CZH-T251 User Manual
Contents
1. Microphone Volume M60 the range is 0 9 3 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 b Function and Parameter setting Press the knob to enter Menu page Turn the knob to shift pages There are 9 pages altogether rotating on the screen 1 MENU 2 MENU FREQUENCY SET AUDIO VOLUME 3 MENU 4 MENU MIC VOLUME RF POWER SET 5 MENU 6 MENU STEREO OR MONO TEMP SET F MENU 8 MENU SWR SET MUTE 9 MENU EXIT Frequency 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 1M Hz then press the knob to confirm setting and exit FREQ 93 30MHz Line in Volume 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 4 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 AUDIO VOLUME 61 MIC volume setting On the Menu page turn the knob to page3 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 MIC VOLUME 60 RF output power setting On the Menu page turn the knob to page 4 RF POWER setting press the knob to2. feeder cable 2 Poor broadcasting environment 30 Output power is low 4 Antenna is not placed high enough 5 Antenna and transmitter doesn t match 6 Radio receiver has low sensitivity 1 RF output power needs to be adjust higher 2 Transmitter is powered OFF 1 Transmitter line in volume is too low 2 Line in audio signal is abnormal 1 Microphone is not working well 2 Microphone volume is too low 30 Microphone is dynamic type 41 Microphone is not well plugged 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
3. Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 CZH 1251 User M anual 1 Attention before use 1 Sa es 2 M 1 e W N 5 M ake sure the supplied voltage is within the acceptable range Only professionals can do the maintenance Please make sure the antenna has lightening protection Please don t touch the antenna when the machine is connected with power supply Please don t power on the machine without connecting antenna Please don t use the transmitter in explosive environment e g gas station places with gas or steam Please don t use the transmitter in extreme dusty damp hot environment Please use the transmitter under the regulations by local wireless administration institutions enu Product features Product configuration Product user guide Product specification Troubleshoot 3 Product Features CZH T251 isa multi functional FM transmitter It has stable structure excellent performance super good SO M und quality and is very easy to use ain Features Stereo M ono optional RF output power is continuously adjustable from 0 25watt One button controls all functions SWR protection When antenna is not well connected the transmitter will turn to protection mode automatically Temperature protection When the temperature of transmitter is too high it will turn to protection mode automatically 4 Product configuration NO NAME DESCRIP
4. TION UNIT PORT ALLUM INUM 2 1 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 POWER ADAPTER DC12V 6A 12 0V 6 0A AUDIO CABLE 1 TO 2 3 5m TO RCA LINE IN 5 USERMANUAL ELECTRONICVERSION 1 CS no 5 User Guide 1 Front and Back Panel description Front Panel F CZH T251 Screen Display Adjusting Knob Back Panel RF Output Power Switch P D RS232 Microphone line in Port Communication Power supply Input port plug Cooling holes 2 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 2 Knob description Main page adjusting page shift turn I Adjust shift clockwise to i left right PUSH SET increase turn Counterclockwise to reduce Short press Enter Exit Menu page Press and On Main page press and hold to enter M enu Operation Instruction 3 a Turn ON Check the antenna first make sure it s well connected Then connect the power cord to home socket press the power button to position to turn ON the transmitter O position means OFF See picture on the right After power on the transmitter goes into working status FM93 3MHz M61 M60 PO 25 1W SWR 1 0 41C Real time working frequency FM93 3 MHz Real time internal working temperatureg 41 C RF output power PO 25 1W swear SWR 1 0 Sound M odef ne means Stereo means Mono Line in Volume MM 61 the range is 0 79
5. 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 POWER SET DET 25 1W SET 25 0W Sound mode setting On the Menu page turn the knob to page 5 ST lt OR gt 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 ST lt OR gt MO STEREO ha Temperature Protection Setting On the M enu 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 30 80 C then press the knob to confirm setting and exit TEMP SET 65 C 5 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 SWR protection 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 press the knob to confirm setting and exit SWR SET 3 0 PO 25 1W REF 00 0W Line Mute 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 Press the knob to confirm setting and exit MUTE OFF Exit setting On the Menu page turn the knob to page 9 MENU EXIT press the knob to exit setting and return to main pa
6. ge 9 MENU EXIT Remark In the M ENU page if there is no action within 20 seconds the system will return to Main page automatically 6 Technical Specification Working Voltage Working Current 5A Frequency Range 87 108M Hz oa Frequency Stability 10PPM 6 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Ts reas pee 5 eniomerionoue ace O a oumenm o emonsa a OOOO Exclude projected parts 7 Troubleshooting ono Problem description Possible Reasons 7 8 1 Socket is not connected with electricity Unable to Power ON 2 Power cord is not well plugged 30 The fuse is not working properly in socket 1 Antenna is not well connected Skype rita cai87 2 SWR value is too high because antenna doesn t SWR Alarm match transmitter 3 There are too many reflecting objects close to antenna 1 Fan is not working Temperature Alarm value is too high thus temperature rises up 30 The fan holes are jammed 1 Antenna not well connected 2 Antenna doesn t match transmitter the SWR 2 SWR value is too high because antenna doesn t SWR value is too high match transmitter 3 There are too many reflecting objects close to antenna 8 8 Contact Rita Cai Email rita fmuser net Website www fmuser net Skype rita cai87 Short transmitting distance No power output No audio output No microphone output Poor sound quality 10 High loss of
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