust to menu option 4:
Press the enter button 5 to confirm selection, display as
below:
Press the plus button 1 “+”or the minus button 2 “-”to set

the desired power, the press the enter button 5 to confirm.
Return to menu interface. The power setting finished. (The
power parameter range from 0 to 99 only means the power
gears, not the exact output power.)
Language Selection:
In the menu interface, press the plus button 1 “+”or the
minus button 2 “-”adjust to menu option 5.
Press the enter button 5 to confirm selection, display as
shown:
Press the plus button 1 “+”and the minus button 2 “-”to set
the desired language, then press the enter button 5 to
confirm, return to menu interface. Language setting
finished.
Return to main interface:
In the menu interface, press the plus button “+”or the

minus button “-”adjust to menu option 6, then press the
button 5 to confirm selection.
Electric Parameter:
Nominal Voltage: 11~13V DC
Operating Current: <2.5A
Frequency Range: 87~108MHz
Frequency Stepping: 100KHz
Output Power:0~10 Watt adjustable
Output Impedance: 50Ωcoaxial
Modulation System: WFM
Frequency deviation: ±75KHz
Parasitic Amplitude Modulation: <0.25%
Stray Radiation: <60db
Harmonic Radiation: <60db
Frequency Level: 15dbV

Frequency Response: 50~15KHz
Signal to Noise Ratio: 70db
Degree of Separation: 40db
Ambient Temperature: 0~45℃
Dimension of Complete Machine: 155mm（L）*120mm（W）
*46mm（H）
Net Weight: 0.5KG