Camel RF Electronic CZH-T251 User manual

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RF
RF
RF ELECTRONIC
ELECTRONIC
ELECTRONIC
ELECTRONIC TECHNOLOGY
TECHNOLOGY
TECHNOLOGY
TECHNOLOGY CO.,
CO.,
CO.,
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CZH-T251
CZH-T251
CZH-T251
CZH-T251 User
User
User
User Manual
Manual
Manual
Manual
1.
1.
1.
1. Attention
Attention
Attention
Attention before
before
before
before use:
use:
use:
use:
1)
1)
1)
1) Make
Make
Make
Make sure
sure
sure
sure the
the
the
the supplied
supplied
supplied
supplied voltage
voltage
voltage
voltage is
is
is
is within
within
within
within the
the
the
the acceptable
acceptable
acceptable
acceptable range.
range.
range.
range.
2)
2)
2)
2) Only
Only
Only
Only professionals
professionals
professionals
professionals can
can
can
can do
do
do
do the
the
the
the maintenance.
maintenance.
maintenance.
maintenance.
3)
3)
3)
3) Please
Please
Please
Please make
make
make
make sure
sure
sure
sure the
the
the
the antenna
antenna
antenna
antenna has
has
has
has lightening
lightening
lightening
lightening protection.
protection.
protection.
protection.
4)
4)
4)
4) Please
Please
Please
Please don
don
don
don ’
’
’
’ t
t
t
t touch
touch
touch
touch the
the
the
the antenna
antenna
antenna
antenna when
when
when
when the
the
the
the machine
machine
machine
machine is
is
is
is connected
connected
connected
connected with
with
with
with power
power
power
power supply.
supply.
supply.
supply.
5)
5)
5)
5) Please
Please
Please
Please don
don
don
don ’
’
’
’ t
t
t
t power
power
power
power on
on
on
on the
the
the
the machine
machine
machine
machine without
without
without
without connecting
connecting
connecting
connecting antenna.
antenna.
antenna.
antenna.
6)
6)
6)
6) Please
Please
Please
Please don't
don't
don't
don't use
use
use
use the
the
the
the transmitter
transmitter
transmitter
transmitter in
in
in
in explosive
explosive
explosive
explosive environment(e.g.
environment(e.g.
environment(e.g.
environment(e.g. gas
gas
gas
gas station,
station,
station,
station, places
places
places
places with
with
with
with gas
gas
gas
gas or
or
or
or steam)
steam)
steam)
steam)
7)
7)
7)
7) Please
Please
Please
Please don
don
don
don ’
’
’
’ t
t
t
t use
use
use
use the
the
the
the transmitter
transmitter
transmitter
transmitter in
in
in
in extreme
extreme
extreme
extreme dusty,
dusty,
dusty,
dusty, damp,
damp,
damp,
damp, hot
hot
hot
hot environment.
environment.
environment.
environment.
8)
8)
8)
8) Please
Please
Please
Please use
use
use
use the
the
the
the transmitter
transmitter
transmitter
transmitter under
under
under
under the
the
the
the regulations
regulations
regulations
regulations by
by
by
by local
local
local
local wireless
wireless
wireless
wireless administration
administration
administration
administration institutions.
institutions.
institutions.
institutions.
2.
2.
2.
2. Menu
Menu
Menu
Menu
1)
1)
1)
1) Product
Product
Product
Product features
features
features
features
2)
2)
2)
2) Product
Product
Product
Product configuration
configuration
configuration
configuration
3)
3)
3)
3) Product
Product
Product
Product user
user
user
user guide
guide
guide
guide
4)
4)
4)
4) Product
Product
Product
Product specification
specification
specification
specification
5)
5)
5)
5) Troubleshoot
Troubleshoot
Troubleshoot
Troubleshoot
3.
3.
3.
3. Product
Product
Product
Product Features
Features
Features
Features
CZH-T
CZH-T
CZH-T
CZH-T 251
251
251
251 is
is
is
is a
a
a
a multi-functional
multi-functional
multi-functional
multi-functional FM
FM
FM
FM transmitter.
transmitter.
transmitter.
transmitter. It
It
It
It has
has
has
has stable
stable
stable
stable structure,
structure,
structure,
structure, excellent
excellent
excellent
excellent performance
performance
performance
performance ,
,
,
, super
super
super
super good
good
good
good
sound
sound
sound
sound quality
quality
quality
quality and
and
and
and is
is
is
is very
very
very
very easy
easy
easy
easy to
to
to
to use.
use.
use.
use.
*
*
*
* Main
Main
Main
Main Features:
Features:
Features:
Features:
-Stereo/Mono
-Stereo/Mono
-Stereo/Mono
-Stereo/Mono optional
optional
optional
optional
-
-
-
- RF
RF
RF
RF output
output
output
output power
power
power
power is
is
is
is continuously
continuously
continuously
continuously adjustable
adjustable
adjustable
adjustable from
from
from
from 0~
0~
0~
0~ 25
25
25
25 watt.
watt.
watt.
watt.
-One
-One
-One
-One button
button
button
button controls
controls
controls
controls all
all
all
all functions.
functions.
functions.
functions.
-SWR
-SWR
-SWR
-SWR protection.
protection.
protection.
protection. When
When
When
When antenna
antenna
antenna
antenna is
is
is
is not
not
not
not well
well
well
well connected,
connected,
connected,
connected, the
the
the
the transmitter
transmitter
transmitter
transmitter will
will
will
will turn
turn
turn
turn to
to
to
to
protection
protection
protection
protection mode
mode
mode
mode automatically.
automatically.
automatically.
automatically.
-Temperature
-Temperature
-Temperature
-Temperature protection.
protection.
protection.
protection. When
When
When
When the
the
the
the temperature
temperature
temperature
temperature of
of
of
of transmitter
transmitter
transmitter
transmitter is
is
is
is too
too
too
too high,
high,
high,
high, it
it
it
it will
will
will
will turn
turn
turn
turn to
to
to
to
protection
protection
protection
protection mode
mode
mode
mode automatically.
automatically.
automatically.
automatically.
4.
4.
4.
4. Product
Product
Product
Product configuration
configuration
configuration
configuration
NO
NO
NO
NO NAME
NAME
NAME
NAME DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION QTY
QTY
QTY
QTY UNIT
UNIT
UNIT
UNIT PORT
PORT
PORT
PORT
1
1
1
1
FM transmitter
CZH-T251 1 PCS NO
2
2
2
2
ALLUMINUM
ANTENNA
1/4 OR 1/2 WAVE
1 SET RF OUT
3
3
3
3POWER ADAPTER DC12V/6A 1 SET 12.0V-6.0A

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4
4
4
4AUDIO CABLE
1 TO 2 - 3.5m TO RCA
1 PCS LINE IN
5
5
5
5
USER MANUAL ELECTRONIC VERSION
1 PCS NO
5.
5.
5.
5. User
User
User
User Guide
Guide
Guide
Guide
1)
1)
1)
1) Front
Front
Front
Front and
and
and
and Back
Back
Back
Back Panel
Panel
Panel
Panel description
description
description
description
Front
Front
Front
Front Panel
Panel
Panel
Panel
Back
Back
Back
Back Panel
Panel
Panel
Panel

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ELECTRONIC TECHNOLOGY
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TECHNOLOGY
TECHNOLOGY CO.,
CO.,
CO.,
CO., LTD
LTD
LTD
LTD .
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2)
2)
2)
2) Knob
Knob
Knob
Knob description
description
description
description
Action
Action
Action
Action Definition
Definition
Definition
Definition Description
Description
Description
Description
Turn
left/right
Adjust, shift
Main page, adjusting page, shift （turn
clockwise to increase, turn
Counterclockwise to reduce ）
Short press Confirm Enter/Exit Menu page
Press and
hold
Confirm On Main page, press and hold to enter M enu
3)
3)
3)
3)
Operation
Operation
Operation
Operation Instruction
Instruction
Instruction
Instruction
a)
a)
a)
a) Turn
Turn
Turn
Turn ON
ON
ON
ON
Check the antenna first, make sure it ’ s well connected. Then connect the power cord
to home socket, press the power button to I position to turn ON the transmitter.
O position means OFF. See picture on the right.
After power on, the transmitter goes into working status.
�Real-time working frequency ：
�Real-time internal working temperature ：
�RF output power
：
�SWR ：
�Sound Mode
：means Stereo ，means Mono
�Line-in Volume ：, the range is 0~79
�Microphone Volume ：, the range is 0~79
b) Function and Parameter setting
Press the knob to enter Menu page. Turn the knob to shi f t pages. There are 9 pages altogether rotating on
the screen .

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TECHNOLOGY CO.,
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CO.,
CO., LTD
LTD
LTD
LTD .
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�
�
�
�Frequency
Frequency
Frequency
Frequency setting
setting
setting
setting
On the Menu page, turn the knob to page 1 FERQ setting, press the knob to enter
setting (the RF output will be shut down temporarily) . Turn the knob to adjust the frequency
by stepping of 0.1MHz, then press the knob to confirm setting and exit.
�
�
�
�Line-in
Line-in
Line-in
Line-in Volume
Volume
Volume
Volume setting
setting
setting
setting
On the Menu page, turn the knob to page 2 LINE VOLUME setting, press the knob to
enter setting. Turn the knob to adjust the volume within the range of 0~79, then press the
knob to confirm setting and exit.

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ELECTRONIC TECHNOLOGY
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TECHNOLOGY
TECHNOLOGY CO.,
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CO.,
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LTD .
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�MIC
MIC
MIC
MIC volume
volume
volume
volume setting
setting
setting
setting
On the Menu page, turn the knob to page 3 MIC VOLUME setting, press the knob to enter
setting. Turn the knob to adjust the microphone volume within the range of 0~79, then press
the knob to confirm setting and exit.
�
�
�
�RF
RF
RF
RF output
output
output
output power
power
power
power setting
setting
setting
setting
On the Menu page, turn the knob to page 4 RF POWER setting, press the knob to enter
setting. Turn the knob to adjust the output power within the range of 0~50w, then press the
knob to confirm setting and exit.
�Sound
Sound
Sound
Sound mode
mode
mode
mode setting
setting
setting
setting
On the Menu page, turn the knob to page 5 ST<OR>MO setting, press the knob to enter
setting. Turn the knob to shift the sound mode between Stereo and Mono, then press the
knob to confirm setting and exit.
�
�
�
�Temperature
Temperature
Temperature
Temperature Protection
Protection
Protection
Protection Setting
Setting
Setting
Setting
On the Menu page, turn the knob to page 6 TEMP setting, press the knob to enter setting.
Turn the knob to adjust the protection temperature point within the range of 3 0~ 8 0 ℃, then
press the knob to confirm setting and exit.
�
�
�
�SWR
SWR
SWR
SWR protection
protection
protection
protection setting
setting
setting
setting
On the Menu page, turn the knob to page 7 SWR SET setting, press the knob to enter
setting. Turn the knob to adjust the SWR protection point within the range of 1 .0~5 .0 , then

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press the knob to confirm setting and exit.
�
�
�
�Line
Line
Line
Line Mute
Mute
Mute
Mute setting
setting
setting
setting
On the Menu page, turn the knob to page 8 MUTE setting, press the knob to enter setting.
Turn the knob to set Mute status, ON means the line-in is muted, OFF means the line-in is
available. P ress the knob to confirm setting and exit.
�
�
�
�Exit
Exit
Exit
Exit setting
setting
setting
setting
On the Menu page, turn the knob to page 9 MENU EXIT, press the knob to exit setting
and return to main page.
Remark: In the MENU page, if there is no action within 20 seconds, the system will return
to Main page automatically.
6.
6.
6.
6. Technical
Technical
Technical
Technical Specificatio
Specificatio
Specificatio
Specificatio n
n
n
n
NO Item Specification
1
Working Voltage
12V
2
Working Current
﹤5A
3
Frequency Range
87~108MHz
4
Frequency Stability
±10PPM
5
Frequency Stepping
100KHz
6
Environment temperature
-10 ℃ ~45 ℃
7
Output Impedance
50 Ω
8
RF output power
0W~25W

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9
Harmonic, clutter radiation
≤ － 60dB
10
Audio distortion
0.2%
11
Frequency Response
50Hz~15000Hz
12
Separation
≥35 dB
13
Input level
≤15 dB V
14
Frequency Modulation
±75KHZ
15
SNR
≥70 dB
16
Size
210 ㎜ （ L ） *174 ㎜ （ W ） *59 ㎜ （ H ）
（ Exclude projected parts ）
17
Net Weight
A bout 1.5kg
7.
7.
7.
7. Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
NO
NO
NO
NO Problem
Problem
Problem
Problem description
description
description
description Possible
Possible
Possible
Possible Reasons
Reasons
Reasons
Reasons
1
1
1
1Unable to Power ON
1）Socket is not connected with electricity
2）Power cord is not well plugged.
3）The fuse is not working properly in socket.
2
2
2
2SWR Alarm
1
）
Antenna is not well connected.
2
）
SWR value is too high because antenna doesn ’ t
match transmitter
3) There are too many reflecting objects close to
antenna.
3
3
3
3Temperature Alarm
1）Fan is not working ；
2）Antenna doesn't match transmitter, the SWR
value is too high, thus temperature rises up.
3）The fan holes are jammed.
4
4
4
4SWR value is too high
1）Antenna not well connected.
2）SWR value is too high because antenna doesn ’ t
match transmitter
3) There are too many reflecting objects close to
antenna.
5
5
5
5
Short transmitting
distance
1）High loss of feeder cable.
2）Poor broadcasting environment.
3）Output power is low.
4）Antenna is not placed high enough.
5）Antenna and transmitter doesn ’ t match.
6）Radio receiver has low sensitivity.

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ELECTRONIC TECHNOLOGY
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TECHNOLOGY CO.,
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CO.,
CO., LTD
LTD
LTD
LTD .
.
.
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6
6
6
6No power output
1) RF output power needs to be adjust higher
2) Transmitter is powered OFF.
7
7
7
7No audio output
1）Transmitter line-in volume is too low.
2）Line-in audio signal is abnormal.
8
8
8
8No microphone output
1）Microphone is not working well.
2）Microphone volume is too low.
3）Microphone is dynamic type.
4）Microphone is not well plugged.
9
9
9
9Poor sound quality
1）Microphone quality is low.
2）Audio source quality is low.
3）Antenna is not well assembled and connected.
4）Audio signal or transmitter line-in volume is
not adjusted well.